143 lines
4.3 KiB
Nix
143 lines
4.3 KiB
Nix
{
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lib,
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pkgs,
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config,
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...
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}:
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with builtins;
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with lib; {
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options.wsl = with types; let
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coercedToStr = coercedTo (oneOf [bool path int]) toString str;
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in {
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enable = mkEnableOption "support for running NixOS as a WSL distribution";
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automountPath = mkOption {
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type = str;
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default = "/mnt";
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description = "The path where windows drives are mounted (e.g. /mnt/c)";
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};
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automountOptions = mkOption {
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type = str;
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default = "metadata,uid=1000,gid=100";
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description = "Options to use when mounting windows drives";
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};
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defaultUser = mkOption {
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type = str;
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default = "nixos";
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description = "The name of the default user";
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};
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startMenuLaunchers = mkEnableOption "shortcuts for GUI applications in the windows start menu";
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wslConf = mkOption {
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type = attrsOf (attrsOf (oneOf [string int bool]));
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description = "Entries that are added to /etc/wsl.conf";
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};
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};
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config = let
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cfg = config.wsl;
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syschdemd = import ../syschdemd.nix {
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inherit lib pkgs config;
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inherit (cfg) automountPath defaultUser;
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defaultUserHome = config.users.users.${cfg.defaultUser}.home;
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};
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in
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mkIf cfg.enable {
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wsl.wslConf = {
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automount = {
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enabled = true;
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mountFsTab = true;
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root = "${cfg.automountPath}/";
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options = cfg.automountOptions;
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};
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network = {
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generateResolvConf = mkDefault true;
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generateHosts = mkDefault true;
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};
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};
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# WSL is closer to a container than anything else
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boot.isContainer = true;
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environment.noXlibs = lib.mkForce false; # override xlibs not being installed (due to isContainer) to enable the use of GUI apps
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hardware.opengl.enable = true; # Enable GPU acceleration
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environment = {
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etc = {
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"wsl.conf".text = generators.toINI {} cfg.wslConf;
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# DNS settings are managed by WSL
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hosts.enable = !config.wsl.wslConf.network.generateHosts;
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"resolv.conf".enable = !config.wsl.wslConf.network.generateResolvConf;
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};
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systemPackages = [
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(pkgs.runCommand "wslpath" {} ''
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mkdir -p $out/bin
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ln -s /init $out/bin/wslpath
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'')
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];
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};
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networking.dhcpcd.enable = false;
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users.users.${cfg.defaultUser} = {
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isNormalUser = true;
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uid = 1000;
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extraGroups = ["wheel"]; # Allow the default user to use sudo
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};
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users.users.root = {
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shell = "${syschdemd}/bin/syschdemd";
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# Otherwise WSL fails to login as root with "initgroups failed 5"
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extraGroups = ["root"];
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};
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security.sudo = {
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extraConfig = ''
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Defaults env_keep+=INSIDE_NAMESPACE
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'';
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wheelNeedsPassword = mkDefault false; # The default user will not have a password by default
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};
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system.activationScripts = {
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copy-launchers = mkIf cfg.startMenuLaunchers (
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stringAfter [] ''
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for x in applications icons; do
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echo "Copying /usr/share/$x"
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mkdir -p /usr/share/$x
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${pkgs.rsync}/bin/rsync -ar --delete $systemConfig/sw/share/$x/. /usr/share/$x
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done
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''
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);
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populateBin = stringAfter [] ''
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echo "setting up /bin..."
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ln -sf /init /bin/wslpath
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ln -sf ${pkgs.bashInteractive}/bin/bash /bin/sh
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ln -sf ${pkgs.util-linux}/bin/mount /bin/mount
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'';
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};
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systemd = {
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# Disable systemd units that don't make sense on WSL
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services = {
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"serial-getty@ttyS0".enable = false;
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"serial-getty@hvc0".enable = false;
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"getty@tty1".enable = false;
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"autovt@".enable = false;
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firewall.enable = false;
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systemd-resolved.enable = false;
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systemd-udevd.enable = false;
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};
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tmpfiles.rules = [
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# Don't remove the X11 socket
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"d /tmp/.X11-unix 1777 root root"
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];
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# Don't allow emergency mode, because we don't have a console.
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enableEmergencyMode = false;
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};
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warnings = optional (config.systemd.services.systemd-resolved.enable && config.wsl.wslConf.network.generateResolvConf) "systemd-resolved is enabled, but resolv.conf is managed by WSL";
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};
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}
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