[NixOS] Add make-enable to control nixos modules with configuration

nixos/bootstrap/flake.nix

@@ -43,6 +43,7 @@
         inherit system;
         modules = baseModules ++ modules;
         specialArgs = { inherit inputs; } // specialArgs;
+        makeEnable = (import ../make-enable.nix) nixpkgs.lib;
       });
       machinesPath = ../machines;
       machineFilenames = builtins.attrNames (builtins.readDir machinesPath);

nixos/desktop.nix

@@ -2,7 +2,6 @@
 {
   imports = [
     ./fonts.nix
-    inputs.home-manager.nixosModule
   ];
 
   services.xserver = {

nixos/environment.nix

@@ -1,4 +1,6 @@
 { config, pkgs, options, lib, inputs, ... }:
+let libDir = "${config.dotfiles-directory}/dotfiles/lib";
+in
 with lib;
 {
   options = {
@@ -8,8 +10,7 @@ with lib;
     };
   };
 
-  config = let libDir = "${config.dotfiles-directory}/dotfiles/lib";
-  in {
+  config = {
     # Shell configuration
     programs.zsh = {
       enable = true;

nixos/flake.nix

@@ -131,6 +131,7 @@
         myPackages = {
           taffybar = inputs.imalison-taffybar.defaultPackage."${system}";
         };
+        makeEnable = (import ./make-enable.nix) nixpkgs.lib;
       } // specialArgs;
     });
     machinesFilepath = ./machines;

nixos/home-manager.nix

@@ -1,4 +1,4 @@
-inputs: { pkgs, config, ... }: {
+{ pkgs, config, specialArgs, ... }: {
   xsession = {
     enable = true;
     preferStatusNotifierItems = true;
@@ -33,7 +33,7 @@ inputs: { pkgs, config, ... }: {
 
   services.taffybar = {
     enable = true;
-    package = inputs.imalison-taffybar.defaultPackage."${pkgs.system}";
+    package = specialArgs.nixos.specialArgs.inputs.imalison-taffybar.defaultPackage."${pkgs.system}";
   };
 
   services.notify-osd = {

nixos/make-enable.nix

@@ -0,0 +1,26 @@
+lib: config: pathStr: default: configAttrs:
+let
+
+  pathToAttrSet = str: value:
+  let
+    parts = lib.splitString "." str;
+  in
+  if lib.length parts == 1 then
+  { ${lib.head parts} = value; }
+  else
+  { ${lib.head parts} = pathToAttrSet (lib.concatStringsSep "." (lib.tail parts)) value; };
+
+  optionsSet = pathToAttrSet pathStr {
+    enable = lib.mkOption {
+      inherit default;
+      type = lib.types.bool;
+    };
+  };
+
+  cfg = lib.attrByPath (lib.splitString "." pathStr) { enable = false; defaulted = true; } config;
+
+in
+{
+  options = optionsSet;
+  config = lib.mkIf cfg.enable configAttrs;
+}

nixos/nix.nix

@@ -1,5 +1,16 @@
-{ inputs, ... }:
+{ inputs, specialArgs, config, ... }:
 {
+  imports = [
+    inputs.home-manager.nixosModule
+  ];
+  home-manager.extraSpecialArgs = {
+    nixos = {
+      inherit specialArgs config;
+    };
+  };
+  home-manager.useGlobalPkgs = true;
+  home-manager.useUserPackages = true;
+
   nix = {
     extraOptions = ''
       experimental-features = nix-command flakes

nixos/xmonad.nix

@@ -1,5 +1,5 @@
-{ config, pkgs, options, inputs, ... }:
-{
+{ config, pkgs, options, inputs, specialArgs, ... }:
+specialArgs.makeEnable config "modules.xmonad" true  {
   nixpkgs.overlays = with inputs; [
     xmonad.overlay
     xmonad-contrib.overlay
@@ -31,7 +31,5 @@
     haskellPackages.dbus-hslogger
   ];
 
-  home-manager.useGlobalPkgs = true;
-  home-manager.useUserPackages = true;
-  home-manager.users.imalison = (import ./home-manager.nix) inputs;
+  home-manager.users.imalison = (import ./home-manager.nix);
 }