diff --git a/nix-conf/home-manager/base/neovim.nix b/nix-conf/home-manager/base/neovim.nix
index e69de29..0d3067f 100644
--- a/nix-conf/home-manager/base/neovim.nix
+++ b/nix-conf/home-manager/base/neovim.nix
@@ -0,0 +1,87 @@
+{ pkgs, lib, config, ... }:
+let
+  # NOTE: Failure 1: buildInputs is pretty much ignored
+  #   my_neovim = pkgs.neovim-unwrapped.overrideDerivation (old: {
+  # # TODO: is there a more beautiful way to override propagatedBuildInputs?
+  #     name = "hungtr-" + old.name;
+  #     buildInputs = (old.buildInputs or []) ++ [
+  #       pkgs.tree-sitter # highlighting
+  #       rust_pkgs        # for potentially rust-analyzer
+  #       pkgs.fzf
+  #       pkgs.ripgrep
+  #       pkgs.zk
+  #       pkgs.fd
+  #     ];
+  # NOTE: Failure 2: propagatedBuildInputs probably only concerns dyn libs
+  #   });
+  # NOTE: Failure 3: must be unwrapped neovim because home-manager does the wrapping
+  # my_neovim = pkgs.neovim;
+
+  # NOTE: Add packages to nvim_pkgs instead, so that it's available at userspace
+  # and is added to the path after wrapping.
+  # check: nix repl `homeConfigurations.hungtr.config.programs.neovim.finalPackage.buildCommand`
+  # see: :/--suffix.*PATH
+  # there should be mentions of additional packages
+  my_neovim = pkgs.neovim-unwrapped;
+  rust_pkgs = (pkgs.rust-bin.selectLatestNightlyWith
+    (
+      toolchain:
+      toolchain.default.override {
+        extensions = [ "rust-src" ];
+      }
+    ));
+  nvim_pkgs = [
+    # pkgs.gccStdenv
+    pkgs.gcc
+    pkgs.tree-sitter
+    pkgs.fzf # file name fuzzy search
+    pkgs.ripgrep # content fuzzy search
+    pkgs.zk # Zettelkasten (limited support)
+    pkgs.fd # Required by a Telescope plugin (?)
+    pkgs.stdenv.cc.cc.lib
+
+    # Language-specific stuffs
+    pkgs.sumneko-lua-language-server
+    pkgs.rust-analyzer
+    rust_pkgs
+    pkgs.evcxr # Rust REPL for Conjure!
+
+    # Python3 as alternative to bash scripts :^)
+    # (pkgs.python310Full.withPackages (pypkgs: [
+    #   # python-lsp-server's dependencies is absolutely astronomous
+    #   # pypkgs.python-lsp-server # python-lsp. Now we'll have to tell mason to look for this
+    #   pypkgs.pynvim # nvim provider
+    #   pypkgs.ujson  # pylsp seems to rely on this. satisfy it lol
+    # ]))
+  ];
+in
+{
+  options.base.neovim = {
+    enable = lib.mkOption {
+      default = true;
+      description = "enable personalized neovim as default editor";
+      type = lib.types.bool;
+      example = false;
+    };
+  };
+  config = lib.mkIf config.base.neovim.enable {
+    programs.neovim = {
+      enable = true;
+      package = my_neovim;
+      viAlias = true;
+      vimAlias = true;
+      withPython3 = true;
+      withNodeJs = true;
+      extraPackages = nvim_pkgs;
+      # only for here for archive-documentation
+      # extraPython3Packages = (pypkgs: [
+      #   # pypkgs.python-lsp-server
+      #   pypkgs.ujson
+      # ]);
+      # I use vim-plug, so I probably don't require packaging
+      # extraConfig actually writes to init-home-manager.vim (not lua)
+      # https://github.com/nix-community/home-manager/pull/3287
+      # extraConfig = builtins.readFile "${proj_root}/neovim/init.lua";
+    };
+  };
+}
diff --git a/nix-conf/home-manager/home.nix b/nix-conf/home-manager/home.nix
index efab2ed..18804b0 100644
--- a/nix-conf/home-manager/home.nix
+++ b/nix-conf/home-manager/home.nix
@@ -12,62 +12,12 @@
 , ...
 }:
 let
-  nvim_pkgs = [
-    # Yes, I desperately want neovim to work out-of-the-box without flake.nix for now
-    # I want at least python LSP to work everywhere because it's basically
-    # an alternative to bash script when I move to OpenColo
-    # pkgs.gccStdenv
-    pkgs.gcc
-    pkgs.tree-sitter
-    pkgs.fzf  # file name fuzzy search
-    pkgs.sumneko-lua-language-server
-    pkgs.ripgrep  # content fuzzy search
-    pkgs.zk  # Zettelkasten (limited support)
-    pkgs.fd  # Required by a Telescope plugin (?)
