diff --git a/dev-shell.nix b/dev-shell.nix
index d23c062..69b54a4 100644
--- a/dev-shell.nix
+++ b/dev-shell.nix
@@ -4,17 +4,21 @@
 # Should also incorporate shortcuts like scripts/{hm-switch,conf-sysnix}.sh in here instead
 #
 # It should not contain PDE
-{pkgs? import <nixpkgs> {}
-,lib
-,...}: pkgs.mkShell {
+{ pkgs ? import <nixpkgs> { }
+, lib
+, ...
+}: pkgs.mkShell {
   # mkShell doesn't care about the differences across nativeBuildInputs,
   # buildInputs, or packages
   buildInputs = [
     # shell scripts
-    (lib.shellAsDrv {script = ''echo "hello world"''; pname = "hello";})
+    (lib.shellAsDrv { script = ''echo "hello world"''; pname = "hello"; })
+    # TODO: decompose hm-switch.sh with a base version (where HOME_MANAGER_BIN is injected)
+    # (lib.shellAsDrv {script = builtins.readFile ./scripts/hm-switch.sh; pname = "hm-switch";})
+    pkgs.rust4cargo
   ];
 
   # env vars
-  lol="hello world";
+  lol = "hello world";
 }
 
diff --git a/flake.lock b/flake.lock
index 6b10ce5..5dde60d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1665870395,
-        "narHash": "sha256-Tsbqb27LDNxOoPLh0gw2hIb6L/6Ow/6lIBvqcHzEKBI=",
+        "lastModified": 1673301561,
+        "narHash": "sha256-gRUWHbBAtMuPDJQXotoI8u6+3DGBIUZHkyQWpIv7WpM=",
         "owner": "ryantm",
         "repo": "agenix",
-        "rev": "a630400067c6d03c9b3e0455347dc8559db14288",
+        "rev": "42d371d861a227149dc9a7e03350c9ab8b8ddd68",
         "type": "github"
       },
       "original": {
@@ -36,6 +36,22 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1668681692,
+        "narHash": "sha256-Ht91NGdewz8IQLtWZ9LCeNXMSXHUss+9COoqu6JLmXU=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "009399224d5e398d03b22badca40a37ac85412a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "locked": {
         "lastModified": 1667395993,
@@ -53,11 +69,11 @@
     },
     "flake-utils_2": {
       "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
         "type": "github"
       },
       "original": {
@@ -81,6 +97,21 @@
         "type": "github"
       }
     },
+    "flake-utils_4": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -89,11 +120,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1672770368,
-        "narHash": "sha256-iO6Z9blIe8dcPh3VT2nkej9EimORCoskGQR6xNjICWI=",
+        "lastModified": 1673343300,
+        "narHash": "sha256-5Xdj6kpXYMie0MlnGwqK5FaMdsedxvyuakWtyKB3zaQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d01e7280ad7d13a5a0fae57355bd0dbfe5b81969",
+        "rev": "176e455371a8371586e8a3ff0d56ee9f3ca2324e",
         "type": "github"
       },
       "original": {
@@ -118,11 +149,75 @@
         "type": "github"
       }
     },
-    "nixgl": {
+    "neovim-flake": {
       "inputs": {
         "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "dir": "contrib",
+        "lastModified": 1673504032,
+        "narHash": "sha256-x4nv7g8+bQXg5PfkFw3vCcr3pYI0Hco0VoSbAy60xek=",
+        "owner": "neovim",
+        "repo": "neovim",
+        "rev": "143d3f1f3224bca02bfef7df0932b9d7524a3ff2",
+        "type": "github"
+      },
+      "original": {
+        "dir": "contrib",
+        "owner": "neovim",
+        "repo": "neovim",
+        "type": "github"
+      }
+    },
+    "neovim-nightly-overlay": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "neovim-flake": "neovim-flake",
         "nixpkgs": "nixpkgs"
       },
+      "locked": {
+        "lastModified": 1673511313,
+        "narHash": "sha256-QGUT3w1bHclVRqX958EPOd3OxR/R10MoV97N5jx/qbw=",
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "rev": "5af6fe31f9906e70a1e8985dbbdcc4ae66c7f82d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "type": "github"
+      }
+    },
+    "nix-index-database": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1673365945,
+        "narHash": "sha256-/duo8kCEbo62D5gn46m//jfvRtT56KS5dy+j6+Rl+4Y=",
+        "owner": "mic92",
+        "repo": "nix-index-database",
+        "rev": "0e51ff44d6bef0b6b2bbf9e34fdc029fc24820fc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mic92",
+        "repo": "nix-index-database",
+        "type": "github"
+      }
+    },
+    "nixgl": {
+      "inputs": {
+        "flake-utils": "flake-utils_3",
+        "nixpkgs": "nixpkgs_2"
+      },
       "locked": {
         "lastModified": 1,
         "narHash": "sha256-KP+2qdZlhmRkrafuuEofg7YnNdVmGV95ipvpuqmJneI=",
@@ -135,6 +230,22 @@
       }
     },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1671983799,
+        "narHash": "sha256-Z2Ro6hFPZHkBqkVXY5/aBUzxi5xizQGvuHQ9+T5B/ks=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "fad51abd42ca17a60fc1d4cb9382e2d79ae31836",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1660551188,
         "narHash": "sha256-a1LARMMYQ8DPx1BgoI/UN4bXe12hhZkCNqdxNi6uS0g=",
@@ -149,13 +260,13 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs_3": {
       "locked": {
-        "lastModified": 1672617983,
-        "narHash": "sha256-68WDiCBs631mbDDk4UAKdGURKcsfW6hjb7wgudTAe5o=",
+        "lastModified": 1673450908,
+        "narHash": "sha256-b8em+kwrNtnB7gR8SyVf6WuTyQ+6tHS6dzt9D9wgKF0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0fc9fca9c8d43edd79d33fea0dd8409d7c4580f4",
+        "rev": "6c8644fc37b6e141cbfa6c7dc8d98846c4ff0c2e",
         "type": "github"
       },
       "original": {
@@ -164,7 +275,7 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1665296151,
         "narHash": "sha256-uOB0oxqxN9K7XGF1hcnY+PQnlQJ+3bP2vCn/+Ru/bbc=",
@@ -187,22 +298,24 @@
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "kpcli-py": "kpcli-py",
+        "neovim-nightly-overlay": "neovim-nightly-overlay",
+        "nix-index-database": "nix-index-database",
         "nixgl": "nixgl",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "rust-overlay": "rust-overlay"
       }
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": "flake-utils_3",
-        "nixpkgs": "nixpkgs_3"
+        "flake-utils": "flake-utils_4",
+        "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1672712534,
-        "narHash": "sha256-8S0DdMPcbITnlOu0uA81mTo3hgX84wK8S9wS34HEFY4=",
+        "lastModified": 1673490397,
+        "narHash": "sha256-VCSmIYJy/ZzTvEGjdfITmTYfybXBgZpMjyjDndbou+8=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "69fb7bf0a8c40e6c4c197fa1816773774c8ac59f",
+        "rev": "0833f4d063a2bb75aa31680f703ba594a384ffe6",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index efd1cd2..d03e53f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,79 +22,115 @@
       url = "github:rebkwok/kpcli";
       flake = false;
     };
+    neovim-nightly-overlay = {
+      url = "github:nix-community/neovim-nightly-overlay";
+      inputs.nixpkgs.url = "github:nixos/nixpkgs?rev=fad51abd42ca17a60fc1d4cb9382e2d79ae31836";
+    };
+    nix-index-database = {
+      url = "github:mic92/nix-index-database";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = {
-    nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
-    ,...
-  }@_inputs: let 
-    # Context/global stuffs to be passed down
-    # TODO: adapt to different platforms think about different systems later
-    system = "x86_64-linux";
-    pkgs = import nixpkgs {
-      inherit system;
-      overlays = import ./overlays.nix _inputs;
-      config = {
-        allowUnfree = true;
-      };
-    };
-
-    # inject nixpkgs.lib onto c_ (calculus)
-    _lib = pkgs.lib;
-    inputs = (_lib.recursiveUpdate {
-      inherit system; 
+  outputs =
+    { nixpkgs
+    , agenix
+    , home-manager
+    , flake-utils
+    , nixgl
+    , rust-overlay
+    , flake-compat
+    , neovim-nightly-overlay
+    , nix-index-database
+    , ...
+    }@_inputs:
+    let
+      # Context/global stuffs to be passed down
       # NOTE: this will only read files that are within git tree
       # all secrets should go into secrets.nix and secrets/*.age
-      proj_root = let 
-        path = builtins.toString ./.;
-      in {
-        inherit path;
-        configs.path = "${path}/native-configs";
-        scripts.path = "${path}/scripts";
-        secrets.path = "${path}/secrets";
-        testdata.path = "${path}/tests";
-        modules.path = "${path}/modules";
-        hosts.path = "${path}/hosts";
-        users.path = "${path}/users";
-      };
-    } _inputs);
-    inputs_w_pkgs = (_lib.recursiveUpdate {inherit pkgs; lib = pkgs.lib;} inputs);
-    lib = _lib.recursiveUpdate (import ./lib inputs_w_pkgs) _lib;
-
-    # update inputs with our library and past onto our end configurations
-    inputs_w_lib = (lib.recursiveUpdate {inherit lib;} inputs_w_pkgs);
-    modules = (import ./modules inputs_w_lib);
-    hosts = (import ./hosts inputs_w_lib); 
-    users = (import ./users inputs_w_lib);
-    
-    # {nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
-    # ,pkgs, lib (extended), proj_root}
-    final_inputs = inputs_w_lib;
-
-    # Tests: unit + integration
-    unit_tests = (import ./lib/test.nix final_inputs) //
-      {
-        test_example = {
-          expr = "names must start with 'test'";
-          expected = "or won't show up";
+      proj_root =
+        let
+          path = builtins.toString ./.;
+        in
+        {
+          inherit path;
+          configs.path = "${path}/native_configs";
+          scripts.path = "${path}/scripts";
+          secrets.path = "${path}/secrets";
+          testdata.path = "${path}/tests";
+          modules.path = "${path}/modules";
+          hosts.path = "${path}/hosts";
+          users.path = "${path}/users";
         };
-        not_show = {
-          expr = "this will be ignored by lib.runTests";
-          expected = "for sure";
+      # TODO: adapt to different platforms think about different systems later
+      system = "x86_64-linux";
+      overlays = [
+        rust-overlay.overlays.default
+        (self: pkgs@{ lib, ... }: {
+          lib = pkgs.lib // (import ./lib (_inputs // { inherit pkgs proj_root; }));
+        })
+      ];
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = import ./overlays.nix _inputs;
+        config = {
+          allowUnfree = true;
+        };
+      };
+      # now, this lib is extremely powerful as it also engulfs nixpkgs.lib
+      # lib = nixpkgs.lib // pkgs.lib;
+      lib = (builtins.foldl' (lhs: rhs: (nixpkgs.lib.recursiveUpdate lhs rhs)) { } [
+        nixpkgs.lib
+        pkgs.lib
+        (import ./lib {
+          inherit proj_root pkgs overlays system;
+          inherit (pkgs) lib;
+        })
+      ]);
+      inputs_w_lib = (pkgs.lib.recursiveUpdate _inputs {
+        inherit system proj_root pkgs lib;
+      });
+
+      modules = (import ./modules inputs_w_lib);
+      hosts = (import ./hosts inputs_w_lib);
+      users = (import ./users inputs_w_lib);
+
+      # {nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
+      # ,pkgs, lib (extended), proj_root}
+      final_inputs = inputs_w_lib;
+
+      # Tests: unit + integration
+      unit_tests = (import ./lib/test.nix final_inputs) //
+        {
+          test_example = {
+            expr = "names must start with 'test'";
+            expected = "or won't show up";
+          };
+          not_show = {
+            expr = "this will be ignored by lib.runTests";
+            expected = "for sure";
+          };
+        };
+      secrets = import ./secrets final_inputs;
+
+    in
+    {
+      inherit (hosts) nixosConfigurations;
+      inherit (users) homeConfigurations;
+      inherit lib proj_root;
+      devShell."${system}" = import ./dev-shell.nix final_inputs;
+      templates = import ./templates final_inputs;
+      secrets = {
+        pubKeys = {
+          hosts = hosts.pubKeys;
+          users = users.pubKeys;
         };
       };
 
-  in {
-    inherit (hosts) nixosConfigurations;
-    # inherit (users) homeConfigurations;
-    inherit lib;
-    devShell."${system}" = import ./dev-shell.nix final_inputs;
-    templates = import ./templates final_inputs;
-
-    unit_tests = lib.runTests unit_tests;
-    secrets = import ./secrets final_inputs;
-    debug = {
-      inherit final_inputs hosts users modules lib inputs_w_pkgs unit_tests pkgs;
+      unit_tests = lib.runTests unit_tests;
+      debug = {
+        inherit final_inputs hosts users modules lib inputs_w_lib unit_tests pkgs nixpkgs;
+      };
+      formatter."${system}" = pkgs.nixpkgs-fmt;
     };
-  };
 }
diff --git a/hosts/bao/default.nix b/hosts/bao/default.nix
index f24f049..6559c04 100644
--- a/hosts/bao/default.nix
+++ b/hosts/bao/default.nix
@@ -1,5 +1,12 @@
-{nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
-,pkgs, lib, proj_root}: {
-  
-}
+{ nixpkgs
+, agenix
+, home-manager
+, flake-utils
+, nixgl
+, rust-overlay
+, flake-compat
+, pkgs
+, lib
+, proj_root
+}: { }
 
diff --git a/hosts/bao/hardware-configuration.nix b/hosts/bao/hardware-configuration.nix
index c29572c..fb30806 100644
--- a/hosts/bao/hardware-configuration.nix
+++ b/hosts/bao/hardware-configuration.nix
@@ -5,24 +5,28 @@
 
 {
   imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
     ];
 
+  boot.loader.systemd-boot.enable = true;
   boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
   # boot.initrd.kernelModules = [ "amdgpu" ];
-  boot.initrd.kernelModules = [];
-  boot.kernelModules = [ "kvm-amd" "coretemp"];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" "coretemp" ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
     # Might be wise to use /dev/nvme0p1 instead
-    { device = "/dev/disk/by-uuid/27fc09b3-e3b7-4883-94a0-c313a0e0abe2";
+    {
+      device = "/dev/disk/by-uuid/27fc09b3-e3b7-4883-94a0-c313a0e0abe2";
       fsType = "ext4";
     };
 
   fileSystems."/boot" =
     # Might be wise to use /dev/nvme0p2 instead
-    { device = "/dev/disk/by-uuid/EBA6-394D";
+    {
+      device = "/dev/disk/by-uuid/EBA6-394D";
       fsType = "vfat";
     };
 
