refactor(configurations): centralise home-manager config

nix/configurations.nix

@@ -7,7 +7,14 @@
 let
   inherit (lib) nixosSystem;
   inherit (lib.attrsets) mapAttrs;
+  inherit (cfg.lib.modules) forAllUsers';
   cfg = config.flake;
+  globalCfg = {
+    useGlobalPkgs = true;
+    useUserPackages = true;
+    sharedModules = [ cfg.modules.homeManager.default ];
+    users = forAllUsers' (name: _: cfg.homes.${name});
+  };
   hosts = cfg.manifest.hosts or { };
   mkConfigurations =
     class: hosts:
@@ -15,13 +22,11 @@ let
       name: value:
       if class == "nixos" then
         nixosSystem {
-          specialArgs = {
-            inherit inputs;
-            inherit (cfg) manifest;
-            hostName = name;
-          };
+          specialArgs.hostName = name;
           modules = [
             cfg.modules.nixos.default
+            inputs.home-manager.nixosModules.home-manager
+            { home-manager = globalCfg; }
             (value.extraCfg or { })
           ];
         }
@@ -30,5 +35,6 @@ let
     ) hosts;
 in
 {
+  imports = [ inputs.home-manager.flakeModules.home-manager ];
   flake.nixosConfigurations = mkConfigurations "nixos" hosts.nixos;
 }

nix/modules/home-manager.nix

@@ -1,18 +0,0 @@
-{ inputs, config, ... }:
-let
-  inherit (cfg.lib.modules) forAllUsers';
-  cfg = config.flake;
-  hm = inputs.home-manager;
-  globalCfg = {
-    useGlobalPkgs = true;
-    useUserPackages = true;
-    extraSpecialArgs = { inherit (cfg) manifest; };
-    sharedModules = [ cfg.modules.homeManager.default ];
-    users = forAllUsers' (name: _: cfg.homes.${name});
-  };
-in
-{
-  imports = [ hm.flakeModules.home-manager ];
-  flake.modules.nixos.default.imports = [ hm.nixosModules.home-manager ];
-  flake.modules.nixos.default.config.home-manager = globalCfg;
-}