-    pkgs.stdenv.cc.cc.lib
-    rust_pkgs
-    pkgs.rust-analyzer
-    # Python3 as alternative to bash scripts :^)
-    # (pkgs.python310Full.withPackages (pypkgs: [
-    #   # python-lsp-server's dependencies is absolutely astronomous
-    #   # pypkgs.python-lsp-server # python-lsp. Now we'll have to tell mason to look for this
-    #   pypkgs.pynvim # nvim provider
-    #   pypkgs.ujson  # pylsp seems to rely on this. satisfy it lol
-    # ]))
-  ];
-  rust_pkgs = (pkgs.rust-bin.selectLatestNightlyWith
-    (
-      toolchain:
-      toolchain.default.override {
-        extensions = [ "rust-src" ];
-      }
-    ));
-# NOTE: Failure 1: buildInputs is pretty much ignored
-#   my_neovim = pkgs.neovim-unwrapped.overrideDerivation (old: {
-# # TODO: is there a more beautiful way to override propagatedBuildInputs?
-#     name = "hungtr-" + old.name;
-#     buildInputs = (old.buildInputs or []) ++ [
-#       pkgs.tree-sitter # highlighting
-#       rust_pkgs        # for potentially rust-analyzer
-#       pkgs.fzf
-#       pkgs.ripgrep
-#       pkgs.zk
-#       pkgs.fd
-#     ];
-# NOTE: Failure 2: propagatedBuildInputs probably only concerns dyn libs
-#   });
-  # NOTE: Failure 3: must be unwrapped neovim because home-manager does the wrapping
-  # my_neovim = pkgs.neovim;
-
-  # NOTE: Add packages to nvim_pkgs instead, so that it's available at userspace
-  # and is added to the path after wrapping.
-  # check: nix repl `homeConfigurations.hungtr.config.programs.neovim.finalPackage.buildCommand`
-  # see: :/--suffix.*PATH
-  # there should be mentions of additional packages
-  my_neovim = pkgs.neovim-unwrapped;
   inherit (myLib) fromYaml;
 in
 {
+  imports = [
+    ./base/neovim.nix
+  ];
   home = {
     username = myHome.username;
     homeDirectory = myHome.homeDirectory;
@@ -98,7 +48,6 @@ in
     # pkgs.python310Packages.tensorflow
     # pkgs.python310Packages.scikit-learn
   ] ++ (myHome.packages or [ ]) 
-  # ++ nvim_pkgs
   );
 
   ## Configs ## 
@@ -109,25 +58,6 @@ in
   programs.jq = {
     enable = true;
   };
-  # TODO: override the original package, inject tree-sitter and stuffs
-  programs.neovim = {
-    enable = true;
-    package = my_neovim;
-    viAlias = true;
-    vimAlias = true;
-    withPython3 = true;
-    withNodeJs = true;
-    extraPackages = nvim_pkgs;
-    # only for here for archive-documentation
-    # extraPython3Packages = (pypkgs: [
-    #   # pypkgs.python-lsp-server
-    #   pypkgs.ujson
-    # ]);
-    # I use vim-plug, so I probably don't require packaging
-    # extraConfig actually writes to init-home-manager.vim (not lua)
-    # https://github.com/nix-community/home-manager/pull/3287
-    # extraConfig = builtins.readFile "${proj_root}/neovim/init.lua";
-  };
   # not exist in home-manager
   # have to do it at system level
   # services.ntp.enable = true; # automatic time
diff --git a/templates/rust-monorepo/exec/cli/Cargo.toml b/templates/rust-monorepo/exec/cli/Cargo.toml
index c3cd6d1..6d7106a 100644
--- a/templates/rust-monorepo/exec/cli/Cargo.toml
+++ b/templates/rust-monorepo/exec/cli/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-core = { version = "0.1.0", path = "../../packages/core" }
+corelib = { version = "0.1.0", path = "../../packages/corelib" }
diff --git a/templates/rust-monorepo/packages/core/.gitignore b/templates/rust-monorepo/packages/corelib/.gitignore
similarity index 100%
rename from templates/rust-monorepo/packages/core/.gitignore
rename to templates/rust-monorepo/packages/corelib/.gitignore
diff --git a/templates/rust-monorepo/packages/core/Cargo.toml b/templates/rust-monorepo/packages/corelib/Cargo.toml
similarity index 90%
rename from templates/rust-monorepo/packages/core/Cargo.toml
rename to templates/rust-monorepo/packages/corelib/Cargo.toml
index 900733d..f8d9a89 100644
--- a/templates/rust-monorepo/packages/core/Cargo.toml
+++ b/templates/rust-monorepo/packages/corelib/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "core"
+name = "corelib"
 version = "0.1.0"
 edition = "2021"
 
diff --git a/templates/rust-monorepo/packages/core/src/lib.rs b/templates/rust-monorepo/packages/corelib/src/lib.rs
similarity index 100%
rename from templates/rust-monorepo/packages/core/src/lib.rs
rename to templates/rust-monorepo/packages/corelib/src/lib.rs