diff --git a/hosts/default.nix b/hosts/default.nix
index cb737de..b1e6771 100644
--- a/hosts/default.nix
+++ b/hosts/default.nix
@@ -1,64 +1,87 @@
-{nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
-,pkgs, lib, proj_root, nixosDefaultVersion? "22.05", defaultSystem? "x86_64-linux",...}@finalInputs: let
-config = {
-  bao.metadata = {
-    # req
-    hostName = "bao";
-    # opts
-    ssh_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIBuAaAE7TiQmMH300VRj/pYCri1qPmHjd+y9aX2J0Fs";
-    nixosVersion = "22.11";
-    system = "x86_64-linux";
-    preset = "base";
-  };
-  bao.nixosConfig = {
-    modules = [
-      import ../modules/kde.sys.nix
-      import ../modules/pulseaudio.sys.nix
-      import ../modules/storage.perso.sys.nix
-    ];
-  };
-};
-propagate = hostConfig@{metadata, nixosConfig}: let 
-  # req
-  inherit (metadata) hostName;
-  # opts
-  ssh_pubkey = lib.attrByPath ["ssh_pubkey"] null metadata; # metadata.ssh_pubkey??undefined
-  users = lib.attrByPath ["users"] {} metadata;
-  nixosVersion = lib.attrByPath ["nixosVersion"] nixosDefaultVersion metadata;
-  system = lib.attrByPath ["system"] defaultSystem metadata;
-  preset = lib.attrByPath ["preset"] "base" metadata;
-  # infer
-  hardwareConfig = import "${proj_root.hosts.path}/${hostName}/hardware-configuration.nix";
-in {
-  inherit hostName ssh_pubkey users nixosVersion system preset hardwareConfig;
-  nixosConfig = nixosConfig // {
-    inherit system;
-    lib = finalInputs.lib;
-    modules = [
-      {
-        system.stateVersion = nixosVersion;
-        networking.hostName = hostName;
-        users.users = users;
-      }
-      {
-        _module.args = finalInputs;
-      }
-      import "${proj_root.modules.path}/secrets.nix"
-      import "${proj_root.modules.path}/${preset}.sys.nix"
-    ] ++ nixosConfig.modules;
-  };
-};
-mkHostFromPropagated = propagatedHostConfig@{nixosConfig,...}: nixpkgs.lib.nixosSystem nixosConfig;
-mkHost = hostConfig: (lib.pipe [propagate mkHostFromPropagated] hostConfig);
-trimNull = lib.filterAttrsRecursive (name: value: value != null);
-flattenPubkey = lib.mapAttrs (hostName: meta_config: meta_config.metadata.ssh_pubkey);
-in {
-  inherit config;
-  # nixosConfigurations = lib.mapAttrs (name: hostConfig: mkHost hostConfig) config;
-  nixosConfigurations = {};
-  debug = {
-    propagated = lib.mapAttrs (name: hostConfig: propagate hostConfig) config;
+{ nixpkgs
+, agenix
+, home-manager
+, flake-utils
+, nixgl
+, rust-overlay
+, flake-compat
+, pkgs
+, lib
+, proj_root
+, nixosDefaultVersion ? "22.05"
+, defaultSystem ? "x86_64-linux"
+, ...
+}@finalInputs:
+let
+  config = {
+    bao.metadata = {
+      # req
+      hostName = "bao";
+      # opts
+      ssh_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIBuAaAE7TiQmMH300VRj/pYCri1qPmHjd+y9aX2J0Fs";
+      nixosVersion = "22.11";
+      system = "x86_64-linux";
+      preset = "base";
+    };
+    # TODO: add override so that we can add wsl config on top
+    bao.nixosConfig = {
+      modules = [
+        (import ../modules/nvgpu.sys.nix)
+        (import ../modules/kde.sys.nix)
+        (import ../modules/pulseaudio.sys.nix)
+        (import ../modules/storage.perso.sys.nix)
+      ];
+    };
   };
+  propagate = hostConfig@{ metadata, nixosConfig }:
+    let
+      # req
+      inherit (metadata) hostName;
+      # opts
+      ssh_pubkey = lib.attrByPath [ "ssh_pubkey" ] null metadata; # metadata.ssh_pubkey??undefined
+      users = lib.attrByPath [ "users" ] { } metadata;
+      nixosVersion = lib.attrByPath [ "nixosVersion" ] nixosDefaultVersion metadata;
+      system = lib.attrByPath [ "system" ] defaultSystem metadata;
+      preset = lib.attrByPath [ "preset" ] "base" metadata;
+      # infer
+      hardwareConfig = import "${proj_root.hosts.path}/${hostName}/hardware-configuration.nix";
+      # alias to prevent infinite recursion
+      _nixosConfig = nixosConfig;
+    in
+    {
+      inherit hostName ssh_pubkey users nixosVersion system preset hardwareConfig;
+      nixosConfig = _nixosConfig // {
+        inherit system;
+        modules = [
+          {
+            config._module.args = {
+              inherit proj_root;
+              my-lib = finalInputs.lib;
+            };
+          }
+          hardwareConfig
+          {
+            system.stateVersion = nixosVersion;
+            networking.hostName = hostName;
+            users.users = users;
+          }
+          {
+            imports = [ agenix.nixosModule ];
+            environment.systemPackages = [ agenix.defaultPackage.x86_64-linux ];
+          }
+          (import "${proj_root.modules.path}/secrets.nix")
+          (import "${proj_root.modules.path}/${preset}.sys.nix")
+        ] ++ _nixosConfig.modules;
+      };
+    };
+  # we are blessed by the fact that we engulfed nixpkgs.lib.* at top level
+  mkHostFromPropagated = propagatedHostConfig@{ nixosConfig, ... }: nixpkgs.lib.nixosSystem nixosConfig;
+  mkHost = hostConfig: (lib.pipe [ propagate mkHostFromPropagated ] hostConfig);
+  trimNull = lib.filterAttrsRecursive (name: value: value != null);
+  flattenPubkey = lib.mapAttrs (hostName: meta_config: meta_config.metadata.ssh_pubkey);
+in
+{
+  nixosConfigurations = lib.mapAttrs (name: hostConfig: mkHost hostConfig) config;
   # {bao = "ssh-ed25519 ..."; another_host = "ssh-rsa ...";}
-  hostKeys = trimNull (flattenPubkey config);
+  pubKeys = lib.getPubkey config;
 }
diff --git a/hosts/lester/hardware-configuration.nix b/hosts/lester/hardware-configuration.nix
index aa59e37..e45b92a 100644
--- a/hosts/lester/hardware-configuration.nix
+++ b/hosts/lester/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    [
+      (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_scsi" "ahci" "sd_mod" ];
@@ -23,13 +24,13 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/sda";
+    {
+      device = "/dev/sda";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/sdb"; }
-    ];
+    [{ device = "/dev/sdb"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/hosts/lizzi/default.nix b/hosts/lizzi/default.nix
index 145cab8..9596da8 100644
--- a/hosts/lizzi/default.nix
+++ b/hosts/lizzi/default.nix
@@ -1,4 +1,11 @@
-{nixpkgs, agenix, home-manager, flake-utils, nixgl, rust-overlay, flake-compat
-,pkgs, lib, proj_root}: {
-  
-}
+{ nixpkgs
+, agenix
+, home-manager
+, flake-utils
+, nixgl
+, rust-overlay
+, flake-compat
+, pkgs
+, lib
+, proj_root
+}: { }
diff --git a/hosts/nyx/hardware-configuration.nix b/hosts/nyx/hardware-configuration.nix
index 36b63dd..88ffe66 100644
--- a/hosts/nyx/hardware-configuration.nix
+++ b/hosts/nyx/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    [
+      (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_scsi" "ahci" "sd_mod" ];
@@ -13,7 +14,7 @@
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  boot.kernelParams = ["console=ttyS0,19200n8"];
+  boot.kernelParams = [ "console=ttyS0,19200n8" ];
   boot.loader.grub.extraConfig = ''
     serial --speed=19200 --unit=0 --word=8 --parity=no --stop=1
     terminal_input serial;
@@ -23,13 +24,13 @@
   boot.loader.grub.device = "nodev";
   boot.loader.timeout = 10;
   fileSystems."/" =
-    { device = "/dev/sda";
+    {
+      device = "/dev/sda";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/sdb"; }
-    ];
+    [{ device = "/dev/sdb"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/hosts/prince/hardware-configuration.nix b/hosts/prince/hardware-configuration.nix
index e69de29..8b13789 100644
--- a/hosts/prince/hardware-configuration.nix
+++ b/hosts/prince/hardware-configuration.nix
@@ -0,0 +1 @@
+
diff --git a/lib/default.nix b/lib/default.nix
index baf6243..6568f0c 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -1,22 +1,35 @@
-{pkgs
-,nixpkgs
-,proj_root
-,agenix
-,nixosDefaultVersion? "22.05"
-,defaultSystem? "x86_64-linux"
-,...}@inputs: let
+{ pkgs
+  # ,nixpkgs
+, proj_root
+  # ,agenix
+, nixosDefaultVersion ? "22.05"
+, defaultSystem ? "x86_64-linux"
+, ...
+}@inputs:
+let
   lib = pkgs.lib;
-  serde = import ./serde.nix inputs // {inherit lib;};
+  inputs_w_lib = (inputs // { inherit lib; });
+  serde = import ./serde.nix inputs_w_lib;
+  shellAsDrv = { script, pname }: (pkgs.callPackage
+    (
+      # just a pattern that we must remember: args to this are children of pkgs.
+      { writeShellScriptBin }: writeShellScriptBin pname script
+    )
+    { });
+  trimNull = lib.filterAttrs (name: value: value != null);
+  # ssh
+  flattenPubkey = lib.mapAttrs (_identity: meta_config: lib.attrByPath [ "metadata" "ssh_pubkey" ] null meta_config);
+  getPubkey = config: (lib.pipe config [ flattenPubkey trimNull ]);
   # procedure = 
-in {
+in
+{
   # short-hand to create a shell derivation
   # NOTE: this is pure. This means, env vars from devShells might not
   # be accessible unless MAYBE they are `export`ed
-  shellAsDrv = {script, pname}: (pkgs.callPackage (
-    # just a pattern that we must remember: args to this are children of pkgs.
-    {writeShellScriptBin}: writeShellScriptBin pname script
-  ) {});
-
+  inherit shellAsDrv trimNull flattenPubkey getPubkey;
+  ssh = {
+    inherit flattenPubkey getPubkey;
+  };
   # Configures hosts as nixosConfiguration
   # mkHost = {hostName
   # , nixosBareConfiguration
diff --git a/lib/serde.nix b/lib/serde.nix
index 73d5eed..d0d5732 100644
--- a/lib/serde.nix
+++ b/lib/serde.nix
@@ -3,9 +3,9 @@
 # TODO: Add to* formats from pkgs.formats.*
 { pkgs
 , lib
-,...
+, ...
 } @ inputs:
-let 
+let
   yamlToJsonDrv = yamlContent: outputPath: pkgs.callPackage
     ({ runCommand }:
       # runCommand source: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/trivial-builders.nix#L33
@@ -16,14 +16,16 @@ let
           echo "$yamlContent" | yq >$out
         '')
     { };
-in {
+in
+{
   # Takes in a yaml string and produces a derivation with translated JSON at $outputPath
   # similar to builtins.fromJSON, turns a YAML string to nix attrset
   fromYaml = yamlContent: builtins.fromJSON (builtins.readFile (yamlToJsonDrv yamlContent "any_output.json"));
   fromYamlPath = yamlPath: builtins.fromJSON (
     builtins.readFile (
-      yamlToJsonDrv (
-        builtins.readFile yamlPath) 
-      "any-output.json"));
+      yamlToJsonDrv
+        (
+          builtins.readFile yamlPath)
+        "any-output.json"));
   # TODO: fromToml?
 }
diff --git a/lib/test.nix b/lib/test.nix
index 169522e..da4b506 100644
--- a/lib/test.nix
+++ b/lib/test.nix
@@ -1,3 +1 @@
-{lib,...}: {
-  
-}
+{ lib, ... }: { }
diff --git a/modules/amdgpu.sys.nix b/modules/amdgpu.sys.nix
new file mode 100644
index 0000000..d07dc1f
--- /dev/null
+++ b/modules/amdgpu.sys.nix
@@ -0,0 +1,6 @@
+{
+  imports = [ ./gpu.sys.nix ];
+  boot.initrd.kernelModules = [ "amdgpu" ];
+  services.xserver.enable = true;
+  services.xserver.videoDrivers = [ "amdgpu" ];
+}
diff --git a/modules/base.sys.nix b/modules/base.sys.nix
index 6c4e836..8bc5c8a 100644
--- a/modules/base.sys.nix
+++ b/modules/base.sys.nix
@@ -1,14 +1,15 @@
-{pkgs
-,lib
-,proj_root
-}:{
+{ pkgs
+, lib
+, proj_root
+, ...
+}: {
   imports = [
     ./minimal.sys.nix
     ./mosh.sys.nix
     ./tailscale.sys.nix
     ./ssh.sys.nix
   ];
-  environment.systemPackages = [pkgs.lm_sensors];
+  environment.systemPackages = [ pkgs.lm_sensors ];
   time.timeZone = "America/Phoenix";
 
 }
diff --git a/modules/default.nix b/modules/default.nix
index 9fe8c60..be9a414 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -1 +1 @@
-inputs: {}
+inputs: { }
diff --git a/modules/gpu.sys.nix b/modules/gpu.sys.nix
new file mode 100644
index 0000000..40a94e5
--- /dev/null
+++ b/modules/gpu.sys.nix
@@ -0,0 +1,12 @@
+{ pkgs, ... }: {
+  environment.systemPackages = [ pkgs.clinfo pkgs.lshw pkgs.glxinfo pkgs.pciutils pkgs.vulkan-tools ];
+  hardware.opengl = {
+    enable = true;
+    extraPackages = [ pkgs.rocm-opencl-icd pkgs.rocm-opencl-runtime ];
+    # Vulkan
+    driSupport = true;
+    driSupport32Bit = true;
+    package = pkgs.mesa.drivers;
+    package32 = pkgs.pkgsi686Linux.mesa.drivers;
+  };
+}
diff --git a/modules/kde.sys.nix b/modules/kde.sys.nix
index 6744c8e..e5b427f 100644
--- a/modules/kde.sys.nix
+++ b/modules/kde.sys.nix
@@ -1,7 +1,8 @@
 { pkgs
-, lib
+, my-lib
+, ...
 }: {
-  environment.noXlibs = lib.mkForce false;
+  environment.noXlibs = my-lib.mkForce false;
   # TODO: wireless networking
 
   # Enable the X11 windowing system.
diff --git a/modules/minimal.sys.nix b/modules/minimal.sys.nix
index 2af79c1..da0b92c 100644
--- a/modules/minimal.sys.nix
+++ b/modules/minimal.sys.nix
@@ -1,18 +1,21 @@
-{pkgs
-,lib
-,proj_root
-}:{
+{ pkgs
+, lib
+, proj_root
+, modulesPath
+, ...
+}: {
+  imports = [ "${modulesPath}/profiles/minimal.nix" ];
   # prune old builds after a while
-  nix.settings.auto-optimize-store = true;
-  nix.package = pkgs.nixFlakes;             # nix flakes
+  nix.settings.auto-optimise-store = true;
+  nix.package = pkgs.nixFlakes; # nix flakes
   nix.extraOptions = ''
-    experimental=feature = nix-command flakes
+    experimental-features = nix-command flakes
   '';
   programs.neovim = {
-      enable = true;
-      defaultEditor = true;
+    enable = true;
+    defaultEditor = true;
   };
-  programs.git.enable = true;  
+  programs.git.enable = true;
   environment.systemPackages = [
     pkgs.gnumake
     pkgs.wget
@@ -22,6 +25,6 @@
   ];
   users.users.root = {
     # openssh runs in root, no? This is because port < 1024 requires root.
-    openssh.authorizedKeys.keys = lib.strings.splitString "\n" (builtins.readFile "${proj_root}/ssh/authorized_keys");
+    openssh.authorizedKeys.keys = lib.strings.splitString "\n" (builtins.readFile "${proj_root.configs.path}/ssh/authorized_keys");
   };
 }
diff --git a/modules/mosh.sys.nix b/modules/mosh.sys.nix
index 0e287cf..193f661 100644
--- a/modules/mosh.sys.nix
+++ b/modules/mosh.sys.nix
@@ -1,8 +1,9 @@
-{pkgs
-,lib
-,config
+{ pkgs
+, lib
+, config
+, ...
 }: {
-  environment.systemPackages = [pkgs.mosh];
+  environment.systemPackages = [ pkgs.mosh ];
   networking.firewall = lib.mkIf config.networking.firewall.enable {
     allowedUDPPortRanges = [
       { from = 60000; to = 61000; } # mosh
diff --git a/modules/nvgpu.sys.nix b/modules/nvgpu.sys.nix
new file mode 100644
index 0000000..4b6d3e7
--- /dev/null
+++ b/modules/nvgpu.sys.nix
@@ -0,0 +1,7 @@
+{ config, ... }: {
+  imports = [ ./gpu.sys.nix ];
+  nixpkgs.config.allowUnfree = true;
+  services.xserver.enable = true;
+  services.xserver.videoDrivers = [ "nvidia" ];
+  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+}
diff --git a/modules/opengl.sys.nix b/modules/opengl.sys.nix
new file mode 100644
index 0000000..d7aa0c8
--- /dev/null
+++ b/modules/opengl.sys.nix
@@ -0,0 +1,21 @@
+{ config, pkgs, lib }:
+let
+  gpu_pkgs = [ pkgs.clinfo pkgs.lshw pkgs.glxinfo pkgs.pciutils pkgs.vulkan-tools ];
+  gpu_conf = {
+    # openCL
+    hardware.opengl = {
+      enable = true;
+      extraPackages =
+        let
+          inherit (pkgs) rocm-opencl-icd rocm-opencl-runtime;
+        in
+        [ rocm-opencl-icd rocm-opencl-runtime ];
+      # Vulkan
+      driSupport = true;
+      driSupport32Bit = true;
+      package = pkgs.mesa.drivers;
+      package32 = pkgs.pkgsi686Linux.mesa.drivers;
+    };
+  };
+in
+  ;
diff --git a/modules/secrets.nix b/modules/secrets.nix
index 9c91dc6..d491da3 100644
--- a/modules/secrets.nix
+++ b/modules/secrets.nix
@@ -1,8 +1,6 @@
-{agenix
-,proj_root}: {
-  imports = [
-    agenix.nixosModule
-  ];
+{ proj_root
+, ...
+}: {
   age.secrets.s3fs = {
     file = "${proj_root.secrets.path}/s3fs.age";
     # mode = "600";  # owner + group only
@@ -15,5 +13,8 @@
   age.secrets._nhitrl_cred = {
     file = "${proj_root.secrets.path}/_nhitrl.age";
   };
-  environment.systemPackages = [agenix.defaultPackage.x86_64-linux];
+  age.secrets."wifi.env" = {
+    file = "${proj_root.secrets.path}/wifi.env.age";
+  };
+  # environment.systemPackages = [agenix.defaultPackage.x86_64-linux];
 }
diff --git a/modules/ssh.sys.nix b/modules/ssh.sys.nix
index 1e42a3c..7133f33 100644
--- a/modules/ssh.sys.nix
+++ b/modules/ssh.sys.nix
@@ -1,6 +1,6 @@
 {
   services.openssh = {
     enable = true;
-    permitRootLogin = false;
+    permitRootLogin = "no";
   };
 }
diff --git a/modules/storage.perso.sys.nix b/modules/storage.perso.sys.nix
index e16db18..4a0b365 100644
--- a/modules/storage.perso.sys.nix
+++ b/modules/storage.perso.sys.nix
@@ -1,5 +1,5 @@
 # Personal configuration on storage solution
-{ pkgs, config, lib }: {
+{ pkgs, config, lib, ... }: {
   environment.systemPackages = [
     pkgs.s3fs
     pkgs.cifs-utils
@@ -70,28 +70,32 @@
           bucket = "digital-garden";
         })
         (
-          let args = {
-            "-fstype" = "cifs";
-            credentials = config.age.secrets._nhitrl_cred.path;
-            user = null;
-            uid = "1001";
-            gid = "100";
-            dir_mode = "0777";
-            file_mode = "0777";
-          };
-          in "felia_d ${confToBackendArg args} ://felia.coati-celsius.ts.net/d"
+          let
+            args = {
+              "-fstype" = "cifs";
+              credentials = config.age.secrets._nhitrl_cred.path;
+              user = null;
+              uid = "1001";
+              gid = "100";
+              dir_mode = "0777";
+              file_mode = "0777";
+            };
+          in
+          "felia_d ${confToBackendArg args} ://felia.coati-celsius.ts.net/d"
         )
         (
-          let args = {
-            "-fstype" = "cifs";
-            credentials = config.age.secrets._nhitrl_cred.path;
-            user = null;
-            uid = "1001";
-            gid = "100";
-            dir_mode = "0777";
-            file_mode = "0777";
-          };
-          in "felia_f ${confToBackendArg args} ://felia.coati-celsius.ts.net/f"
+          let
+            args = {
+              "-fstype" = "cifs";
+              credentials = config.age.secrets._nhitrl_cred.path;
+              user = null;
+              uid = "1001";
+              gid = "100";
+              dir_mode = "0777";
+              file_mode = "0777";
+            };
+          in
+          "felia_f ${confToBackendArg args} ://felia.coati-celsius.ts.net/f"
         )
       ];
       persoConf = pkgs.writeText "auto.personal" (builtins.concatStringsSep "\n" personalStorage);
diff --git a/modules/tailscale.sys.nix b/modules/tailscale.sys.nix
index e7da3d5..f926523 100644
--- a/modules/tailscale.sys.nix
+++ b/modules/tailscale.sys.nix
@@ -1,8 +1,9 @@
-{pkgs
-,config
-,lib
-,...}: {
-  environment.systemPackages = [pkgs.tailscale];
+{ pkgs
+, config
+, lib
+, ...
+}: {
+  environment.systemPackages = [ pkgs.tailscale ];
   services.tailscale.enable = true;
 
   systemd.services.tailscale-autoconnect = {
diff --git a/modules/wifi.sys.nix b/modules/wifi.sys.nix
new file mode 100644
index 0000000..1d615ee
--- /dev/null
+++ b/modules/wifi.sys.nix
@@ -0,0 +1,8 @@
+{ config, ... }: {
+  networking.wireless.enable = true;
+  networking.wireless.environmentFile = config.age.secrets."wifi.env";
+  networking.wireless.networks = {
+    "Hoang Sa".psk = "@DESERT_PSK@";
+    "Truong Sa".psk = "@DESERT_PSK@";
+  };
+}
diff --git a/native_configs/neovim/init.lua b/native_configs/neovim/init.lua
index 8e4fea7..b29fbdd 100644
--- a/native_configs/neovim/init.lua
+++ b/native_configs/neovim/init.lua
@@ -20,19 +20,37 @@ if empty(glob(plug_path))
 endif
 ]])
 
+local function truthy(v) return v ~= nil end
+
+local function cfg(cfg_var, do_fn) if truthy(cfg_var) then do_fn() end end
+
+local function cfg_render(do_fn)
+    local should_render = not truthy(os.getenv("NVIM_HEADLESS"))
+    cfg(should_render, do_fn)
+end
+
 -- vim-plug
 local Plug = vim.fn['plug#']
 
 vim.call('plug#begin')
 
 -- libs and dependencies
-Plug('nvim-lua/plenary.nvim')
+Plug('nvim-lua/plenary.nvim') -- The base of all plugins
 
 -- plugins
 Plug('tjdevries/nlua.nvim') -- adds symbols of vim stuffs in init.lua
 Plug('nvim-treesitter/nvim-treesitter') -- language parser engine for highlighting
 Plug('nvim-treesitter/nvim-treesitter-textobjects') -- more text objects
 Plug('nvim-telescope/telescope.nvim', { branch = '0.1.x' }) -- file browser
+-- TODO: this might need to be taken extra care in our Nix config
+-- What this Plug declaration means is this repo needs to be built on our running environment
+-- -----
+-- What to do:
+-- - Run `make` at anytime before Nix is done on this repository
+--   - Might mean that we fetch this repository, run make, and copy to destination folder
+-- - Make sure that if we run `make` at first Plug run, that `make` is idempotent
+-- OR
+--   Make sure that Plug does not run `make` and use the output it needs
 Plug('nvim-telescope/telescope-fzf-native.nvim',
     { ['do'] = 'make >> /tmp/log 2>&1' })
 Plug('nvim-telescope/telescope-file-browser.nvim')
@@ -67,15 +85,17 @@ Plug('Olical/conjure') -- REPL on the source for Clojure (and other LISPs)
 Plug('gennaro-tedesco/nvim-jqx') -- JSON formatter (use :Jqx*)
 Plug('kylechui/nvim-surround') -- surrounds with tags/parenthesis
 Plug('simrat39/rust-tools.nvim') -- config rust-analyzer and nvim integration
-Plug('simrat39/inlay-hints.nvim') -- type-hints with pseudo-virtual texts
 
 -- UI & colorscheme
-Plug('gruvbox-community/gruvbox') -- theme provider
-Plug('nvim-lualine/lualine.nvim') -- fancy status line
-Plug('lukas-reineke/indent-blankline.nvim') -- identation lines on blank lines
-Plug('kyazdani42/nvim-web-devicons') -- icons for folder and filetypes
-Plug('m-demare/hlargs.nvim') -- highlights arguments; great for func prog
-Plug('folke/todo-comments.nvim') -- Highlights TODO
+cfg_render(function()
+    Plug('simrat39/inlay-hints.nvim') -- type-hints with pseudo-virtual texts
+    Plug('gruvbox-community/gruvbox') -- theme provider
+    Plug('nvim-lualine/lualine.nvim') -- fancy status line
+    Plug('lukas-reineke/indent-blankline.nvim') -- identation lines on blank lines
+    Plug('kyazdani42/nvim-web-devicons') -- icons for folder and filetypes
+    Plug('m-demare/hlargs.nvim') -- highlights arguments; great for func prog
+    Plug('folke/todo-comments.nvim') -- Highlights TODO
+end)
 
