lib: init modules and move mkHosts modules there

This helps to split up the code in mkHosts and creates a place where we
can store modules relevent to devos. It will also be easier to remove
unecessary parts of each module in the future when they are all
compartmentalized.

flake.lock

@@ -81,7 +81,7 @@
         "utils": "utils_2"
       },
       "locked": {
-        "narHash": "sha256-7Y6SqdLWr/g8tqNjqakRbS0KVIA/yzRm3D/RnoTAuzE=",
+        "narHash": "sha256-9mdO1eRrHz/3EAr3M8Ugdc8T6qWu4UbogafqO4mruKo=",
         "path": "./lib",
         "type": "path"
       },

lib/devos/mkHosts.nix

@@ -4,70 +4,18 @@
 let
   defaultSystem = "x86_64-linux";
 
-  experimentalFeatures = [
-    "flakes"
-    "nix-command"
-    "ca-references"
-    "ca-derivations"
-  ];
-
-  modules = {
-    modOverrides = { config, overrideModulesPath, ... }:
-      let
-        inherit (overrides) modules disabledModules;
-      in
-      {
-        disabledModules = modules ++ disabledModules;
-        imports = map
-          (path: "${overrideModulesPath}/${path}")
-          modules;
+  modules = with lib.modules; {
+    modOverrides = modOverrides { inherit overrides; };
+    hmDefaults = hmDefaults {
+      inherit extern;
+      inherit (self) homeModules;
+      userSuites = suites.user;
     };
-
-    global = { config, pkgs, ... }: {
-      home-manager = {
-        useGlobalPkgs = true;
-        useUserPackages = true;
-
-        extraSpecialArgs = extern.userSpecialArgs // { suites = suites.user; };
-        sharedModules = extern.userModules ++ (builtins.attrValues self.homeModules);
+    globalDefaults = globalDefaults {
+      inherit self nixos inputs multiPkgs;
     };
-      users.mutableUsers = lib.mkDefault false;
-
-      hardware.enableRedistributableFirmware = lib.mkDefault true;
-
-      nix.nixPath = [
-        "nixpkgs=${nixos}"
-        "nixos-config=${self}/lib/compat/nixos"
-        "home-manager=${inputs.home}"
-      ];
-
-      nixpkgs.pkgs = lib.mkDefault multiPkgs.${config.nixpkgs.system};
-
-      nix.registry = {
-        devos.flake = self;
-        nixos.flake = nixos;
-        override.flake = inputs.override;
-      };
-
-      nix.package = pkgs.nixFlakes;
-
-      nix.extraOptions = ''
-        experimental-features = ${lib.concatStringsSep " "
-          experimentalFeatures
-        }
-      '';
-
-      system.configurationRevision = lib.mkIf (self ? rev) self.rev;
-    };
-
-    # Everything in `./modules/list.nix`.
-    flakeModules = { imports = builtins.attrValues self.nixosModules ++ extern.modules; };
-
-    cachix = let rootCachix = "${self}/cachix.nix"; in
-      if builtins.pathExists rootCachix
-      then rootCachix
-      else { }
-    ;
+    cachix = cachix { inherit self; };
+    flakeModules = flakeModules { inherit self extern; };
   };
 
   specialArgs = extern.specialArgs // { suites = suites.system; };

lib/flake.nix

@@ -16,6 +16,7 @@
           attrs = import ./attrs.nix { lib = nixpkgs.lib // self; };
           lists = import ./lists.nix { lib = nixpkgs.lib // self; };
           strings = import ./strings.nix { lib = nixpkgs.lib // self; };
+          modules = import ./modules.nix { lib = nixpkgs.lib // self; };
         in
 
         utils.lib
@@ -51,6 +52,7 @@
             filterPackages;
           inherit (lists) pathsIn;
           inherit (strings) rgxToString;
+          inherit modules;
         }
       );
 

lib/modules.nix

@@ -0,0 +1,74 @@
+{ lib }:
+{
+  modOverrides = { overrides }:
+    { config, overrideModulesPath, ... }:
+    let
+      inherit (overrides) modules disabledModules;
+    in
+    {
+      disabledModules = modules ++ disabledModules;
+      imports = map
+        (path: "${overrideModulesPath}/${path}")
+        modules;
+    };
+
+  hmDefaults = { userSuites, extern, homeModules }: {
+    home-manager = {
+      useGlobalPkgs = true;
+      useUserPackages = true;
+
+      extraSpecialArgs = extern.userSpecialArgs // { suites = userSuites; };
+      sharedModules = extern.userModules ++ (builtins.attrValues homeModules);
+    };
+  };
+
+  globalDefaults = { self, nixos, inputs, multiPkgs }:
+    let
+      experimentalFeatures = [
+        "flakes"
+        "nix-command"
+        "ca-references"
+        "ca-derivations"
+      ];
+    in
+    { config, pkgs, ... }: {
+      users.mutableUsers = lib.mkDefault false;
+
+      hardware.enableRedistributableFirmware = lib.mkDefault true;
+
+      nix.nixPath = [
+        "nixpkgs=${nixos}"
+        "nixos-config=${self}/lib/compat/nixos"
+        "home-manager=${inputs.home}"
+      ];
+
+      nixpkgs.pkgs = lib.mkDefault multiPkgs.${config.nixpkgs.system};
+
+      nix.registry = {
+        devos.flake = self;
+        nixos.flake = nixos;
+        override.flake = inputs.override;
+      };
+
+      nix.package = pkgs.nixFlakes;
+
+      nix.extraOptions = ''
+        experimental-features = ${lib.concatStringsSep " "
+          experimentalFeatures
+        }
+      '';
+
+      system.configurationRevision = lib.mkIf (self ? rev) self.rev;
+    };
+
+  cachix = { self }:
+    let rootCachix = "${self}/cachix.nix"; in
+    if builtins.pathExists rootCachix
+    then rootCachix
+    else { };
+
+  flakeModules = { self, extern }: { imports = builtins.attrValues self.nixosModules ++ extern.modules; };
+
+
+}
+