 -- other utilities
 Plug('nvim-treesitter/nvim-treesitter', { run = ':TSUpdate' })
@@ -84,6 +104,11 @@ Plug('nvim-treesitter/playground') -- Sees Treesitter AST - less hair pulling, m
 Plug('saadparwaiz1/cmp_luasnip') -- snippet engine
 Plug('L3MON4D3/LuaSnip') -- snippet engine
 Plug('mickael-menu/zk-nvim') -- Zettelkasten
+-- Switch cases:
+-- `gsp` -> PascalCase (classes), `gsc` -> camelCase (Java), `gs_` -> snake_case (C/C++/Rust)
+-- `gsu` -> UPPER_CASE (CONSTs), `gsk` -> kebab-case (Clojure), `gsK` -> Title-Kebab-Case
+-- `gs.` -> dot.case (R)
+Plug('arthurxavierx/vim-caser') -- switch cases
 
 ---------
 vim.call('plug#end')
@@ -95,12 +120,13 @@ endif
 ]])
 
 -- special terminals, place them at 4..=7 for ergonomics
-vim.api.nvim_create_autocmd({"VimEnter"}, {
+vim.api.nvim_create_autocmd({ "VimEnter" }, {
     callback = function()
         local function named_term(term_idx, term_name)
             require('harpoon.term').gotoTerminal(term_idx)
-            vim.cmd([[:exe ":file ]]..term_name..[[" | :bfirst]])
+            vim.cmd([[:exe ":file ]] .. term_name .. [[" | :bfirst]])
         end
+
         -- term:ctl at 4
         named_term(4, "term:ctl")
         -- term:dev at 5
@@ -154,7 +180,7 @@ vim.keymap.set({ 'n', 'v' }, '<Space>', '<Nop>', { silent = true })
 -- that does not collide with vi-motion keybind. This is because
 -- <Alt-x> -> ^[x; while <Esc> on the terminal is ^[
 vim.keymap.set('t', '<Esc>', '<C-\\><C-n>)')
-vim.keymap.set({ 'n', 'i', 'v' }, '<c-l>', '<Cmd>mode<Cr>', {desc = ""}) -- redraw on every mode
+vim.keymap.set({ 'n', 'i', 'v' }, '<c-l>', '<Cmd>mode<Cr>', { desc = "" }) -- redraw on every mode
 
 -- diagnostics (errors/warnings to be shown)
 vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
diff --git a/nix-conf/home-manager/base/default.nix b/nix-conf/home-manager/base/default.nix
index 5621907..a64a7a1 100644
--- a/nix-conf/home-manager/base/default.nix
+++ b/nix-conf/home-manager/base/default.nix
@@ -1,12 +1,12 @@
-{ 
-    mkModuleArgs = import ./mkModuleArgs.nix;
-    modules = [
-        ./alacritty.nix
-        ./git.nix
-        ./ssh.nix
-        ./shells.nix
-        {
-            config.programs.home-manager.enable = true;
-        }
-    ];
+{
+  mkModuleArgs = import ./mkModuleArgs.nix;
+  modules = [
+    ./alacritty.nix
+    ./git.nix
+    ./ssh.nix
+    ./shells.nix
+    {
+      config.programs.home-manager.enable = true;
+    }
+  ];
 }
diff --git a/nix-conf/home-manager/base/git.nix b/nix-conf/home-manager/base/git.nix
index 8db840b..c9eec86 100644
--- a/nix-conf/home-manager/base/git.nix
+++ b/nix-conf/home-manager/base/git.nix
@@ -66,9 +66,9 @@ in
       example = 3000;
     };
   };
-# TODO : anyway to override configuration?
+  # TODO : anyway to override configuration?
   config.programs.git = {
-    inherit (cfg) enable ignores; 
+    inherit (cfg) enable ignores;
     userName = cfg.name;
     userEmail = cfg.email;
     aliases = baseAliases // cfg.aliases;
diff --git a/nix-conf/home-manager/base/graphics.nix b/nix-conf/home-manager/base/graphics.nix
index d5646bc..646b720 100644
--- a/nix-conf/home-manager/base/graphics.nix
+++ b/nix-conf/home-manager/base/graphics.nix
@@ -1,7 +1,7 @@
 { pkgs, config, lib, ... }:
 let
   cfg = config.base.graphics;
-  cfgEnable = cfg.enable or cfg.useNixGLPackage != null;
+  cfgEnable = cfg.enable or (cfg.useNixGL.defaultPackage != null);
   types = lib.types;
 in
 {
@@ -11,7 +11,7 @@ in
     _enable = lib.mkOption {
       type = types.bool;
       description = "Whether the graphics is implicitly enabled (final)";
-      internal = true;
+      # internal = true;
       default = false;
     };
     useNixGL = {
@@ -35,7 +35,7 @@ in
   # they will also need to do `config.base.shells.enable`
   # generally, we want the behavior: import means enable
   config = lib.mkIf cfgEnable {
-    base.graphics._enable = cfgEnable;
+    base.graphics._enable = lib.mkForce true;
     base.shells = {
       shellAliases = lib.mkIf (cfg.useNixGL.defaultPackage != null) {
         nixGL = cfg.useNixGL.defaultPackage;
diff --git a/nix-conf/home-manager/base/keepass.nix b/nix-conf/home-manager/base/keepass.nix
index 84f6ca3..e985131 100644
--- a/nix-conf/home-manager/base/keepass.nix
+++ b/nix-conf/home-manager/base/keepass.nix
@@ -22,8 +22,8 @@ in
     keyfile_path = lib.mkOption {
       type = lib.types.nullOr lib.types.path;
       description = ''
-      Path to key file for the database
-      If null, then the field is unset
+        Path to key file for the database
+        If null, then the field is unset
       '';
       default = null;
       example = "/path/to/mykeyfile.key";
@@ -47,7 +47,7 @@ in
     ] ++ (if cfg.use_gui or config.base.graphics._enable then [
       pkgs.keepass # Personal secret management
     ] else [ ]);
-    home.file.".kp/config.ini".text = lib.generators.toINI {} (trimNull {
+    home.file.".kp/config.ini".text = lib.generators.toINI { } (trimNull {
       default = {
         KEEPASSDB = cfg.path;
         KEEPASSDB_KEYFILE = cfg.keyfile_path;
diff --git a/nix-conf/home-manager/base/mkModuleArgs.nix b/nix-conf/home-manager/base/mkModuleArgs.nix
index 64720f7..844e7c9 100644
--- a/nix-conf/home-manager/base/mkModuleArgs.nix
+++ b/nix-conf/home-manager/base/mkModuleArgs.nix
@@ -1,3 +1,5 @@
+# Turns given inputs into the standardized shape of the inputs to configure  
+# custom base modules in this directory.
 { pkgs
 , lib ? pkgs.lib
 , ...
diff --git a/nix-conf/home-manager/base/private_chromium.nix b/nix-conf/home-manager/base/private_chromium.nix
index c8de51c..5cb7204 100644
--- a/nix-conf/home-manager/base/private_chromium.nix
+++ b/nix-conf/home-manager/base/private_chromium.nix
@@ -1,3 +1,5 @@
+# TODO: maybe throw if base.graphics is not enabled?
+# Though, headless chromium might be possible
 { config, pkgs, lib, ... }:
 let cfg = config.base.private_chromium;
 in
diff --git a/nix-conf/home-manager/base/productive_desktop.nix b/nix-conf/home-manager/base/productive_desktop.nix
index f319af8..944fbff 100644
--- a/nix-conf/home-manager/base/productive_desktop.nix
+++ b/nix-conf/home-manager/base/productive_desktop.nix
@@ -1,8 +1,11 @@
-inputs@{pkgs,...}: {
+# A module that takes care of a GUI-ful, productive desktop environment
+inputs@{ pkgs, ... }: {
   imports = [
     # slack
-    ({pkgs,...}: {
-      home.packages = [pkgs.slack];
+    ({ pkgs, ... }: {
+      home.packages = [ 
+        pkgs.slack
+      ];
     })
     ./private_chromium.nix
   ];
diff --git a/nix-conf/home-manager/base/shells.nix b/nix-conf/home-manager/base/shells.nix
index 071deac..6c278ee 100644
--- a/nix-conf/home-manager/base/shells.nix
+++ b/nix-conf/home-manager/base/shells.nix
@@ -83,12 +83,12 @@ in
       oh-my-zsh = {
         enable = true;
         plugins = [
-          "git"   # git command aliases: https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins/git#aliases
+          "git" # git command aliases: https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins/git#aliases
           # "sudo"  # double-escape to prepend sudo  # UPDATE: just use vi-mode lol
           "command-not-found" # suggests which package to install; does not support nixos (we have solution already)
           "gitignore" # `gi list` -> `gi java >>.gitignore`
-          "ripgrep"   # adds completion for `rg`
-          "rust"      # compe for rustc/cargo
+          "ripgrep" # adds completion for `rg`
+          "rust" # compe for rustc/cargo
           # "vi-mode"   # edit promps with vi motions :)
         ];
       };
@@ -96,9 +96,9 @@ in
         # VI_MODE_RESET_PROMPT_ON_MODE_CHANGE = true;
         # VI_MODE_SET_CURSOR = true;
         # ZVM_VI_ESCAPE_BINDKEY = "";
-        ZVM_READKEY_ENGINE="$ZVM_READKEY_ENGINE_NEX";
-        ZVM_KEYTIMEOUT=0.004; # 40ms, or subtly around 25 FPS. I'm a gamer :)
-        ZVM_ESCAPE_KEYTIMEOUT=0.004; # 40ms, or subtly around 25 FPS. I'm a gamer :)
+        ZVM_READKEY_ENGINE = "$ZVM_READKEY_ENGINE_NEX";
+        ZVM_KEYTIMEOUT = 0.004; # 40ms, or subtly around 25 FPS. I'm a gamer :)
+        ZVM_ESCAPE_KEYTIMEOUT = 0.004; # 40ms, or subtly around 25 FPS. I'm a gamer :)
       };
       initExtra = (cfg.shellInitExtra or "") + ''
         source ${pkgs.zsh-vi-mode}/share/zsh-vi-mode/zsh-vi-mode.plugin.zsh
diff --git a/nix-conf/home-manager/base/ssh.nix b/nix-conf/home-manager/base/ssh.nix
index 637651e..dd02bdf 100644
--- a/nix-conf/home-manager/base/ssh.nix
+++ b/nix-conf/home-manager/base/ssh.nix
@@ -1,7 +1,7 @@
 { config
 , proj_root
 , myLib
-,  ...
+, ...
 }:
 let cfg = config.base.ssh;
 in
diff --git a/nix-conf/home-manager/flake.lock b/nix-conf/home-manager/flake.lock
index 16cae97..f3543ff 100644
--- a/nix-conf/home-manager/flake.lock
+++ b/nix-conf/home-manager/flake.lock
@@ -16,6 +16,22 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1668681692,
+        "narHash": "sha256-Ht91NGdewz8IQLtWZ9LCeNXMSXHUss+9COoqu6JLmXU=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "009399224d5e398d03b22badca40a37ac85412a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "locked": {
         "lastModified": 1667395993,
@@ -33,11 +49,11 @@
     },
     "flake-utils_2": {
       "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
         "type": "github"
       },
       "original": {
@@ -61,6 +77,21 @@
         "type": "github"
       }
     },
+    "flake-utils_4": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -69,11 +100,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1672770368,
-        "narHash": "sha256-iO6Z9blIe8dcPh3VT2nkej9EimORCoskGQR6xNjICWI=",
+        "lastModified": 1673343300,
+        "narHash": "sha256-5Xdj6kpXYMie0MlnGwqK5FaMdsedxvyuakWtyKB3zaQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d01e7280ad7d13a5a0fae57355bd0dbfe5b81969",
+        "rev": "176e455371a8371586e8a3ff0d56ee9f3ca2324e",
         "type": "github"
       },
       "original": {
@@ -98,14 +129,58 @@
         "type": "github"
       }
     },
-    "nixgl": {
+    "neovim-flake": {
       "inputs": {
         "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "dir": "contrib",
+        "lastModified": 1673504032,
+        "narHash": "sha256-x4nv7g8+bQXg5PfkFw3vCcr3pYI0Hco0VoSbAy60xek=",
+        "owner": "neovim",
+        "repo": "neovim",
+        "rev": "143d3f1f3224bca02bfef7df0932b9d7524a3ff2",
+        "type": "github"
+      },
+      "original": {
+        "dir": "contrib",
+        "owner": "neovim",
+        "repo": "neovim",
+        "type": "github"
+      }
+    },
+    "neovim-nightly-overlay": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "neovim-flake": "neovim-flake",
         "nixpkgs": "nixpkgs"
       },
+      "locked": {
+        "lastModified": 1673511313,
+        "narHash": "sha256-QGUT3w1bHclVRqX958EPOd3OxR/R10MoV97N5jx/qbw=",
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "rev": "5af6fe31f9906e70a1e8985dbbdcc4ae66c7f82d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "type": "github"
+      }
+    },
+    "nixgl": {
+      "inputs": {
+        "flake-utils": "flake-utils_3",
+        "nixpkgs": "nixpkgs_2"
+      },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-KP+2qdZlhmRkrafuuEofg7YnNdVmGV95ipvpuqmJneI=",
+        "narHash": "sha256-GgIXbuHvwReBHZUyfSKS6DET3CfD6EEKABj6ndpcqHQ=",
         "path": "./../../out-of-tree/nixGL",
         "type": "path"
       },
@@ -115,6 +190,22 @@
       }
     },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1671983799,
+        "narHash": "sha256-Z2Ro6hFPZHkBqkVXY5/aBUzxi5xizQGvuHQ9+T5B/ks=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "fad51abd42ca17a60fc1d4cb9382e2d79ae31836",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1660551188,
         "narHash": "sha256-a1LARMMYQ8DPx1BgoI/UN4bXe12hhZkCNqdxNi6uS0g=",
@@ -129,13 +220,13 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs_3": {
       "locked": {
-        "lastModified": 1672617983,
-        "narHash": "sha256-68WDiCBs631mbDDk4UAKdGURKcsfW6hjb7wgudTAe5o=",
+        "lastModified": 1673450908,
+        "narHash": "sha256-b8em+kwrNtnB7gR8SyVf6WuTyQ+6tHS6dzt9D9wgKF0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "0fc9fca9c8d43edd79d33fea0dd8409d7c4580f4",
+        "rev": "6c8644fc37b6e141cbfa6c7dc8d98846c4ff0c2e",
         "type": "github"
       },
       "original": {
@@ -145,7 +236,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1665296151,
         "narHash": "sha256-uOB0oxqxN9K7XGF1hcnY+PQnlQJ+3bP2vCn/+Ru/bbc=",
@@ -167,22 +258,23 @@
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "kpcli-py": "kpcli-py",
+        "neovim-nightly-overlay": "neovim-nightly-overlay",
         "nixgl": "nixgl",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "rust-overlay": "rust-overlay"
       }
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": "flake-utils_3",
-        "nixpkgs": "nixpkgs_3"
+        "flake-utils": "flake-utils_4",
+        "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1672712534,
-        "narHash": "sha256-8S0DdMPcbITnlOu0uA81mTo3hgX84wK8S9wS34HEFY4=",
+        "lastModified": 1673490397,
+        "narHash": "sha256-VCSmIYJy/ZzTvEGjdfITmTYfybXBgZpMjyjDndbou+8=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "69fb7bf0a8c40e6c4c197fa1816773774c8ac59f",
+        "rev": "0833f4d063a2bb75aa31680f703ba594a384ffe6",
         "type": "github"
       },
       "original": {
diff --git a/nix-conf/home-manager/flake.nix b/nix-conf/home-manager/flake.nix
index 2eb9188..6950948 100644
--- a/nix-conf/home-manager/flake.nix
+++ b/nix-conf/home-manager/flake.nix
@@ -18,6 +18,15 @@
       url = "github:rebkwok/kpcli";
       flake = false;
     };
+    neovim-nightly-overlay = {
+      url = "github:nix-community/neovim-nightly-overlay";
+      # Pin to a nixpkgs revision that doesn't have NixOS/nixpkgs#208103 yet
+      inputs.nixpkgs.url = "github:nixos/nixpkgs?rev=fad51abd42ca17a60fc1d4cb9382e2d79ae31836";
+    };
+    nix-index-database = {
+      url = "github:mic92/nix-index-database";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -27,10 +36,22 @@
     , rust-overlay
     , flake-utils
     , kpcli-py
+    , neovim-nightly-overlay
     , ...
     }:
     let
-      system = "x86_64-linux";
+      # config_fn:: system -> config
+      cross_platform = config_fn: ({
+        packages = builtins.foldl'
+          (prev: system: prev // {
+            "${system}" = config_fn system;
+          })
+          { }
+          flake-utils.lib.defaultSystems;
+      });
+    in
+    cross_platform (system:
+    let
       overlays = import ./../../overlays.nix flake_inputs;
       # pkgs = nixpkgs.legacyPackages.${system}.appendOverlays overlays;
       pkgs = import nixpkgs {
@@ -40,11 +61,11 @@
       # lib = (import ../lib { inherit pkgs; lib = pkgs.lib; });
       base = import ./base;
       inherit (base) mkModuleArgs;
-      
-      kde_module = {config, pkgs, ...}: {
+
+      kde_module = { config, pkgs, ... }: {
         fonts.fontconfig.enable = true;
         home.packages = [
-          (pkgs.nerdfonts.override {fonts = ["DroidSansMono"];})
+          (pkgs.nerdfonts.override { fonts = [ "DroidSansMono" ]; })
         ];
         # For some reasons, Windows es in the font name as DroidSansMono NF
         # so we need to override this
@@ -56,13 +77,14 @@
         inherit overlays pkgs base;
       };
       homeConfigurations =
-        let x11_wsl = ''
-          # x11 output for WSL
-          export DISPLAY=$(ip route list default | awk '{print $3}'):0
-          export LIBGL_ALWAYS_INDIRECT=1
-        '';
+        let
+          x11_wsl = ''
+            # x11 output for WSL
+            export DISPLAY=$(ip route list default | awk '{print $3}'):0
+            export LIBGL_ALWAYS_INDIRECT=1
+          '';
         in
-        rec {
+        {
           "hungtr" = home-manager.lib.homeManagerConfiguration {
             inherit pkgs;
             modules = base.modules ++ [
@@ -85,6 +107,14 @@
               ./home.nix
               kde_module
               ./base/productive_desktop.nix
+              {
+                # since home.nix forces us to use keepass, and base.keepass.path
+                # defaults to a bad value (on purpose), we should configure a
+                # it to be the proper path
+                base.keepass.path = "/perso/garden/keepass.kdbx";
+                base.graphics.useNixGL.defaultPackage = "nixGLNvidia";
+                base.graphics.useNixGL.enable = true;
+              }
             ];
             # optionally pass inarguments to module
             # we migrate this from in-place modules to allow flexibility
@@ -97,6 +127,25 @@
               };
             };
           };
+          "htran" = home-manager.lib.homeManagerConfiguration { 
+            inherit pkgs;
+            modules = [
+              ./home.nix
+              {
+                base.graphics.enable = false;
+                base.graphics.useNixGL.defaultPackage = null;
+                base.keepass.path = "/Users/htran/keepass.kdbx";
+                # don't want to deal with GL stuffs on mac yet :/
+              }
+            ];
+            extraSpecialArgs = mkModuleArgs {
+              inherit pkgs;
+              myHome = {
+                username = "htran";
+                homeDirectory = "/Users/htran";
+              };
+            };
+          };
           "nixos@Felia" = home-manager.lib.homeManagerConfiguration {
             inherit pkgs;
             modules = [
@@ -147,8 +196,9 @@
                 base.alacritty.font.family = "BitstreamVeraSansMono Nerd Font";
                 base.keepass.path = "/media/homelab/f/PersistentHotStorage/keepass.kdbx";
               }
+              ./base/productive_desktop.nix
             ];
-            
+
             extraSpecialArgs = mkModuleArgs {
               inherit pkgs;
               myHome = {
@@ -161,5 +211,5 @@
             };
           };
         };
-    };
+    });
 }
diff --git a/nix-conf/home-manager/fromYamlSandbox/flake.nix b/nix-conf/home-manager/fromYamlSandbox/flake.nix
index 3525075..1bfc84a 100644
--- a/nix-conf/home-manager/fromYamlSandbox/flake.nix
+++ b/nix-conf/home-manager/fromYamlSandbox/flake.nix
@@ -1,109 +1,111 @@
 {
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-    from-yaml ={
+    from-yaml = {
       url = "github:pegasust/fromYaml";
       flake = false;
     };
   };
-  outputs = {nixpkgs,from-yaml, ...}: let
-    system = "x86_64-linux";
-    pkgs = import nixpkgs {inherit system;};
-    lib = {
-        fromYaml = import "${from-yaml}/fromYaml.nix" {lib = pkgs.lib;};
+  outputs = { nixpkgs, from-yaml, ... }:
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+      lib = {
+        fromYaml = import "${from-yaml}/fromYaml.nix" { lib = pkgs.lib; };
+      };
+    in
+    {
+      inherit nixpkgs;
+      inherit from-yaml;
+      inherit lib;
+      inherit pkgs;
+      fromYamlFn = lib.fromYaml;
+      yamlCmd = str: (builtins.fromJSON (pkgs.runCommand "echo ${str} | yq"));
+      test_0 = ''
+        key_bindings:
+          - hello:
+              "N"
+      '';
+      key_bind = ''
+        key_bindings:
+          - { key: N, mods: Control, action: CreateNewWindow }
+          # - { key: Paste,                                       action: Paste          }
+          # - { key: Copy,                                        action: Copy           }
+          #- { key: L,         mods: Control,                    action: ClearLogNotice }
+          #- { key: L,         mods: Control, mode: ~Vi|~Search, chars: "\x0c"          }
+          #- { key: PageUp,    mods: Shift,   mode: ~Alt,        action: ScrollPageUp   }
+          #- { key: PageDown,  mods: Shift,   mode: ~Alt,        action: ScrollPageDown }
+          #- { key: Home,      mods: Shift,   mode: ~Alt,        action: ScrollToTop    }
+          #- { key: End,       mods: Shift,   mode: ~Alt,        action: ScrollToBottom }
+
+          # Vi Mode
+          #- { key: Space,  mods: Shift|Control, mode: ~Search,    action: ToggleViMode            }
+          - { key: Escape, mods: Shift, mode: ~Search, action: ToggleViMode }
+          #- { key: Space,  mods: Shift|Control, mode: Vi|~Search, action: ScrollToBottom          }
+          #- { key: Escape,                      mode: Vi|~Search, action: ClearSelection          }
+          #- { key: I,                           mode: Vi|~Search, action: ToggleViMode            }
+          #- { key: I,                           mode: Vi|~Search, action: ScrollToBottom          }
+          #- { key: C,      mods: Control,       mode: Vi|~Search, action: ToggleViMode            }
+          #- { key: Y,      mods: Control,       mode: Vi|~Search, action: ScrollLineUp            }
+          #- { key: E,      mods: Control,       mode: Vi|~Search, action: ScrollLineDown          }
+          #- { key: G,                           mode: Vi|~Search, action: ScrollToTop             }
+          #- { key: G,      mods: Shift,         mode: Vi|~Search, action: ScrollToBottom          }
+          #- { key: B,      mods: Control,       mode: Vi|~Search, action: ScrollPageUp            }
+          #- { key: F,      mods: Control,       mode: Vi|~Search, action: ScrollPageDown          }
+          #- { key: U,      mods: Control,       mode: Vi|~Search, action: ScrollHalfPageUp        }
+          #- { key: D,      mods: Control,       mode: Vi|~Search, action: ScrollHalfPageDown      }
+          #- { key: Y,                           mode: Vi|~Search, action: Copy                    }
+          #- { key: Y,                           mode: Vi|~Search, action: ClearSelection          }
+          #- { key: Copy,                        mode: Vi|~Search, action: ClearSelection          }
+          #- { key: V,                           mode: Vi|~Search, action: ToggleNormalSelection   }
+          #- { key: V,      mods: Shift,         mode: Vi|~Search, action: ToggleLineSelection     }
+          #- { key: V,      mods: Control,       mode: Vi|~Search, action: ToggleBlockSelection    }
+          #- { key: V,      mods: Alt,           mode: Vi|~Search, action: ToggleSemanticSelection }
+          #- { key: Return,                      mode: Vi|~Search, action: Open                    }
+          #- { key: Z,                           mode: Vi|~Search, action: CenterAroundViCursor    }
+          #- { key: K,                           mode: Vi|~Search, action: Up                      }
+          #- { key: J,                           mode: Vi|~Search, action: Down                    }
+          #- { key: H,                           mode: Vi|~Search, action: Left                    }
+          #- { key: L,                           mode: Vi|~Search, action: Right                   }
+          #- { key: Up,                          mode: Vi|~Search, action: Up                      }
+          #- { key: Down,                        mode: Vi|~Search, action: Down                    }
+          #- { key: Left,                        mode: Vi|~Search, action: Left                    }
+          #- { key: Right,                       mode: Vi|~Search, action: Right                   }
+          #- { key: Key0,                        mode: Vi|~Search, action: First                   }
+          #- { key: Key4,   mods: Shift,         mode: Vi|~Search, action: Last                    }
+          #- { key: Key6,   mods: Shift,         mode: Vi|~Search, action: FirstOccupied           }
+          #- { key: H,      mods: Shift,         mode: Vi|~Search, action: High                    }
+          #- { key: M,      mods: Shift,         mode: Vi|~Search, action: Middle                  }
+          #- { key: L,      mods: Shift,         mode: Vi|~Search, action: Low                     }
+          #- { key: B,                           mode: Vi|~Search, action: SemanticLeft            }
+          #- { key: W,                           mode: Vi|~Search, action: SemanticRight           }
+          #- { key: E,                           mode: Vi|~Search, action: SemanticRightEnd        }
+          #- { key: B,      mods: Shift,         mode: Vi|~Search, action: WordLeft                }
+          #- { key: W,      mods: Shift,         mode: Vi|~Search, action: WordRight               }
+          #- { key: E,      mods: Shift,         mode: Vi|~Search, action: WordRightEnd            }
+          #- { key: Key5,   mods: Shift,         mode: Vi|~Search, action: Bracket                 }
+          #- { key: Slash,                       mode: Vi|~Search, action: SearchForward           }
+          #- { key: Slash,  mods: Shift,         mode: Vi|~Search, action: SearchBackward          }
+          #- { key: N,                           mode: Vi|~Search, action: SearchNext              }
+          #- { key: N,      mods: Shift,         mode: Vi|~Search, action: SearchPrevious          }
+
+          # Search Mode
+          #- { key: Return,                mode: Search|Vi,  action: SearchConfirm         }
+          #- { key: Escape,                mode: Search,     action: SearchCancel          }
+          #- { key: C,      mods: Control, mode: Search,     action: SearchCancel          }
+          #- { key: U,      mods: Control, mode: Search,     action: SearchClear           }
+          #- { key: W,      mods: Control, mode: Search,     action: SearchDeleteWord      }
+          #- { key: P,      mods: Control, mode: Search,     action: SearchHistoryPrevious }
+          #- { key: N,      mods: Control, mode: Search,     action: SearchHistoryNext     }
+          #- { key: Up,                    mode: Search,     action: SearchHistoryPrevious }
+          #- { key: Down,                  mode: Search,     action: SearchHistoryNext     }
+          #- { key: Return,                mode: Search|~Vi, action: SearchFocusNext       }
+          #- { key: Return, mods: Shift,   mode: Search|~Vi, action: SearchFocusPrevious   }
+
+          # (Windows, Linux, and BSD only)
+          - { key: V,              mods: Control|Shift, mode: ~Vi,        action: Paste            }
+          - { key: C,              mods: Control|Shift,                   action: Copy             }
+      '';
     };
-  in {
-    inherit nixpkgs;
-    inherit from-yaml;
-    inherit lib;
-    inherit pkgs;
-    fromYamlFn = lib.fromYaml;
-    yamlCmd = str: (builtins.fromJSON(pkgs.runCommand "echo ${str} | yq"));
-    test_0 = ''
-    key_bindings:
-      - hello:
-          "N"
-    '';
-    key_bind = ''
-key_bindings:
-  - { key: N, mods: Control, action: CreateNewWindow }
-  # - { key: Paste,                                       action: Paste          }
-  # - { key: Copy,                                        action: Copy           }
-  #- { key: L,         mods: Control,                    action: ClearLogNotice }
-  #- { key: L,         mods: Control, mode: ~Vi|~Search, chars: "\x0c"          }
-  #- { key: PageUp,    mods: Shift,   mode: ~Alt,        action: ScrollPageUp   }
-  #- { key: PageDown,  mods: Shift,   mode: ~Alt,        action: ScrollPageDown }
-  #- { key: Home,      mods: Shift,   mode: ~Alt,        action: ScrollToTop    }
-  #- { key: End,       mods: Shift,   mode: ~Alt,        action: ScrollToBottom }
-
-  # Vi Mode
-  #- { key: Space,  mods: Shift|Control, mode: ~Search,    action: ToggleViMode            }
-  - { key: Escape, mods: Shift, mode: ~Search, action: ToggleViMode }
-  #- { key: Space,  mods: Shift|Control, mode: Vi|~Search, action: ScrollToBottom          }
-  #- { key: Escape,                      mode: Vi|~Search, action: ClearSelection          }
-  #- { key: I,                           mode: Vi|~Search, action: ToggleViMode            }
-  #- { key: I,                           mode: Vi|~Search, action: ScrollToBottom          }
-  #- { key: C,      mods: Control,       mode: Vi|~Search, action: ToggleViMode            }
-  #- { key: Y,      mods: Control,       mode: Vi|~Search, action: ScrollLineUp            }
-  #- { key: E,      mods: Control,       mode: Vi|~Search, action: ScrollLineDown          }
-  #- { key: G,                           mode: Vi|~Search, action: ScrollToTop             }
-  #- { key: G,      mods: Shift,         mode: Vi|~Search, action: ScrollToBottom          }
-  #- { key: B,      mods: Control,       mode: Vi|~Search, action: ScrollPageUp            }
-  #- { key: F,      mods: Control,       mode: Vi|~Search, action: ScrollPageDown          }
-  #- { key: U,      mods: Control,       mode: Vi|~Search, action: ScrollHalfPageUp        }
-  #- { key: D,      mods: Control,       mode: Vi|~Search, action: ScrollHalfPageDown      }
-  #- { key: Y,                           mode: Vi|~Search, action: Copy                    }
-  #- { key: Y,                           mode: Vi|~Search, action: ClearSelection          }
-  #- { key: Copy,                        mode: Vi|~Search, action: ClearSelection          }
-  #- { key: V,                           mode: Vi|~Search, action: ToggleNormalSelection   }
-  #- { key: V,      mods: Shift,         mode: Vi|~Search, action: ToggleLineSelection     }
-  #- { key: V,      mods: Control,       mode: Vi|~Search, action: ToggleBlockSelection    }
-  #- { key: V,      mods: Alt,           mode: Vi|~Search, action: ToggleSemanticSelection }
-  #- { key: Return,                      mode: Vi|~Search, action: Open                    }
-  #- { key: Z,                           mode: Vi|~Search, action: CenterAroundViCursor    }
-  #- { key: K,                           mode: Vi|~Search, action: Up                      }
-  #- { key: J,                           mode: Vi|~Search, action: Down                    }
-  #- { key: H,                           mode: Vi|~Search, action: Left                    }
-  #- { key: L,                           mode: Vi|~Search, action: Right                   }
-  #- { key: Up,                          mode: Vi|~Search, action: Up                      }
-  #- { key: Down,                        mode: Vi|~Search, action: Down                    }
-  #- { key: Left,                        mode: Vi|~Search, action: Left                    }
-  #- { key: Right,                       mode: Vi|~Search, action: Right                   }
-  #- { key: Key0,                        mode: Vi|~Search, action: First                   }
-  #- { key: Key4,   mods: Shift,         mode: Vi|~Search, action: Last                    }
-  #- { key: Key6,   mods: Shift,         mode: Vi|~Search, action: FirstOccupied           }
-  #- { key: H,      mods: Shift,         mode: Vi|~Search, action: High                    }
-  #- { key: M,      mods: Shift,         mode: Vi|~Search, action: Middle                  }
-  #- { key: L,      mods: Shift,         mode: Vi|~Search, action: Low                     }
-  #- { key: B,                           mode: Vi|~Search, action: SemanticLeft            }
-  #- { key: W,                           mode: Vi|~Search, action: SemanticRight           }
-  #- { key: E,                           mode: Vi|~Search, action: SemanticRightEnd        }
-  #- { key: B,      mods: Shift,         mode: Vi|~Search, action: WordLeft                }
-  #- { key: W,      mods: Shift,         mode: Vi|~Search, action: WordRight               }
-  #- { key: E,      mods: Shift,         mode: Vi|~Search, action: WordRightEnd            }
-  #- { key: Key5,   mods: Shift,         mode: Vi|~Search, action: Bracket                 }
-  #- { key: Slash,                       mode: Vi|~Search, action: SearchForward           }
-  #- { key: Slash,  mods: Shift,         mode: Vi|~Search, action: SearchBackward          }
-  #- { key: N,                           mode: Vi|~Search, action: SearchNext              }
-  #- { key: N,      mods: Shift,         mode: Vi|~Search, action: SearchPrevious          }
-
-  # Search Mode
-  #- { key: Return,                mode: Search|Vi,  action: SearchConfirm         }
-  #- { key: Escape,                mode: Search,     action: SearchCancel          }
-  #- { key: C,      mods: Control, mode: Search,     action: SearchCancel          }
-  #- { key: U,      mods: Control, mode: Search,     action: SearchClear           }
-  #- { key: W,      mods: Control, mode: Search,     action: SearchDeleteWord      }
-  #- { key: P,      mods: Control, mode: Search,     action: SearchHistoryPrevious }
-  #- { key: N,      mods: Control, mode: Search,     action: SearchHistoryNext     }
-  #- { key: Up,                    mode: Search,     action: SearchHistoryPrevious }
-  #- { key: Down,                  mode: Search,     action: SearchHistoryNext     }
-  #- { key: Return,                mode: Search|~Vi, action: SearchFocusNext       }
-  #- { key: Return, mods: Shift,   mode: Search|~Vi, action: SearchFocusPrevious   }
-
-  # (Windows, Linux, and BSD only)
-  - { key: V,              mods: Control|Shift, mode: ~Vi,        action: Paste            }
-  - { key: C,              mods: Control|Shift,                   action: Copy             }
-    '';
-  };
 }
 
diff --git a/nix-conf/home-manager/home.nix b/nix-conf/home-manager/home.nix
index 77ec91a..6fc5db7 100644
--- a/nix-conf/home-manager/home.nix
+++ b/nix-conf/home-manager/home.nix
@@ -26,16 +26,16 @@ in
   };
   home.packages = pkgs.lib.unique ([
     # pkgs.ncdu
-    pkgs.rclone   # cloud file operations
-    pkgs.htop     # system diagnostics in CLI
-    pkgs.ripgrep  # content fuzzy search
-    pkgs.unzip    # compression
-    pkgs.zip      # compression
+    pkgs.rclone # cloud file operations
+    pkgs.htop # system diagnostics in CLI
+    pkgs.ripgrep # content fuzzy search
+    pkgs.unzip # compression
+    pkgs.zip # compression
 
     # cool utilities
-    pkgs.yq       # Yaml adaptor for jq (only pretty print, little query)
-    pkgs.xorg.xclock # TODO: only include if have gui # For testing GL installation
-    pkgs.logseq # TODO: only include if have GL # Obsidian alt
+    pkgs.yq # Yaml adaptor for jq (only pretty print, little query)
+    # pkgs.xorg.xclock # TODO: only include if have gui # For testing GL installation
+    # pkgs.logseq # TODO: only include if have GL # Obsidian alt
     pkgs.mosh # Parsec for SSH
     # pkgs.nixops_unstable # nixops v2 # insecure for now
     pkgs.lynx # Web browser at your local terminal
@@ -46,7 +46,9 @@ in
     # pkgs.python310.numpy
     # pkgs.python310Packages.tensorflow
     # pkgs.python310Packages.scikit-learn
-  ] ++ (myHome.packages or [ ]) 
+  ] ++ (myHome.packages or [ ]) ++ (if pkgs.system == "x86_64-linux" then [
+    pkgs.logseq
+  ] else [ ])
   );
 
   ## Configs ## 
diff --git a/nix-conf/home-manager/profiles/default.nix b/nix-conf/home-manager/profiles/default.nix
index 81bfa4b..1734c70 100644
--- a/nix-conf/home-manager/profiles/default.nix
+++ b/nix-conf/home-manager/profiles/default.nix
@@ -1,5 +1,5 @@
 # main module exporter for different configuration profiles
-{pkgs, libs,...} @ inputs:
+{ pkgs, libs, ... } @ inputs:
 {
-    hwtr = import ./hwtr.nix;
+  hwtr = import ./hwtr.nix;
 }
diff --git a/nix-conf/home-manager/profiles/hwtr.nix b/nix-conf/home-manager/profiles/hwtr.nix
index e69de29..8b13789 100644
--- a/nix-conf/home-manager/profiles/hwtr.nix
+++ b/nix-conf/home-manager/profiles/hwtr.nix
@@ -0,0 +1 @@
+
diff --git a/nix-conf/lib/default.nix b/nix-conf/lib/default.nix
index 27f412c..c7ec7d9 100644
--- a/nix-conf/lib/default.nix
+++ b/nix-conf/lib/default.nix
@@ -1,8 +1,10 @@
 { pkgs
 , lib ? pkgs.lib
-, ... }@flake_import:
-let serde = import ./serde { inherit pkgs lib; };
-    recursiveUpdate = lib.recursiveUpdate;
+, ...
+}@flake_import:
+let
+  serde = import ./serde { inherit pkgs lib; };
+  recursiveUpdate = lib.recursiveUpdate;
 in
 recursiveUpdate (recursiveUpdate pkgs.lib lib) {
   fromYaml = serde.fromYaml;
diff --git a/nix-conf/lib/serde/default.nix b/nix-conf/lib/serde/default.nix
index b29166b..b4c9299 100644
--- a/nix-conf/lib/serde/default.nix
+++ b/nix-conf/lib/serde/default.nix
@@ -4,7 +4,7 @@
 { pkgs
 , lib
 } @ inputs:
-let 
+let
   yamlToJsonDrv = yamlContent: outputPath: pkgs.callPackage
     ({ runCommand }:
       # runCommand source: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/trivial-builders.nix#L33
@@ -15,14 +15,16 @@ let
           echo "$yamlContent" | yq >$out
         '')
     { };
-in {
+in
+{
   # Takes in a yaml string and produces a derivation with translated JSON at $outputPath
   # similar to builtins.fromJSON, turns a YAML string to nix attrset
   fromYaml = yamlContent: builtins.fromJSON (builtins.readFile (yamlToJsonDrv yamlContent "any_output.json"));
   fromYamlPath = yamlPath: builtins.fromJSON (
     builtins.readFile (
-      yamlToJsonDrv (
-        builtins.readFile yamlPath) 
-      "any-output.json"));
+      yamlToJsonDrv
+        (
+          builtins.readFile yamlPath)
+        "any-output.json"));
   # TODO: fromToml?
 }
diff --git a/nix-conf/secrets.nix b/nix-conf/secrets.nix
index ad3c77c..0c5bf16 100644
--- a/nix-conf/secrets.nix
+++ b/nix-conf/secrets.nix
@@ -1,4 +1,4 @@
-let 
+let
   # user-specific (~/.ssh/id_ed25519.pub)
   users = {
     "hungtr@bao" = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK+1+gps6phbZboIb9fH51VNPUCkhSSOAbkI3tq3Ou0Z";
@@ -10,7 +10,8 @@ let
   all = users // systems;
   # stands for calculus
   c_ = builtins;
-in {
+in
+{
   "system/secrets/s3fs.age".publicKeys = c_.attrValues (all);
   "system/secrets/s3fs.digital-garden.age".publicKeys = c_.attrValues (all);
   "system/secrets/_nhitrl.age".publicKeys = c_.attrValues (all);
diff --git a/nix-conf/system/configuration.nix b/nix-conf/system/configuration.nix
index 7242c14..1ab2020 100755
--- a/nix-conf/system/configuration.nix
+++ b/nix-conf/system/configuration.nix
@@ -29,7 +29,7 @@ with lib;
     isNormalUser = true;
     home = "/home/hungtr";
     description = "pegasust/hungtr";
-    extraGroups = [ "wheel" "networkmanager" "audio"];
+    extraGroups = [ "wheel" "networkmanager" "audio" ];
   };
   users.users.root = {
     # openssh runs in root, no? This is because port < 1024 requires root.
diff --git a/nix-conf/system/flake.nix b/nix-conf/system/flake.nix
index ef79335..31f4dde 100644
--- a/nix-conf/system/flake.nix
+++ b/nix-conf/system/flake.nix
@@ -8,8 +8,8 @@
   };
 
   outputs = { self, nixpkgs, agenix, ... }:
-    let 
-      lib = nixpkgs.lib; 
+    let
+      lib = nixpkgs.lib;
       proj_root = ./../..;
       # TODO: Change respectively to the system or make a nix shell to alias `nix run github:ryantm/agenix -- `
       base_modules = [
@@ -27,10 +27,11 @@
           age.secrets._nhitrl_cred = {
             file = ./secrets/_nhitrl.age;
           };
-          environment.systemPackages = [agenix.defaultPackage.x86_64-linux];
+          environment.systemPackages = [ agenix.defaultPackage.x86_64-linux ];
         }
       ];
-    in {
+    in
+    {
       # Windows with NixOS WSL
       nixosConfigurations.Felia = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
@@ -206,163 +207,165 @@
       };
       nixosConfigurations.bao = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
-	      specialArgs.hostname = "bao";
+        specialArgs.hostname = "bao";
         modules = base_modules ++ [
           ./configuration.nix
           ./../../modules/storage.perso.sys.nix
           # GPU, sound, networking stuffs
           ({ config, pkgs, lib, ... }:
-          let
-            gpu_pkgs = [ pkgs.clinfo pkgs.lshw pkgs.glxinfo pkgs.pciutils pkgs.vulkan-tools ];
-            gpu_conf = {
-              # openCL
-              hardware.opengl = {
-                enable = true;
-                extraPackages = let 
-                  inherit (pkgs) rocm-opencl-icd rocm-opencl-runtime;
-                  in [rocm-opencl-icd rocm-opencl-runtime];
-                # Vulkan
-                driSupport = true;
-                driSupport32Bit = true;
-                package = pkgs.mesa.drivers;
-                package32 = pkgs.pkgsi686Linux.mesa.drivers;
+            let
+              gpu_pkgs = [ pkgs.clinfo pkgs.lshw pkgs.glxinfo pkgs.pciutils pkgs.vulkan-tools ];
+              gpu_conf = {
+                # openCL
+                hardware.opengl = {
+                  enable = true;
+                  extraPackages =
+                    let
+                      inherit (pkgs) rocm-opencl-icd rocm-opencl-runtime;
+                    in
+                    [ rocm-opencl-icd rocm-opencl-runtime ];
+                  # Vulkan
+                  driSupport = true;
+                  driSupport32Bit = true;
+                  package = pkgs.mesa.drivers;
+                  package32 = pkgs.pkgsi686Linux.mesa.drivers;
+                };
               };
-            };
-            amd_rx470 = {
-              # early amd gpu usage
-              # boot.initrd.kernelModules = ["amdgpu"];
+              amd_rx470 = {
+                # early amd gpu usage
+                boot.initrd.kernelModules = [ "amdgpu" ];
+                services.xserver.enable = true;
+                services.xserver.videoDrivers = [ "amdgpu" ];
+              };
+              nv_rtx3060 = {
+                nixpkgs.config.allowUnfree = true;
+                services.xserver.enable = true;
+                services.xserver.videoDrivers = [ "nvidia" ];
+                hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+              };
+              systemPackages = [ ] ++ gpu_pkgs;
+            in
+            lib.recursiveUpdate gpu_conf (lib.recursiveUpdate nv_rtx3060 {
+              # Use UEFI
+              boot.loader.systemd-boot.enable = true;
+
+              networking.hostName = "bao"; # Define your hostname.
+              # Pick only one of the below networking options.
+              # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+              networking.networkmanager.enable = true; # Easiest to use and most distros use this by default.
+
+              # Enable the X11 windowing system.
               services.xserver.enable = true;
-              services.xserver.videoDrivers = ["amdgpu"];
-            };
-            nv_rtx3060 = {
-              nixpkgs.config.allowUnfree = true;
-              services.xserver.enable = true;
-              services.xserver.videoDrivers = ["nvidia"];
-              hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
-            };
-            systemPackages = [] ++ gpu_pkgs;
-          in
-          lib.recursiveUpdate gpu_conf (lib.recursiveUpdate nv_rtx3060 {
-            # Use UEFI
-            boot.loader.systemd-boot.enable = true;
+              # KDE & Plasma 5
+              services.xserver.displayManager.sddm.enable = true;
+              services.xserver.desktopManager.plasma5 = {
+                enable = true;
+                excludePackages = let plasma5 = pkgs.libsForQt5; in [
+                  plasma5.elisa # audio viewer
+                  plasma5.konsole # I use alacritty instaed
+                  plasma5.plasma-browser-integration
+                  plasma5.print-manager # will enable if I need
+                  plasma5.khelpcenter # why not just write manpages instead :(
+                  # plasma5.ksshaskpass   # pls just put prompts on my dear terminal
+                ];
+              };
 
-            networking.hostName = "bao"; # Define your hostname.
-            # Pick only one of the below networking options.
-            # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-            networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
+              # disables KDE's setting of askpassword
+              programs.ssh.askPassword = "";
+              programs.ssh.enableAskPassword = false;
 
-            # Enable the X11 windowing system.
-            services.xserver.enable = true;
-            # KDE & Plasma 5
-            services.xserver.displayManager.sddm.enable = true;
-            services.xserver.desktopManager.plasma5 = {
-              enable = true;
-              excludePackages = let plasma5 = pkgs.libsForQt5; in [
-                plasma5.elisa       # audio viewer
-                plasma5.konsole     # I use alacritty instaed
-                plasma5.plasma-browser-integration
-                plasma5.print-manager # will enable if I need
-                plasma5.khelpcenter   # why not just write manpages instead :(
-                # plasma5.ksshaskpass   # pls just put prompts on my dear terminal
-              ];
-            };
-            
-            # disables KDE's setting of askpassword
-            programs.ssh.askPassword = "";  
-            programs.ssh.enableAskPassword = false;
+              time.timeZone = "America/Phoenix";
+              # Configure keymap in X11
+              services.xserver.layout = "us";
+              # services.xserver.xkbOptions = {
+              #   "eurosign:e";
+              #   "caps:escape" # map caps to escape.
+              # };
 
-            time.timeZone = "America/Phoenix";
-            # Configure keymap in X11
-            services.xserver.layout = "us";
-            # services.xserver.xkbOptions = {
-            #   "eurosign:e";
-            #   "caps:escape" # map caps to escape.
-            # };
+              # Enable CUPS to print documents.
+              # services.printing.enable = true;
 
-            # Enable CUPS to print documents.
-            # services.printing.enable = true;
+              # Enable sound. (pulse audio)
+              sound.enable = true;
+              programs.dconf.enable = true;
+              hardware.pulseaudio.enable = true;
+              hardware.pulseaudio.support32Bit = true;
+              nixpkgs.config.pulseaudio = true;
+              hardware.pulseaudio.extraConfig = "load-module module-combine-sink";
 
-            # Enable sound. (pulse audio)
-            sound.enable = true;
-            programs.dconf.enable = true;
-            hardware.pulseaudio.enable = true;
-            hardware.pulseaudio.support32Bit = true;
-            nixpkgs.config.pulseaudio = true;
-            hardware.pulseaudio.extraConfig = "load-module module-combine-sink";
-
-            # Sound: pipewire
-            # sound.enable = false;
-            # hardware.pulseaudio.enable = false;
-            # services.pipewire = {
-            #   enable = true;
-            #   alsa.enable = true;
-            #   alsa.support32Bit = true;
-            #   pulse.enable = true;
-            #   # Might want to use JACK in the future
-            #   jack.enable = true;
-            # };
-            #
-            # security.rtkit.enable = true;
+              # Sound: pipewire
+              # sound.enable = false;
+              # hardware.pulseaudio.enable = false;
+              # services.pipewire = {
+              #   enable = true;
+              #   alsa.enable = true;
+              #   alsa.support32Bit = true;
+              #   pulse.enable = true;
+              #   # Might want to use JACK in the future
+              #   jack.enable = true;
+              # };
+              #
+              # security.rtkit.enable = true;
 
 
-            # Enable touchpad support (enabled default in most desktopManager).
-            # services.xserver.libinput.enable = true;
+              # Enable touchpad support (enabled default in most desktopManager).
+              # services.xserver.libinput.enable = true;
 
-            # Define a user account. Don't forget to set a password with ‘passwd’.
-            # users.users.alice = {
-            #   isNormalUser = true;
-            #   extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
-            #   packages = with pkgs; [
-            #     firefox
-            #     thunderbird
-            #   ];
-            # };
-            # Just an initial user to get this started lol
-            users.users.user = {
-              initialPassword = "pw123";
-              extraGroups = [ "wheel" "networkmanager" "audio"];
-              isNormalUser = true;
-            };
+              # Define a user account. Don't forget to set a password with ‘passwd’.
+              # users.users.alice = {
+              #   isNormalUser = true;
+              #   extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
+              #   packages = with pkgs; [
+              #     firefox
+              #     thunderbird
+              #   ];
+              # };
+              # Just an initial user to get this started lol
+              users.users.user = {
+                initialPassword = "pw123";
+                extraGroups = [ "wheel" "networkmanager" "audio" ];
+                isNormalUser = true;
+              };
 
-            # List packages installed in system profile. To search, run:
-            # $ nix search wget
-            environment.systemPackages = with pkgs; [
-              neovim 
-              wget
-            ] ++ systemPackages;
+              # List packages installed in system profile. To search, run:
+              # $ nix search wget
+              environment.systemPackages = with pkgs; [
+                neovim
+                wget
+              ] ++ systemPackages;
 
-            # Some programs need SUID wrappers, can be configured further or are
-            # started in user sessions.
-            # programs.mtr.enable = true;
-            # programs.gnupg.agent = {
-            #   enable = true;
-            #   enableSSHSupport = true;
-            # };
+              # Some programs need SUID wrappers, can be configured further or are
+              # started in user sessions.
+              # programs.mtr.enable = true;
+              # programs.gnupg.agent = {
+              #   enable = true;
+              #   enableSSHSupport = true;
+              # };
 
-            # List services that you want to enable:
+              # List services that you want to enable:
 
-            # Enable the OpenSSH daemon.
-            services.openssh.enable = true;
+              # Enable the OpenSSH daemon.
+              services.openssh.enable = true;
 
-            # Open ports in the firewall.
-            # networking.firewall.allowedTCPPorts = [ ... ];
-            # networking.firewall.allowedUDPPorts = [ ... ];
-            # Or disable the firewall altogether.
-            # networking.firewall.enable = false;
+              # Open ports in the firewall.
+              # networking.firewall.allowedTCPPorts = [ ... ];
+              # networking.firewall.allowedUDPPorts = [ ... ];
+              # Or disable the firewall altogether.
+              # networking.firewall.enable = false;
 
-            # Copy the NixOS configuration file and link it from the resulting system
-            # (/run/current-system/configuration.nix). This is useful in case you
-            # accidentally delete configuration.nix.
-            # system.copySystemConfiguration = true;
+              # Copy the NixOS configuration file and link it from the resulting system
+              # (/run/current-system/configuration.nix). This is useful in case you
+              # accidentally delete configuration.nix.
+              # system.copySystemConfiguration = true;
 
-            # This value determines the NixOS release from which the default
-            # settings for stateful data, like file locations and database versions
-            # on your system were taken. It‘s perfectly fine and recommended to leave
-            # this value at the release version of the first install of this system.
-            # Before changing this value read the documentation for this option
-            # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-            system.stateVersion = "22.11"; # Did you read the comment?
-          }))
+              # This value determines the NixOS release from which the default
+              # settings for stateful data, like file locations and database versions
+              # on your system were taken. It‘s perfectly fine and recommended to leave
+              # this value at the release version of the first install of this system.
+              # Before changing this value read the documentation for this option
+              # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+              system.stateVersion = "22.11"; # Did you read the comment?
+            }))
         ];
       };
     };
diff --git a/nix-conf/system/hardware-configuration.nix b/nix-conf/system/hardware-configuration.nix
index aa59e37..e45b92a 100644
--- a/nix-conf/system/hardware-configuration.nix
+++ b/nix-conf/system/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    [
+      (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_scsi" "ahci" "sd_mod" ];
@@ -23,13 +24,13 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/sda";
+    {
+      device = "/dev/sda";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/sdb"; }
-    ];
+    [{ device = "/dev/sdb"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/nix-conf/system/profiles/bao/hardware-configuration.nix b/nix-conf/system/profiles/bao/hardware-configuration.nix
index c29572c..3d4935d 100644
--- a/nix-conf/system/profiles/bao/hardware-configuration.nix
+++ b/nix-conf/system/profiles/bao/hardware-configuration.nix
@@ -5,24 +5,27 @@
 
 {
   imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
   # boot.initrd.kernelModules = [ "amdgpu" ];
-  boot.initrd.kernelModules = [];
-  boot.kernelModules = [ "kvm-amd" "coretemp"];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" "coretemp" ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
     # Might be wise to use /dev/nvme0p1 instead
-    { device = "/dev/disk/by-uuid/27fc09b3-e3b7-4883-94a0-c313a0e0abe2";
+    {
+      device = "/dev/disk/by-uuid/27fc09b3-e3b7-4883-94a0-c313a0e0abe2";
       fsType = "ext4";
     };
 
   fileSystems."/boot" =
     # Might be wise to use /dev/nvme0p2 instead
-    { device = "/dev/disk/by-uuid/EBA6-394D";
+    {
+      device = "/dev/disk/by-uuid/EBA6-394D";
       fsType = "vfat";
     };
 
diff --git a/nix-conf/system/profiles/lester/hardware-configuration.nix b/nix-conf/system/profiles/lester/hardware-configuration.nix
index aa59e37..e45b92a 100644
--- a/nix-conf/system/profiles/lester/hardware-configuration.nix
+++ b/nix-conf/system/profiles/lester/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    [
+      (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_scsi" "ahci" "sd_mod" ];
@@ -23,13 +24,13 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/sda";
+    {
+      device = "/dev/sda";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/sdb"; }
-    ];
+    [{ device = "/dev/sdb"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/nix-conf/system/profiles/nyx/hardware-configuration.nix b/nix-conf/system/profiles/nyx/hardware-configuration.nix
index 36b63dd..88ffe66 100644
--- a/nix-conf/system/profiles/nyx/hardware-configuration.nix
+++ b/nix-conf/system/profiles/nyx/hardware-configuration.nix
@@ -5,7 +5,8 @@
 
 {
   imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    [
+      (modulesPath + "/profiles/qemu-guest.nix")
     ];
 
   boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_scsi" "ahci" "sd_mod" ];
@@ -13,7 +14,7 @@
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  boot.kernelParams = ["console=ttyS0,19200n8"];
+  boot.kernelParams = [ "console=ttyS0,19200n8" ];
   boot.loader.grub.extraConfig = ''
     serial --speed=19200 --unit=0 --word=8 --parity=no --stop=1
     terminal_input serial;
@@ -23,13 +24,13 @@
   boot.loader.grub.device = "nodev";
   boot.loader.timeout = 10;
   fileSystems."/" =
-    { device = "/dev/sda";
+    {
+      device = "/dev/sda";
       fsType = "ext4";
     };
 
   swapDevices =
-    [ { device = "/dev/sdb"; }
-    ];
+    [{ device = "/dev/sdb"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/nix-conf/system/profiles/prince/hardware-configuration.nix b/nix-conf/system/profiles/prince/hardware-configuration.nix
index e69de29..8b13789 100644
--- a/nix-conf/system/profiles/prince/hardware-configuration.nix
+++ b/nix-conf/system/profiles/prince/hardware-configuration.nix
@@ -0,0 +1 @@
+
diff --git a/out-of-tree/nixGL/all.nix b/out-of-tree/nixGL/all.nix
index 47fadc0..20d1862 100644
--- a/out-of-tree/nixGL/all.nix
+++ b/out-of-tree/nixGL/all.nix
@@ -20,6 +20,6 @@ let
     '';
   });
 in
-  (with pure; [nixGLIntel nixVulkanNvidia nixGLNvidia nixVulkanIntel])
-   ++ (with versionFile440.auto; [nixGLNvidia nixGLDefault nixVulkanNvidia])
-   ++ (with versionFile510.auto; [nixGLNvidia nixGLDefault nixVulkanNvidia])
+(with pure; [ nixGLIntel nixVulkanNvidia nixGLNvidia nixVulkanIntel ])
+++ (with versionFile440.auto; [ nixGLNvidia nixGLDefault nixVulkanNvidia ])
+++ (with versionFile510.auto; [ nixGLNvidia nixGLDefault nixVulkanNvidia ])
diff --git a/out-of-tree/nixGL/default.nix b/out-of-tree/nixGL/default.nix
index 9f232a5..3419421 100644
--- a/out-of-tree/nixGL/default.nix
+++ b/out-of-tree/nixGL/default.nix
@@ -1,24 +1,25 @@
-{ ## Nvidia informations.
+{
+  ## Nvidia informations.
   # Version of the system kernel module. Let it to null to enable auto-detection.
-  nvidiaVersion ? null,
-  # Hash of the Nvidia driver .run file. null is fine, but fixing a value here
+  nvidiaVersion ? null
+, # Hash of the Nvidia driver .run file. null is fine, but fixing a value here
   # will be more reproducible and more efficient.
-  nvidiaHash ? null,
-  # Alternatively, you can pass a path that points to a nvidia version file
+  nvidiaHash ? null
+, # Alternatively, you can pass a path that points to a nvidia version file
   # and let nixGL extract the version from it. That file must be a copy of
   # /proc/driver/nvidia/version. Nix doesn't like zero-sized files (see
   # https://github.com/NixOS/nix/issues/3539 ).
-  nvidiaVersionFile ? null,
-  # Enable 32 bits driver
+  nvidiaVersionFile ? null
+, # Enable 32 bits driver
   # This is on by default, you can switch it to off if you want to reduce a
   # bit the size of nixGL closure.
-  enable32bits ? true,
-  # Make sure to enable config.allowUnfree to the instance of nixpkgs to be
+  enable32bits ? true
+, # Make sure to enable config.allowUnfree to the instance of nixpkgs to be
   # able to access the nvidia drivers.
   pkgs ? import <nixpkgs> {
     config = { allowUnfree = true; };
-  },
-  # Enable all Intel specific extensions which only works on x86_64
+  }
+, # Enable all Intel specific extensions which only works on x86_64
   enableIntelX86Extensions ? true
 }:
 pkgs.callPackage ./nixGL.nix ({
@@ -28,8 +29,8 @@ pkgs.callPackage ./nixGL.nix ({
     nvidiaHash
     enable32bits
     ;
-  } // (if enableIntelX86Extensions then {}
-  else {
-    intel-media-driver = null;
-    vaapiIntel = null;
-  }))
+} // (if enableIntelX86Extensions then { }
+else {
+  intel-media-driver = null;
+  vaapiIntel = null;
+}))
diff --git a/out-of-tree/nixGL/fetch.py b/out-of-tree/nixGL/fetch.py
new file mode 100755
index 0000000..11d0e3e
--- /dev/null
+++ b/out-of-tree/nixGL/fetch.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+import urllib3
+import json
+
+http = urllib3.PoolManager()
+dl_dir = http.request("GET", "https://download.nvidia.com/XFree86/Linux-x86_64/")
+
+# print(f"{dl_dir.status=}\n{dl_dir.data=}")
+
+assert (dl_dir.status < 400), "Error probably occurred"
+
+def find_versions(dir_html: bytes) -> list[str]:
+    # this algorithm obviously need recursion because we need to discover the items
+    def _rec(dir_html: bytes, start: int = 0, so_far: list[str] = []) -> list[str]:
+        MATCH_START = b"<span class=\'dir\'><a href=\'"
+        potential_start = dir_html.find(MATCH_START, start)
+        if potential_start == -1:
+            return so_far
+        # check that it starts with a number
+        potential_version_start = potential_start + len(MATCH_START)
+        p = potential_version_start
+        if not (dir_html[p: p+1].decode().isnumeric()):
+            return _rec(dir_html, potential_version_start, so_far)
+
+        # this thing matches, add to so_far and continue
+        version_end = dir_html.find(b"/", potential_version_start)
+        assert version_end != -1, "There should be matching /"
+        so_far.append(dir_html[potential_version_start:version_end].decode())
+        return _rec(dir_html, version_end, so_far)
+    return _rec(dir_html, 0, [])
+    
+versions = find_versions(dl_dir.data)
+# print("\n".join(versions))
+
+download_urls = lambda ver: [f"https://download.nvidia.com/XFree86/Linux-x86_64/{ver}/NVIDIA-Linux-x86_64-{ver}.run"]
+sha256_urls = lambda ver: [f"{url}{dl_ext}" for dl_ext in [".sha256sum", ".sha256"] for url in download_urls(ver)]
+def req_monad(url: str, err_fn, then_fn):
+    res = http.request("GET", url)
+    if res.status >= 400:
+        return err_fn(res.status)
+    return then_fn(res.data)
+
+identity = lambda e: e
+none_id = lambda _: None
+
+def get_sha256(version: str) -> str | None:
+    for url in sha256_urls(version):
+        res = http.request("GET", url)
+        # print(f"attempting: {url}")
+        if res.status < 400:
+            return res.data.decode().split()[0]
+    return None
+fetch_data = [(v, download_urls(v)[0], get_sha256(v)) for v in versions]
+fetch_data.append(("latest", *fetch_data[-1][1:]))
+
+# print(fetch_data)
+
+# now print the JSON object
+print(json.dumps({
+    version: {
+        "url": dl_url, 
+        "sha256": sha256
+    } for (version, dl_url, sha256) in fetch_data if sha256 is not None}, indent=4))
+# execution: fetch.py >nvidia_versions.json
+
diff --git a/out-of-tree/nixGL/flake.nix b/out-of-tree/nixGL/flake.nix
index cc1b625..bbb7c43 100644
--- a/out-of-tree/nixGL/flake.nix
+++ b/out-of-tree/nixGL/flake.nix
@@ -8,12 +8,14 @@
     (flake-utils.lib.eachDefaultSystem (system:
       let
         isIntelX86Platform = system == "x86_64-linux";
+        nix_pkgs = import nixpkgs { inherit system; };
         pkgs = import ./default.nix {
-          pkgs = nixpkgs.legacyPackages.${system};
+          pkgs = nix_pkgs;
           enable32bits = isIntelX86Platform;
           enableIntelX86Extensions = isIntelX86Platform;
         };
-      in rec {
+      in
+      rec {
 
         packages = {
           # makes it easy to use "nix run nixGL --impure -- program"
@@ -30,16 +32,16 @@
         # deprecated attributes for retro compatibility
         defaultPackage = packages;
       })) // rec {
-        # deprecated attributes for retro compatibility
-        overlay = overlays.default;
-        overlays.default = final: _:
-          let isIntelX86Platform = final.system == "x86_64-linux";
-          in {
-            nixgl = import ./default.nix {
-              pkgs = final;
-              enable32bits = isIntelX86Platform;
-              enableIntelX86Extensions = isIntelX86Platform;
-            };
+      # deprecated attributes for retro compatibility
+      overlay = overlays.default;
+      overlays.default = final: _:
+        let isIntelX86Platform = final.system == "x86_64-linux";
+        in {
+          nixgl = import ./default.nix {
+            pkgs = final;
+            enable32bits = isIntelX86Platform;
+            enableIntelX86Extensions = isIntelX86Platform;
           };
-      };
+        };
+    };
 }
diff --git a/out-of-tree/nixGL/nixGL.nix b/out-of-tree/nixGL/nixGL.nix
index cc80cda..fa74b0c 100644
--- a/out-of-tree/nixGL/nixGL.nix
+++ b/out-of-tree/nixGL/nixGL.nix
@@ -1,22 +1,42 @@
-{ # # Nvidia informations.
-# Version of the system kernel module. Let it to null to enable auto-detection.
-nvidiaVersion ? null,
-# Hash of the Nvidia driver .run file. null is fine, but fixing a value here
-# will be more reproducible and more efficient.
-nvidiaHash ? null,
-# Alternatively, you can pass a path that points to a nvidia version file
-# and let nixGL extract the version from it. That file must be a copy of
-# /proc/driver/nvidia/version. Nix doesn't like zero-sized files (see
-# https://github.com/NixOS/nix/issues/3539 ).
-nvidiaVersionFile ? null,
-# Enable 32 bits driver
-# This is one by default, you can switch it to off if you want to reduce a
-# bit the size of nixGL closure.
-enable32bits ? true
-, writeTextFile, shellcheck, pcre, runCommand, linuxPackages
-, fetchurl, lib, runtimeShell, bumblebee, libglvnd, vulkan-validation-layers
-, mesa, libvdpau-va-gl, intel-media-driver, vaapiIntel, pkgsi686Linux, driversi686Linux
-, zlib, libdrm, xorg, wayland, gcc }:
+{
+  # # Nvidia informations.
+  # Version of the system kernel module. Let it to null to enable auto-detection.
+  nvidiaVersion ? null
+, # Hash of the Nvidia driver .run file. null is fine, but fixing a value here
+  # will be more reproducible and more efficient.
+  nvidiaHash ? null
+, # Alternatively, you can pass a path that points to a nvidia version file
+  # and let nixGL extract the version from it. That file must be a copy of
+  # /proc/driver/nvidia/version. Nix doesn't like zero-sized files (see
+  # https://github.com/NixOS/nix/issues/3539 ).
+  nvidiaVersionFile ? null
+, # Enable 32 bits driver
+  # This is one by default, you can switch it to off if you want to reduce a
+  # bit the size of nixGL closure.
+  enable32bits ? true
+, writeTextFile
+, shellcheck
+, pcre
+, runCommand
+, linuxPackages
+, fetchurl
+, lib
+, runtimeShell
+, bumblebee
+, libglvnd
+, vulkan-validation-layers
+, mesa
+, libvdpau-va-gl
+, intel-media-driver
+, vaapiIntel
+, pkgsi686Linux
+, driversi686Linux
+, zlib
+, libdrm
+, xorg
+, wayland
+, gcc
+}:
 
 let
   writeExecutable = { name, text }:
@@ -36,162 +56,173 @@ let
         done
       '';
     };
+  fetch_db = builtins.fromJSON (builtins.readFile ./nvidia_versions.json);
   top = rec {
     /*
-    It contains the builder for different nvidia configuration, parametrized by
-    the version of the driver and sha256 sum of the driver installer file.
+      It contains the builder for different nvidia configuration, parametrized by
+      the version of the driver and sha256 sum of the driver installer file.
     */
-    nvidiaPackages = { version, sha256 ? null }: rec {
-      nvidiaDrivers = (linuxPackages.nvidia_x11.override { }).overrideAttrs
-        (oldAttrs: rec {
-          pname = "nvidia";
-          name = "nvidia-x11-${version}-nixGL";
-          inherit version;
-          src = let
-            url =
-              "https://download.nvidia.com/XFree86/Linux-x86_64/${version}/NVIDIA-Linux-x86_64-${version}.run";
-          in if sha256 != null then
-            fetchurl { inherit url sha256; }
-          else
-            builtins.fetchurl url;
-          useGLVND = true;
-        });
+    nvidiaPackages = { version, sha256 ? fetch_db."${version}".sha256 }:
+      let
+        nvidiaDrivers = (linuxPackages.nvidia_x11.override { }).overrideAttrs
+          (oldAttrs: {
+            pname = "nvidia";
+            name = "nvidia-x11-${version}-nixGL";
+            inherit version;
+            src =
+              let
+                url =
+                  "https://download.nvidia.com/XFree86/Linux-x86_64/${version}/NVIDIA-Linux-x86_64-${version}.run";
+              in
+              fetchurl { inherit url sha256; };
+            useGLVND = true;
+          });
+        nvidiaLibsOnly = nvidiaDrivers.override {
+          libsOnly = true;
+          kernel = null;
+        };
+        nixNvidiaWrapper = api:
+          writeExecutable {
+            name = "nix${api}Nvidia-${version}";
+            text = ''
+              #!${runtimeShell}
+              ${lib.optionalString (api == "Vulkan")
+              "export VK_LAYER_PATH=${vulkan-validation-layers}/share/vulkan/explicit_layer.d"}
+              NVIDIA_JSON=(${nvidiaLibsOnly}/share/glvnd/egl_vendor.d/*nvidia.json)
+              ${lib.optionalString enable32bits "NVIDIA_JSON32=(${nvidiaLibsOnly.lib32}/share/glvnd/egl_vendor.d/*nvidia.json)"}
 
-      nvidiaLibsOnly = nvidiaDrivers.override {
-        libsOnly = true;
-        kernel = null;
-      };
+              ${''export __EGL_VENDOR_LIBRARY_FILENAMES=''${NVIDIA_JSON[*]}${
+                lib.optionalString enable32bits
+                '':''${NVIDIA_JSON32[*]}''
+                }"''${__EGL_VENDOR_LIBRARY_FILENAMES:+:$__EGL_VENDOR_LIBRARY_FILENAMES}"''
+              }
 
-      nixGLNvidiaBumblebee = writeExecutable {
-        name = "nixGLNvidiaBumblebee-${version}";
-        text = ''
-          #!${runtimeShell}
-          export LD_LIBRARY_PATH=${
-            lib.makeLibraryPath [ nvidiaDrivers ]
-          }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
-          ${
-            bumblebee.override {
-              nvidia_x11 = nvidiaDrivers;
-              nvidia_x11_i686 = nvidiaDrivers.lib32;
-            }
-          }/bin/optirun --ldpath ${
-            lib.makeLibraryPath ([ libglvnd nvidiaDrivers ]
-              ++ lib.optionals enable32bits [
-                nvidiaDrivers.lib32
-                pkgsi686Linux.libglvnd
-              ])
-          } "$@"
-        '';
-      };
+                ${
+                  lib.optionalString (api == "Vulkan")
+                  ''export VK_ICD_FILENAMES=${nvidiaLibsOnly}/share/vulkan/icd.d/nvidia_icd.json${
+                    lib.optionalString enable32bits
+                    ":${nvidiaLibsOnly.lib32}/share/vulkan/icd.d/nvidia_icd.json"
+                  }"''${VK_ICD_FILENAMES:+:$VK_ICD_FILENAMES}"''
+                }
+                export LD_LIBRARY_PATH=${
+                  lib.makeLibraryPath ([ libglvnd nvidiaLibsOnly ]
+                    ++ lib.optional (api == "Vulkan") vulkan-validation-layers
+                    ++ lib.optionals enable32bits [
+                      nvidiaLibsOnly.lib32
+                      pkgsi686Linux.libglvnd
+                    ])
+                }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
+                exec "$@"
+            '';
+          };
+      in
+      {
+        inherit nvidiaDrivers nvidiaLibsOnly;
 
-      # TODO: 32bit version? Not tested.
-      nixNvidiaWrapper = api:
-        writeExecutable {
-          name = "nix${api}Nvidia-${version}";
+        nixGLNvidiaBumblebee = writeExecutable {
+          name = "nixGLNvidiaBumblebee-${version}";
           text = ''
             #!${runtimeShell}
-            ${lib.optionalString (api == "Vulkan")
-            "export VK_LAYER_PATH=${vulkan-validation-layers}/share/vulkan/explicit_layer.d"}
-            NVIDIA_JSON=(${nvidiaLibsOnly}/share/glvnd/egl_vendor.d/*nvidia.json)
-            ${lib.optionalString enable32bits "NVIDIA_JSON32=(${nvidiaLibsOnly.lib32}/share/glvnd/egl_vendor.d/*nvidia.json)"}
-
-            ${''export __EGL_VENDOR_LIBRARY_FILENAMES=''${NVIDIA_JSON[*]}${
-              lib.optionalString enable32bits
-              '':''${NVIDIA_JSON32[*]}''
-              }"''${__EGL_VENDOR_LIBRARY_FILENAMES:+:$__EGL_VENDOR_LIBRARY_FILENAMES}"''
-            }
-
-              ${
-                lib.optionalString (api == "Vulkan")
-                ''export VK_ICD_FILENAMES=${nvidiaLibsOnly}/share/vulkan/icd.d/nvidia_icd.json${
-                  lib.optionalString enable32bits
-                  ":${nvidiaLibsOnly.lib32}/share/vulkan/icd.d/nvidia_icd.json"
-                }"''${VK_ICD_FILENAMES:+:$VK_ICD_FILENAMES}"''
+            export LD_LIBRARY_PATH=${
+              lib.makeLibraryPath [ nvidiaDrivers ]
+            }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
+            ${
+              bumblebee.override {
+                nvidia_x11 = nvidiaDrivers;
+                nvidia_x11_i686 = nvidiaDrivers.lib32;
               }
-              export LD_LIBRARY_PATH=${
-                lib.makeLibraryPath ([ libglvnd nvidiaLibsOnly ]
-                  ++ lib.optional (api == "Vulkan") vulkan-validation-layers
-                  ++ lib.optionals enable32bits [
-                    nvidiaLibsOnly.lib32
-                    pkgsi686Linux.libglvnd
-                  ])
-              }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
-              exec "$@"
+            }/bin/optirun --ldpath ${
+              lib.makeLibraryPath ([ libglvnd nvidiaDrivers ]
+                ++ lib.optionals enable32bits [
+                  nvidiaDrivers.lib32
+                  pkgsi686Linux.libglvnd
+                ])
+            } "$@"
           '';
         };
 
-      # TODO: 32bit version? Not tested.
-      nixGLNvidia = nixNvidiaWrapper "GL";
+        # TODO: 32bit version? Not tested.
+        inherit nixNvidiaWrapper;
 
-      # TODO: 32bit version? Not tested.
-      nixVulkanNvidia = nixNvidiaWrapper "Vulkan";
-    };
+        # TODO: 32bit version? Not tested.
+        nixGLNvidia = nixNvidiaWrapper "GL";
+
+        # TODO: 32bit version? Not tested.
+        nixVulkanNvidia = nixNvidiaWrapper "Vulkan";
+      };
 
     nixGLIntel = writeExecutable {
       name = "nixGLIntel";
       # add the 32 bits drivers if needed
-      text = let
-        mesa-drivers = [ mesa.drivers ]
-          ++ lib.optional enable32bits pkgsi686Linux.mesa.drivers;
-        intel-driver = [ intel-media-driver vaapiIntel ]
-          # Note: intel-media-driver is disabled for i686 until https://github.com/NixOS/nixpkgs/issues/140471 is fixed
-          ++ lib.optionals enable32bits [ /* pkgsi686Linux.intel-media-driver */ driversi686Linux.vaapiIntel ];
-        libvdpau = [ libvdpau-va-gl ]
-          ++ lib.optional enable32bits pkgsi686Linux.libvdpau-va-gl;
-        glxindirect = runCommand "mesa_glxindirect" { } (''
-          mkdir -p $out/lib
-          ln -s ${mesa.drivers}/lib/libGLX_mesa.so.0 $out/lib/libGLX_indirect.so.0
-        '');
-      in ''
-        #!${runtimeShell}
-        export LIBGL_DRIVERS_PATH=${lib.makeSearchPathOutput "lib" "lib/dri" mesa-drivers}
-        export LIBVA_DRIVERS_PATH=${lib.makeSearchPathOutput "out" "lib/dri" intel-driver}
-        ${''export __EGL_VENDOR_LIBRARY_FILENAMES=${mesa.drivers}/share/glvnd/egl_vendor.d/50_mesa.json${
-          lib.optionalString enable32bits
-          ":${pkgsi686Linux.mesa.drivers}/share/glvnd/egl_vendor.d/50_mesa.json"
-          }"''${__EGL_VENDOR_LIBRARY_FILENAMES:+:$__EGL_VENDOR_LIBRARY_FILENAMES}"''
-        }
-        export LD_LIBRARY_PATH=${lib.makeLibraryPath mesa-drivers}:${lib.makeSearchPathOutput "lib" "lib/vdpau" libvdpau}:${glxindirect}/lib:${lib.makeLibraryPath [libglvnd]}"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
-        exec "$@"
-      '';
+      text =
+        let
+          mesa-drivers = [ mesa.drivers ]
+            ++ lib.optional enable32bits pkgsi686Linux.mesa.drivers;
+          intel-driver = [ intel-media-driver vaapiIntel ]
+            # Note: intel-media-driver is disabled for i686 until https://github.com/NixOS/nixpkgs/issues/140471 is fixed
+            ++ lib.optionals enable32bits [ /* pkgsi686Linux.intel-media-driver */ driversi686Linux.vaapiIntel ];
+          libvdpau = [ libvdpau-va-gl ]
+            ++ lib.optional enable32bits pkgsi686Linux.libvdpau-va-gl;
+          glxindirect = runCommand "mesa_glxindirect" { } (
+            ''
+              mkdir -p $out/lib
+              ln -s ${mesa.drivers}/lib/libGLX_mesa.so.0 $out/lib/libGLX_indirect.so.0
+            ''
+          );
+        in
+        ''
+          #!${runtimeShell}
+          export LIBGL_DRIVERS_PATH=${lib.makeSearchPathOutput "lib" "lib/dri" mesa-drivers}
+          export LIBVA_DRIVERS_PATH=${lib.makeSearchPathOutput "out" "lib/dri" intel-driver}
+          ${''export __EGL_VENDOR_LIBRARY_FILENAMES=${mesa.drivers}/share/glvnd/egl_vendor.d/50_mesa.json${
+            lib.optionalString enable32bits
+            ":${pkgsi686Linux.mesa.drivers}/share/glvnd/egl_vendor.d/50_mesa.json"
+            }"''${__EGL_VENDOR_LIBRARY_FILENAMES:+:$__EGL_VENDOR_LIBRARY_FILENAMES}"''
+          }
+          export LD_LIBRARY_PATH=${lib.makeLibraryPath mesa-drivers}:${lib.makeSearchPathOutput "lib" "lib/vdpau" libvdpau}:${glxindirect}/lib:${lib.makeLibraryPath [libglvnd]}"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
+          exec "$@"
+        '';
     };
 
     nixVulkanIntel = writeExecutable {
       name = "nixVulkanIntel";
-      text = let
-        # generate a file with the listing of all the icd files
-        icd = runCommand "mesa_icd" { } (
-          # 64 bits icd
-          ''
-            ls ${mesa.drivers}/share/vulkan/icd.d/*.json > f
-          ''
-          #  32 bits ones
-          + lib.optionalString enable32bits ''
-            ls ${pkgsi686Linux.mesa.drivers}/share/vulkan/icd.d/*.json >> f
-          ''
-          # concat everything as a one line string with ":" as seperator
-          + ''cat f | xargs | sed "s/ /:/g" > $out'');
-      in ''
-        #!${runtimeShell}
-        if [ -n "$LD_LIBRARY_PATH" ]; then
-          echo "Warning, nixVulkanIntel overwriting existing LD_LIBRARY_PATH" 1>&2
-        fi
-        export VK_LAYER_PATH=${vulkan-validation-layers}/share/vulkan/explicit_layer.d
-        ICDS=$(cat ${icd})
-        export VK_ICD_FILENAMES=$ICDS"''${VK_ICD_FILENAMES:+:$VK_ICD_FILENAMES}"
-        export LD_LIBRARY_PATH=${
-          lib.makeLibraryPath [
-            zlib
-            libdrm
-            xorg.libX11
-            xorg.libxcb
-            xorg.libxshmfence
-            wayland
-            gcc.cc
-          ]
-        }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
-        exec "$@"
-      '';
+      text =
+        let
+          # generate a file with the listing of all the icd files
+          icd = runCommand "mesa_icd" { } (
+            # 64 bits icd
+            ''
+              ls ${mesa.drivers}/share/vulkan/icd.d/*.json > f
+            ''
+            #  32 bits ones
+            + lib.optionalString enable32bits ''
+              ls ${pkgsi686Linux.mesa.drivers}/share/vulkan/icd.d/*.json >> f
+            ''
+            # concat everything as a one line string with ":" as seperator
+            + ''cat f | xargs | sed "s/ /:/g" > $out''
+          );
+        in
+        ''
+          #!${runtimeShell}
+          if [ -n "$LD_LIBRARY_PATH" ]; then
+            echo "Warning, nixVulkanIntel overwriting existing LD_LIBRARY_PATH" 1>&2
+          fi
+          export VK_LAYER_PATH=${vulkan-validation-layers}/share/vulkan/explicit_layer.d
+          ICDS=$(cat ${icd})
+          export VK_ICD_FILENAMES=$ICDS"''${VK_ICD_FILENAMES:+:$VK_ICD_FILENAMES}"
+          export LD_LIBRARY_PATH=${
+            lib.makeLibraryPath [
+              zlib
+              libdrm
+              xorg.libX11
+              xorg.libxcb
+              xorg.libxshmfence
+              wayland
+              gcc.cc
+            ]
+          }"''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
+          exec "$@"
+        '';
     };
 
     nixGLCommon = nixGL:
@@ -201,48 +232,57 @@ let
         cp ${nixGL}/bin/* "$out/bin/nixGL";
       '';
 
-    auto = let
-      _nvidiaVersionFile = if nvidiaVersionFile != null then
-        nvidiaVersionFile
-      else
-      # HACK: Get the version from /proc. It turns out that /proc is mounted
-      # inside of the build sandbox and varies from machine to machine.
-      #
-      # builtins.readFile is not able to read /proc files. See
-      # https://github.com/NixOS/nix/issues/3539.
-        runCommand "impure-nvidia-version-file" {
-          # To avoid sharing the build result over time or between machine,
-          # Add an impure parameter to force the rebuild on each access.
-          # time = builtins.currentTime;
-          preferLocalBuild = true;
-          allowSubstitutes = false;
-        } "cp /proc/driver/nvidia/version $out 2> /dev/null || touch $out";
+    auto =
+      let
+        _nvidiaVersionFile =
+          if nvidiaVersionFile != null then
+            nvidiaVersionFile
+          else
+          # HACK: Get the version from /proc. It turns out that /proc is mounted
+          # inside of the build sandbox and varies from machine to machine.
+          #
+          # builtins.readFile is not able to read /proc files. See
+          # https://github.com/NixOS/nix/issues/3539.
+            runCommand "impure-nvidia-version-file"
+              {
+                # To avoid sharing the build result over time or between machine,
+                # Add an impure parameter to force the rebuild on each access.
+                # time = builtins.currentTime;
+                preferLocalBuild = true;
+                allowSubstitutes = false;
+              } "cp /proc/driver/nvidia/version $out 2> /dev/null || touch $out";
 
-      # The nvidia version. Either fixed by the `nvidiaVersion` argument, or
-      # auto-detected. Auto-detection is impure.
-      nvidiaVersionAuto = if nvidiaVersion != null then
-        nvidiaVersion
-      else
-      # Get if from the nvidiaVersionFile
-        let
-          data = builtins.readFile _nvidiaVersionFile;
-          versionMatch = builtins.match ".*Module  ([0-9.]+)  .*" data;
-        in if versionMatch != null then builtins.head versionMatch else null;
+        # The nvidia version. Either fixed by the `nvidiaVersion` argument, or
+        # auto-detected. Auto-detection is impure.
+        nvidiaVersionAuto =
+          if nvidiaVersion != null then
+            nvidiaVersion
+          else
+          # Get if from the nvidiaVersionFile
+            let
+              data = builtins.readFile _nvidiaVersionFile;
+              versionMatch = builtins.match ".*Module  ([0-9.]+)  .*" data;
+            in
+            if versionMatch != null then builtins.head versionMatch else null;
 
-      autoNvidia = nvidiaPackages {version = nvidiaVersionAuto; };
-    in rec {
-      # The output derivation contains nixGL which point either to
-      # nixGLNvidia or nixGLIntel using an heuristic.
-      nixGLDefault = if nvidiaVersionAuto != null then
-        nixGLCommon autoNvidia.nixGLNvidia
-      else
-        nixGLCommon nixGLIntel;
-    } // autoNvidia;
+        autoNvidia = nvidiaPackages { version = nvidiaVersionAuto; };
+      in
+      rec {
+        # The output derivation contains nixGL which point either to
+        # nixGLNvidia or nixGLIntel using an heuristic.
+        nixGLDefault =
+          if nvidiaVersionAuto != null then
+            nixGLCommon autoNvidia.nixGLNvidia
+          else
+            nixGLCommon nixGLIntel;
+      } // autoNvidia;
   };
-in top // (if nvidiaVersion != null then
-  top.nvidiaPackages {
-    version = nvidiaVersion;
-    sha256 = nvidiaHash;
-  }
+in
+top // (if nvidiaVersion != null then
+  top.nvidiaPackages
+    {
+      version = nvidiaVersion;
+      sha256 = nvidiaHash;
+    }
 else
   { })
diff --git a/out-of-tree/nixGL/nixpkgs.nix b/out-of-tree/nixGL/nixpkgs.nix
index dfede53..a4e1b5b 100644
--- a/out-of-tree/nixGL/nixpkgs.nix
+++ b/out-of-tree/nixGL/nixpkgs.nix
@@ -3,4 +3,5 @@ let
 in
 import (fetchTarball {
   url = "https://github.com/nixos/nixpkgs/archive/${rev}.tar.gz";
+  sha256 = "14sm0bjjcmi9qmznwy3nkd2vbhj5xcshgm54a5wiprl9ssvxqw53";
 })
diff --git a/out-of-tree/nixGL/nvidia_versions.json b/out-of-tree/nixGL/nvidia_versions.json
new file mode 100644
index 0000000..0241076
--- /dev/null
+++ b/out-of-tree/nixGL/nvidia_versions.json
@@ -0,0 +1,570 @@
+{
+    "256.25": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.25/NVIDIA-Linux-x86_64-256.25.run",
+        "sha256": "a93e4de6df8336741ace5a4bd2bc80b3b0b0ebde8c31003671af91bc44db61d3"
+    },
+    "256.29": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.29/NVIDIA-Linux-x86_64-256.29.run",
+        "sha256": "e387780b265e9eec2f68295f7f08dab0238c87426e9968d8dd9d02d6ff023da3"
+    },
+    "256.35": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.35/NVIDIA-Linux-x86_64-256.35.run",
+        "sha256": "ef10ecddd8db11f0fa3c6e4727dc275eb0ca9d23a7b7d37a038d17d2a42acb2a"
+    },
+    "256.38.02": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.38.02/NVIDIA-Linux-x86_64-256.38.02.run",
+        "sha256": "c3c9c60932830a648034b98f38910058df339a84ad5998adc8df19c697fd6663"
+    },
+    "256.38.03": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.38.03/NVIDIA-Linux-x86_64-256.38.03.run",
+        "sha256": "0dcb0098e294d5b89f57b8100f6af660225310ba48b4298a2ac79bb19cc8ca7c"
+    },
+    "256.44": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.44/NVIDIA-Linux-x86_64-256.44.run",
+        "sha256": "528aaed18b6b4ba79dbf4ae5c5ecda8350007d610d2c7c608eb646739cfeb500"
+    },
+    "256.52": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.52/NVIDIA-Linux-x86_64-256.52.run",
+        "sha256": "3ab713f969fe7cf0d7ccfdfee2863c92ea96d1eb5bf3f734b3a1e5b37c2611c8"
+    },
+    "256.53": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/256.53/NVIDIA-Linux-x86_64-256.53.run",
+        "sha256": "febee3eb128e1d62565fccb3ad1577f741c4bf067072e45e7766ab999aa590c9"
+    },
+    "260.19.04": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.04/NVIDIA-Linux-x86_64-260.19.04.run",
+        "sha256": "09391b63daa6bc08ea520c28295a8535b83710f8ba48d01778bf7fe22d095485"
+    },
+    "260.19.06": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.06/NVIDIA-Linux-x86_64-260.19.06.run",
+        "sha256": "ecd3e2113fbf9dd7e167c737d3b4490dd653b49b70ead62c194635ffc3fd4d00"
+    },
+    "260.19.12": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.12/NVIDIA-Linux-x86_64-260.19.12.run",
+        "sha256": "7cc90b5bd402742167a1647d0d92aa997af4184da614c2ca882afb2f2e48eb7e"
+    },
+    "260.19.21": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.21/NVIDIA-Linux-x86_64-260.19.21.run",
+        "sha256": "bf80147e94ab4c86dffe4529635e5f5b0caff5f6758a068d0e2d95ee466d2214"
+    },
+    "260.19.26": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.26/NVIDIA-Linux-x86_64-260.19.26.run",
+        "sha256": "78ce4e3344ee15330708054b5c3ceabb96aabaa1194a9bc92cee9559c7cd3c9f"
+    },
+    "260.19.29": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.29/NVIDIA-Linux-x86_64-260.19.29.run",
+        "sha256": "09461a1eb6f46b394e9a2cfef20448311a395c3969521881b334c413715174eb"
+    },
+    "260.19.36": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.36/NVIDIA-Linux-x86_64-260.19.36.run",
+        "sha256": "35a8769585e1f9b426c9c21b5f5898c06251a642ed73e9fb9eea9ab87ef91067"
+    },
+    "260.19.44": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/260.19.44/NVIDIA-Linux-x86_64-260.19.44.run",
+        "sha256": "8526267407d71b1257e43abc2b98e588c8d271e30584a754b8b8ef426cc69c64"
+    },
+    "270.18": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/270.18/NVIDIA-Linux-x86_64-270.18.run",
+        "sha256": "b10af40db402f9f8e6a3a5a55b2385a06e2b8b14c8fc539624b07c63d70bef32"
+    },
+    "270.26": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/270.26/NVIDIA-Linux-x86_64-270.26.run",
+        "sha256": "120ead8941ad6c9ea5bc263e12b004e6c4639151469cfe46a99781ab1cc1f33a"
+    },
+    "270.29": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/270.29/NVIDIA-Linux-x86_64-270.29.run",
+        "sha256": "c45209b72b2a0128fa4721c616dd51ad799e2698d46f672b006c4b2cc0c44f9c"
+    },
+    "270.30": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/270.30/NVIDIA-Linux-x86_64-270.30.run",
+        "sha256": "5f49d1497c60ea3d82e6640ebc233e05c855adf5f6702dfc0a5c73773f26207e"
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+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.13/NVIDIA-Linux-x86_64-331.13.run",
+        "sha256": "571741b8ea153281916382d287849f99a9fa65b911aa54d678b48ef0091cc0cd"
+    },
+    "331.17": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.17/NVIDIA-Linux-x86_64-331.17.run",
+        "sha256": "22968b7bd6460456e99edcad18ec237ebe66fd19e349c9ec9c3d5a16c074eab4"
+    },
+    "331.20": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.20/NVIDIA-Linux-x86_64-331.20.run",
+        "sha256": "b8803906402354d201d3b9bc21938a0fe8a7d76e93e486fddaab340df18092ec"
+    },
+    "331.38": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.38/NVIDIA-Linux-x86_64-331.38.run",
+        "sha256": "1015ac65a85ba39bdbe9e6bac54ae7ce3b2441fc7512909074e991242a46cf34"
+    },
+    "331.49": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.49/NVIDIA-Linux-x86_64-331.49.run",
+        "sha256": "ee0e0c3e95439e3d55e76aa6477fdb62bc62c04805b3efaa1f028ea64d2422f8"
+    },
+    "331.67": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.67/NVIDIA-Linux-x86_64-331.67.run",
+        "sha256": "9c7f2bb44bb26a5effb915d8aa22132a6c06483e0cfa6f47b7265b15da83bbd7"
+    },
+    "331.79": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.79/NVIDIA-Linux-x86_64-331.79.run",
+        "sha256": "c3314bd7f1f722929a2b401e12301a750ee7a73640518932a5a9af39c390a604"
+    },
+    "331.89": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.89/NVIDIA-Linux-x86_64-331.89.run",
+        "sha256": "e7f51a6c7abfe3ba8f03dbb284e2ade7430cc909b2241ff7703b17beff0dd237"
+    },
+    "331.104": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.104/NVIDIA-Linux-x86_64-331.104.run",
+        "sha256": "e0a26dc4444e84dae876db773f717e33846e1ae8a23802795ba3d39f1631f79e"
+    },
+    "331.113": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/331.113/NVIDIA-Linux-x86_64-331.113.run",
+        "sha256": "e9d5eb4394ef31825f7a86290b19b522851d1b599284095d81bac0f33a996219"
+    },
+    "334.16": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/334.16/NVIDIA-Linux-x86_64-334.16.run",
+        "sha256": "59a930f7ed6391a1e57b9fc7683420facd1c4548757d4120b1c594479af759f7"
+    },
+    "334.21": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/334.21/NVIDIA-Linux-x86_64-334.21.run",
+        "sha256": "dd35011967b815e096c267f80b36664e34d779bc33017f396dabbd1a1b86d057"
+    },
+    "337.12": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/337.12/NVIDIA-Linux-x86_64-337.12.run",
+        "sha256": "8fa588e0491e652a1cfd45aa01be9336c9b5bb5dd54bf45801a40d53d957e4b4"
+    },
+    "337.19": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/337.19/NVIDIA-Linux-x86_64-337.19.run",
+        "sha256": "bd6998c4aa5e491fb8fcb957b11dfb983ebfb755e938fce0382b006a7aba59d2"
+    },
+    "337.25": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/337.25/NVIDIA-Linux-x86_64-337.25.run",
+        "sha256": "83280f7738f65bb2e790e7530a38978cf0bd0aa741eda51629c9e9b068128af0"
+    },
+    "340.17": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.17/NVIDIA-Linux-x86_64-340.17.run",
+        "sha256": "b3311d4bc82dd1c58805f2ac29d20711f2b0c0978407bba138d603606e603662"
+    },
+    "340.24": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.24/NVIDIA-Linux-x86_64-340.24.run",
+        "sha256": "db0f4f45ece587b95a8ceb0d1acf6f7f758a370ee0c4adfa2403ba4828d58ce6"
+    },
+    "340.32": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.32/NVIDIA-Linux-x86_64-340.32.run",
+        "sha256": "ef96003110564953cad4ffaec073696dcf9652338dfe5eb0c58ae3ce45db42ac"
+    },
+    "340.46": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.46/NVIDIA-Linux-x86_64-340.46.run",
+        "sha256": "57e7694b5a985ee95d2da37598ec37cdabf40f914490f4cdb0c5184f12a74270"
+    },
+    "340.58": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.58/NVIDIA-Linux-x86_64-340.58.run",
+        "sha256": "70cc452161b969d659225a3a7d4cc17d5827f8f8ce6eb053757f30f6a666a643"
+    },
+    "340.65": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.65/NVIDIA-Linux-x86_64-340.65.run",
+        "sha256": "cd3948db5c1e2468c50140efb4bb50f1a4c84c923db8ec756bd56ff35df9ff04"
+    },
+    "340.76": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.76/NVIDIA-Linux-x86_64-340.76.run",
+        "sha256": "3bf670e9a2bdb184648dec54ce06fab65e798a9a4c9dd5155e2be4efee3e0994"
+    },
+    "340.93": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/340.93/NVIDIA-Linux-x86_64-340.93.run",
+        "sha256": "ea2ac747fd473ea55ed5f6263bd314efa94c71384f3e03d527f8d550ba84c218"
+    },
+    "343.13": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/343.13/NVIDIA-Linux-x86_64-343.13.run",
+        "sha256": "424a7d0fbf668c94454a140c880c298c71496ad7dee699a0bfc594c70e499e54"
+    },
+    "343.22": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/343.22/NVIDIA-Linux-x86_64-343.22.run",
+        "sha256": "762e9d3c1253712a5a62f7052d58e4768eaea3f0492cab934dbf5349c8523315"
+    },
+    "343.36": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/343.36/NVIDIA-Linux-x86_64-343.36.run",
+        "sha256": "2285efa2c0e6675d8724e47a09403630a674c32e514bdcfb54cec3c81810fc78"
+    },
+    "346.16": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.16/NVIDIA-Linux-x86_64-346.16.run",
+        "sha256": "d44bc3f868ce9cbd6c5bbe88d8622f693ef44282f14ed018d150fcab21a0ce32"
+    },
+    "346.22": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.22/NVIDIA-Linux-x86_64-346.22.run",
+        "sha256": "ecb3edab63ff053aa1d6e19eb0a69360075ab1b021e5181a6df738e29be9b71a"
+    },
+    "346.35": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.35/NVIDIA-Linux-x86_64-346.35.run",
+        "sha256": "8625acbbc7a2abdda436a5cb9d06f2a7f5913b16e0a35ac4f9f106853a94d086"
+    },
+    "346.47": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.47/NVIDIA-Linux-x86_64-346.47.run",
+        "sha256": "85ab28abe9defc2838839969b31aea647e0de34615fbfed3ba716205de365d0a"
+    },
+    "346.59": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.59/NVIDIA-Linux-x86_64-346.59.run",
+        "sha256": "231020548431569c0172605815ba131a18f969966b4abf82129f974740bc64ca"
+    },
+    "346.72": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.72/NVIDIA-Linux-x86_64-346.72.run",
+        "sha256": "2ae3777bcff6bf4883b6a903c82b82257bf8fc323fe174992df96a3208c50cef"
+    },
+    "346.82": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.82/NVIDIA-Linux-x86_64-346.82.run",
+        "sha256": "f68b74479a2c329628fed061977e99f744980329c94b6e9c3f396714f2a10f0e"
+    },
+    "346.87": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.87/NVIDIA-Linux-x86_64-346.87.run",
+        "sha256": "908446b20c9992cc6a7700866d36c13d9f53646837842d096d91b35644ee4e31"
+    },
+    "346.96": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/346.96/NVIDIA-Linux-x86_64-346.96.run",
+        "sha256": "229b28a6b65965a248d07223d941de7d79b54cee7c6574f1037293e8a8026727"
+    },
+    "349.12": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/349.12/NVIDIA-Linux-x86_64-349.12.run",
+        "sha256": "fe2e3be342859d2de947aed55c369f4944211ecde00435c76e50a4842fffd68a"
+    },
+    "349.16": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/349.16/NVIDIA-Linux-x86_64-349.16.run",
+        "sha256": "f980b22729b20c9eb3a3a800af524da181afbc78e2409a3f83845894983f8322"
+    },
+    "352.09": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/352.09/NVIDIA-Linux-x86_64-352.09.run",
+        "sha256": "a3ec271896b775c936e1a14e7af2e8ebf02b0bd59381217510185b313c5a5fd6"
+    },
+    "352.21": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/352.21/NVIDIA-Linux-x86_64-352.21.run",
+        "sha256": "aadfbd991b5418cbf89d2368cc49485a4194196ef08362a18f92df049381f791"
+    },
+    "352.30": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/352.30/NVIDIA-Linux-x86_64-352.30.run",
+        "sha256": "4c5fb75ba94c97b6d70ddb9ea2cb11b5ed01829b5f671d9e8abce7afba20aef5"
+    },
+    "352.41": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/352.41/NVIDIA-Linux-x86_64-352.41.run",
+        "sha256": "0eb60d0543a0e7c5c3cfec13702005ffec6e2b8c7f22c631f324736ba2a1a832"
+    },
+    "355.06": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/355.06/NVIDIA-Linux-x86_64-355.06.run",
+        "sha256": "898304e1455bbccad4a3da3520d7fe17db254413f3458d0a296b45fb9cf2bcd6"
+    },
+    "355.11": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/355.11/NVIDIA-Linux-x86_64-355.11.run",
+        "sha256": "a59b425381add9d9058dc2d987bf3087ab59c43224b5eb04c3f273f5886451ed"
+    },
+    "470.161.03": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/470.161.03/NVIDIA-Linux-x86_64-470.161.03.run",
+        "sha256": "5da82a7f8c76e781e7d7f0be7b798db4d344f26bd4facf9abcf3c71c71fe7640"
+    },
+    "510.108.03": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/510.108.03/NVIDIA-Linux-x86_64-510.108.03.run",
+        "sha256": "410a515e78df29c2cba4ac0b497889ce0ff1b04cfc711ff889e2dfc80f0da0d8"
+    },
+    "515.86.01": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/515.86.01/NVIDIA-Linux-x86_64-515.86.01.run",
+        "sha256": "141777e1ca2f11e97d8d33260213f1be327eb73922ae22f4ddab404bb2ef4664"
+    },
+    "525.53": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/525.53/NVIDIA-Linux-x86_64-525.53.run",
+        "sha256": "74bb0971f04f1dddd3c4641c891706fb96e8de52e22f6079e50de76d3a51687f"
+    },
+    "525.60.11": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/525.60.11/NVIDIA-Linux-x86_64-525.60.11.run",
+        "sha256": "816ee6c2e0813ccc3d4a7958f71fc49a37c60efe1d51d6146c1ce72403983d5d"
+    },
+    "525.60.13": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/525.60.13/NVIDIA-Linux-x86_64-525.60.13.run",
+        "sha256": "dce1c184f9f038be72237ccd29c66bb151077f6037f1c158c83d582bd2dba8ca"
+    },
+    "525.78.01": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/525.78.01/NVIDIA-Linux-x86_64-525.78.01.run",
+        "sha256": "43da42d2bf69bc37ea9c7c0fa02f52db0dcc483c272f52edacad89a5cb495a93"
+    },
+    "latest": {
+        "url": "https://download.nvidia.com/XFree86/Linux-x86_64/525.78.01/NVIDIA-Linux-x86_64-525.78.01.run",
+        "sha256": "43da42d2bf69bc37ea9c7c0fa02f52db0dcc483c272f52edacad89a5cb495a93"
+    }
+}
diff --git a/overlays.nix b/overlays.nix
index 24da28f..ec85937 100644
--- a/overlays.nix
+++ b/overlays.nix
@@ -1,20 +1,42 @@
-flake_input@{ kpcli-py, nixgl, rust-overlay, ... }: [
+flake_input@{ kpcli-py, nixgl, rust-overlay, neovim-nightly-overlay, ... }: [
+
+  # TODO: this is quite harmful to add globally. nixGL is built not to be pure
   nixgl.overlays.default
+
   rust-overlay.overlays.default
-  (final: prev: {
-    # use python3.9, which works because of cython somehow?
-    kpcli-py = final.poetry2nix.mkPoetryApplication {
-      projectDir = kpcli-py;
-      python = final.python39;
-      overrides = final.poetry2nix.defaultPoetryOverrides.extend (self: super: {
-        # tableformatter requires setuptools
-        tableformatter = super.tableformatter.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ super.setuptools super.cython_3 ];
-          }
-        );
-      });
-    };
-  })
+
+  neovim-nightly-overlay.overlay
+
+  (final: prev:
+    let
+      nightlyRustWithExts = exts: final.rust-bin.selectLatestNightlyWith (
+        toolchain: (toolchain.minimal.override {
+          extensions = exts;
+        })
+      );
+      # https://rust-lang.github.io/rustup/concepts/profiles.html
+      rust-default-components = [ "rust-docs" "rustfmt" "clippy" ];
+      rust-dev-components = rust-default-components ++ [ "rust-src" "rust-analyzer" "miri" ];
+    in
+    {
+      # use python3.9, which works because of cython somehow?
+      kpcli-py = final.poetry2nix.mkPoetryApplication {
+        projectDir = kpcli-py;
+        python = final.python39;
+        overrides = final.poetry2nix.defaultPoetryOverrides.extend (self: super: {
+          # tableformatter requires setuptools
+          tableformatter = super.tableformatter.overridePythonAttrs (
+            old: {
+              buildInputs = (old.buildInputs or [ ]) ++ [ super.setuptools super.cython_3 ];
+            }
+          );
+        });
+      };
+
+      rust4devs = nightlyRustWithExts rust-dev-components;
+      rust4cargo = nightlyRustWithExts [ ];
+      rust4normi = nightlyRustWithExts rust-default-components;
+    })
+
 ]
 
diff --git a/scripts/config-sysnix.sh b/scripts/config-sysnix.sh
index 261aa69..f7de08d 100755
--- a/scripts/config-sysnix.sh
+++ b/scripts/config-sysnix.sh
@@ -19,10 +19,10 @@ fi
 SCRIPT_DIR=$(realpath $(dirname $0))
 echo "SCRIPT_DIR: ${SCRIPT_DIR}"
 
-SYSNIX_DIR="${SCRIPT_DIR}/../nix-conf/system"
+SYSNIX_DIR="${SCRIPT_DIR}/.."
 
 # Copy hardware-configuration of existing machine onto our version control
-SYSNIX_PROF="${SYSNIX_DIR}/profiles/${HOSTNAME}"
+SYSNIX_PROF="${SYSNIX_DIR}/hosts/${HOSTNAME}"
 HARDWARE_CONF="${SYSNIX_PROF}/hardware-configuration.nix" 
 if [ ! -f "${HARDWARE_CONF}" ]; then
 	mkdir "$SYSNIX_PROF"
diff --git a/scripts/hm-switch.sh b/scripts/hm-switch.sh
index 9477978..e88df6e 100755
--- a/scripts/hm-switch.sh
+++ b/scripts/hm-switch.sh
@@ -7,15 +7,27 @@ echo "SCRIPT_DIR: ${SCRIPT_DIR}"
 
 HOME_MANAGER_DIR="${SCRIPT_DIR}/../nix-conf/home-manager"
 
+# Manage nix.conf. Ideally, this should be done with snapshot-based version
+# and with preview on-the-spot, with some timeout
+if [ -f /etc/nix/nix.conf ]; then
+    # managed nix.conf
+    BACKUP_FILE="/etc/nix/nix.conf.backup"
+    echo "overwriting /etc/nix/nix.conf. Please find latest backup in ${BACKUP_FILE}"
+    sudo cp /etc/nix/nix.conf ${BACKUP_FILE}
+    sudo cp "${HOME_MANAGER_DIR}/hwtr/nix.conf" /etc/nix/
+fi
+
 # Mason is bad: it puts binaries onto xdg.data
+# let's make mason starts fresh, just in case we introduce RPATH hacks 
+# that injects binary for Mason to use.
 rm -rf ~/.local/share/nvim/mason
 
 # test if we have home-manager, if not, attempt to use nix to put home-manager to
 # our environment
-if [ $(home-manager >/dev/null 2>&1) ]; then
-    nix-shell -p home-manager --run "home-manager switch --flake $HOME_MANAGER_DIR"
+if [ $(home-manager help >/dev/null 2>&1) ]; then
+    nix-shell -p home-manager --run "home-manager switch --flake $HOME_MANAGER_DIR $@"
 else
-    home-manager switch -b backup --flake "$HOME_MANAGER_DIR"
+    home-manager switch -b backup --flake "$HOME_MANAGER_DIR" $@
 fi
 
 
diff --git a/secrets.nix b/secrets.nix
index 549ff67..04e5d81 100644
--- a/secrets.nix
+++ b/secrets.nix
@@ -1,10 +1,22 @@
-(import
-  (
-    let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
-    fetchTarball {
-      url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
-      sha256 = lock.nodes.flake-compat.locked.narHash;
-    }
-  )
-  { src = ./.; }
-).defaultNix.secrets
+let
+  inherit ((import
+    (
+      let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
+      fetchTarball {
+        url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+        sha256 = lock.nodes.flake-compat.locked.narHash;
+      }
+    )
+    { src = ./.; }
+  ).defaultNix) secrets;
+  inherit (secrets) pubKeys;
+  inherit (pubKeys) users hosts;
+  all = users // hosts;
+  c_ = builtins;
+in
+{
+  "secrets/s3fs.age".publicKeys = c_.attrValues (all);
+  "secrets/s3fs.digital-garden.age".publicKeys = c_.attrValues (all);
+  "secrets/_nhitrl.age".publicKeys = c_.attrValues (all);
+  "secrets/wifi.env.age".publicKeys = c_.attrValues (all);
+}
diff --git a/secrets/_nhitrl.age b/secrets/_nhitrl.age
index 7b3f4d2..ba859ad 100644
Binary files a/secrets/_nhitrl.age and b/secrets/_nhitrl.age differ
diff --git a/secrets/default.nix b/secrets/default.nix
index 4808c6c..0624482 100644
--- a/secrets/default.nix
+++ b/secrets/default.nix
@@ -1,5 +1,6 @@
 # TODO: put ssh keys as user/host config
-inputs: let 
+inputs:
+let
   # user-specific (~/.ssh/id_ed25519.pub)
   users = {
     "hungtr@bao" = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK+1+gps6phbZboIb9fH51VNPUCkhSSOAbkI3tq3Ou0Z";
@@ -11,7 +12,8 @@ inputs: let
   all = users // systems;
   # stands for calculus
   c_ = builtins;
-in {
+in
+{
   "system/secrets/s3fs.age".publicKeys = c_.attrValues (all);
   "system/secrets/s3fs.digital-garden.age".publicKeys = c_.attrValues (all);
   "system/secrets/_nhitrl.age".publicKeys = c_.attrValues (all);
diff --git a/secrets/s3fs.age b/secrets/s3fs.age
index 89113d0..88ed5a8 100644
--- a/secrets/s3fs.age
+++ b/secrets/s3fs.age
@@ -1,10 +1,10 @@
 age-encryption.org/v1
--> ssh-ed25519 ahbzMg 6pTVLAgOY/JZVWiCFHLo8xQ4/CL6620IMaBRpqI8Wws
-CtJeQuy5VzKZhJnIH+/cjlKsAcg0RY2bhHTWVm+hUOY
--> ssh-ed25519 glsjZQ we7RCgsnODTJ8rKYhU+9tu0DmLH+98mcQKQ3I2slikM
-G81lsFLQR9polxme1K/MU2d8Y01PrTqtzJnVq0EMJF0
--> |-grease B\W,I9z ^Gx;$ Kk7!4,P
-0Jl5Lhx7R8YOs9S+hUtQDDpNIqBhC/MM0N7w1MCtwYtkIIIWKfY9jkJ7+Cew2Ee5
-Qb04jnE
---- b7AXWRgK45a/91iwmwt5g+CWOlU/2f4nUDfXlg/bs9A
-��%;�3RmQ��Whp̖V�;�׮��V���[z�9al��=cL��va��u7�,�t����Uܶh^&�ֿW�JP6-�ң
n�-��=�]
\ No newline at end of file
+-> ssh-ed25519 ahbzMg Lx4TLKDZ2yk3DQsM6nOOI1o+FHu0lNtT2p3PBdao+C4
+RsTScUeLmFrO6v1OOxBbyBCMBMVhsGrtu5W9iMOw8B0
+-> ssh-ed25519 glsjZQ CdLCkzb1dBoG9gYdMisaZBZT+nnzfOX326CWq6cvN1s
+UKGCxej9lZnLzsuFJnFOMpyrz7YzJrHcrFuDz8l8RQk
+-> U<J-grease + A6h/F, 'mix
+jpEa7b7rRo6bVpTr19c5ALOfaeiP0jldtpQBRWfJnma3VSo3kkDQpfa3RvPjZfD8
+Eg9Zb03MKMUAJnWwfLCXVFQqEVpSaIwI+ujLZ5Cm
+--- /a+J/jeGoWwuNvDEAIGzU0WKx86oH+YRTnSexf+8NP4
+!]F��O�J�v���%�-�tڏ؝uz�B���}���"C\;D(��ÒF�ήj��A7&����?�.�J��Ba�����[�dXr�ތO
\ No newline at end of file
diff --git a/secrets/s3fs.digital-garden.age b/secrets/s3fs.digital-garden.age
index bb46bdd..16139ae 100644
Binary files a/secrets/s3fs.digital-garden.age and b/secrets/s3fs.digital-garden.age differ
diff --git a/secrets/wifi.env.age b/secrets/wifi.env.age
new file mode 100644
index 0000000..0b6f637
Binary files /dev/null and b/secrets/wifi.env.age differ
diff --git a/templates/default.nix b/templates/default.nix
index 70d9fe4..f08cde1 100644
--- a/templates/default.nix
+++ b/templates/default.nix
@@ -1,8 +1,8 @@
 # TODO: templates should be able to have initial states like
 # repo name, author,...
-{pkgs
-,lib
-,...
+{ pkgs
+, lib
+, ...
 }: {
   rust = {
     path = ./rust;
diff --git a/templates/rust-monorepo/.gitignore b/templates/rust-monorepo/.gitignore
index 4a45e6e..ca401be 100644
--- a/templates/rust-monorepo/.gitignore
+++ b/templates/rust-monorepo/.gitignore
@@ -3,10 +3,6 @@
 debug/
 target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
 # These are backup files generated by rustfmt
 **/*.rs.bk
 
diff --git a/templates/rust-monorepo/README.md b/templates/rust-monorepo/README.md
new file mode 100644
index 0000000..22b176a
--- /dev/null
+++ b/templates/rust-monorepo/README.md
@@ -0,0 +1,41 @@
+# Rust-monorepo. TODO: Change this to your monorepo name
+
+## About this template 
+
+[![built with nix](https://builtwithnix.org/badge.svg)](https://builtwithnix.org)
+
+- Bootstrapped with [pegasust/dotfiles](https://git.pegasust.com/pegasust/dotfiles)
+
+- Uses [naersk](https://github.com/nix-community/naersk.git) to build package(s)
+
+- Provides [devShell (`nix develop`)](https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-develop.html),
+[shell.nix (`nix-shell -p ./`)](https://nixos.org/manual/nix/stable/command-ref/nix-shell.html)
+for development environment. It contains:
+  - The default `devShell` provides Nightly rustc via 
+[`gh:oxalica/rust-overlay`](https://github.com/oxalica/rust-overlay.git)
+  - [rustc components](https://rust-lang.github.io/rustup/concepts/components.html) includes
+  `rust-src`, [`rust-analyzer`](https://github.com/rust-lang/rust-analyzer.git),
+  `clippy`, `miri`
+  - [`evcxr`: Rust REPL]() and [`bacon`: Rust nodemon]()
+
+## Check out these [killer libraries](https://jondot.medium.com/12-killer-rust-libraries-you-should-know-c60bab07624f)
+### Application development
+
+- [Serde](https://github.com/serde-rs/serde) for (de)serialization needs
+  - Data-driven programming in Rust starts with Serde
+  - Service system programming starts with defining your message protocols & data formats
+
+- [Clap](https://docs.rs/clap/latest/clap/) declarative CLI arguments
+  - Data-driven CLI development in Rust starts with Clap
+
+- [itertools](https://lib.rs/crates/itertools) for extra juice to iterators
+
+- [log](https://lib.rs/crates/log) or [env-logger](https://docs.rs/env_logger/latest/env_logger)
+for logging needs
+
+### Library development
+
+- [proptest](https://lib.rs/crates/proptest) for hyppothesis testing
+  - Data-driven testing starts with proptest
+
+
diff --git a/templates/rust-monorepo/config.toml b/templates/rust-monorepo/config.toml
new file mode 100644
index 0000000..93bcc86
--- /dev/null
+++ b/templates/rust-monorepo/config.toml
@@ -0,0 +1,4 @@
+[cargo-new]
+# since we already have a root .git
+vcs = "none"  # enum["git", "hg", "pijul", "fossil", "none"]
+
diff --git a/templates/rust-monorepo/default.nix b/templates/rust-monorepo/default.nix
index 39bacff..89308a3 100644
--- a/templates/rust-monorepo/default.nix
+++ b/templates/rust-monorepo/default.nix
@@ -1,7 +1,10 @@
-(import (
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
-    sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2"; }
-) {
-  src =  ./.;
-}).defaultNix
+(import
+  (
+    fetchTarball {
+      url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
+      sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2";
+    }
+  )
+  {
+    src = ./.;
+  }).defaultNix
diff --git a/templates/rust-monorepo/flake.nix b/templates/rust-monorepo/flake.nix
index f352b18..a75001f 100644
--- a/templates/rust-monorepo/flake.nix
+++ b/templates/rust-monorepo/flake.nix
@@ -25,6 +25,13 @@
         devShell = with pkgs; mkShell {
           buildInputs = [
             rust_pkgs
+            # rust's compiler is quite powerful enough to the point where
+            # a REPL is not really necessary.
+            # Rely on the compiler and bacon 99% of the time
+            # only use REPL if you need to explore/prototype
+            # In that case, might as well put the code into sandbox
+            pkgs.evcxr
+            pkgs.bacon
           ];
           shellHook = ''
             # nix flake update # is this even needed?
diff --git a/templates/rust-monorepo/shell.nix b/templates/rust-monorepo/shell.nix
index 77db547..47458ad 100644
--- a/templates/rust-monorepo/shell.nix
+++ b/templates/rust-monorepo/shell.nix
@@ -1,7 +1,10 @@
-(import (
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
-    sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2"; }
-) {
-  src =  ./.;
-}).shellNix
+(import
+  (
+    fetchTarball {
+      url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
+      sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2";
+    }
+  )
+  {
+    src = ./.;
+  }).shellNix
diff --git a/templates/rust/default.nix b/templates/rust/default.nix
index 39bacff..89308a3 100644
--- a/templates/rust/default.nix
+++ b/templates/rust/default.nix
@@ -1,7 +1,10 @@
-(import (
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
-    sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2"; }
-) {
-  src =  ./.;
-}).defaultNix
+(import
+  (
+    fetchTarball {
+      url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
+      sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2";
+    }
+  )
+  {
+    src = ./.;
+  }).defaultNix
diff --git a/templates/rust/flake.nix b/templates/rust/flake.nix
index e5f373e..a75001f 100644
--- a/templates/rust/flake.nix
+++ b/templates/rust/flake.nix
@@ -11,22 +11,28 @@
       let
         overlays = [ rust-overlay.overlays.default ];
         pkgs = import nixpkgs { inherit system overlays; };
+        rust_pkgs = (pkgs.rust-bin.selectLatestNightlyWith
+          (
+            toolchain:
+            toolchain.default.override {
+              extensions = [ "rust-src" "rust-analyzer" "rust-docs" "clippy" "miri" ];
+            }
+          ));
         naersk-lib = pkgs.callPackage naersk { };
       in
       {
         defaultPackage = naersk-lib.buildPackage ./.;
         devShell = with pkgs; mkShell {
           buildInputs = [
-            (pkgs.rust-bin.selectLatestNightlyWith
-              (
-                toolchain:
-                toolchain.default.override {
-                  extensions = [ "rust-src" ];
-                }
-              ))
-            pkgs.rust-analyzer
+            rust_pkgs
+            # rust's compiler is quite powerful enough to the point where
+            # a REPL is not really necessary.
+            # Rely on the compiler and bacon 99% of the time
+            # only use REPL if you need to explore/prototype
+            # In that case, might as well put the code into sandbox
+            pkgs.evcxr
+            pkgs.bacon
           ];
-          RUST_SRC_PATH = rustPlatform.rustLibSrc;
           shellHook = ''
             # nix flake update # is this even needed?
           '';
diff --git a/templates/rust/shell.nix b/templates/rust/shell.nix
index 77db547..47458ad 100644
--- a/templates/rust/shell.nix
+++ b/templates/rust/shell.nix
@@ -1,7 +1,10 @@
-(import (
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
-    sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2"; }
-) {
-  src =  ./.;
-}).shellNix
+(import
+  (
+    fetchTarball {
+      url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
+      sha256 = "0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2";
+    }
+  )
+  {
+    src = ./.;
+  }).shellNix
diff --git a/users/default.nix b/users/default.nix
new file mode 100644
index 0000000..030b376
--- /dev/null
+++ b/users/default.nix
@@ -0,0 +1,13 @@
+{ lib, ... }@inputs:
+let
+  config = {
+    hungtr.metadata = { };
+    "hungtr@bao".metadata = {
+      ssh_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK+1+gps6phbZboIb9fH51VNPUCkhSSOAbkI3tq3Ou0Z";
+    };
+  };
+in
+{
+  homeConfigurations = { };
+  pubKeys = lib.getPubkey config;
+}