Multi system and pkgs cleanup

flake.nix

@@ -39,25 +39,35 @@
   outputs = inputs:
     let
       lib = inputs.nixpkgs.lib;
-      gen = import ./generator.nix { inherit inputs; };
+      linuxSystems = [ "x86_64-linux" "aarch64-linux" ];
+      supportedSystems = linuxSystems ++ [ "x86_64-darwin" "aarch64-darwin" ];
+      overlays = import ./overlays { inherit inputs; };
+      mkPkgs = system:
+        import inputs.nixpkgs {
+          inherit system;
+          inherit overlays;
+          config.allowUnfree = true;
+        };
+      gen = import ./generator.nix { inherit inputs mkPkgs supportedSystems; };
       systemsDir = ./systems;
       isIgnoredSystemDir = name: lib.hasPrefix "_" name || lib.hasPrefix "." name;
-      systemNames = lib.attrNames (lib.filterAttrs
-        (name: type:
+      systemNames = lib.attrNames (
+        lib.filterAttrs (
+          name: type:
           type == "directory"
           && !isIgnoredSystemDir name
-          && builtins.pathExists (systemsDir + "/${name}/cfg.nix"))
-        (builtins.readDir systemsDir));
+          && builtins.pathExists (systemsDir + "/${name}/cfg.nix")
+        ) (builtins.readDir systemsDir)
+      );
       hostsByType = systemType:
-        lib.filter
-          (host: (import (systemsDir + "/${host}/cfg.nix")).syscfg.type == systemType)
-          systemNames;
+        lib.filter (host: ((import (systemsDir + "/${host}/cfg.nix")).syscfg.type or "nixos") == systemType) systemNames;
       generateHosts = systemType:
-        lib.genAttrs
-          (hostsByType systemType)
-          (host: gen.generate { inherit host; });
+        lib.genAttrs (hostsByType systemType) (host: gen.generate { inherit host; });
     in {
-      devShells = import ./shells { inherit inputs; };
+      devShells = import ./shells {
+        inherit inputs mkPkgs;
+        supportedSystems = linuxSystems;
+      };
 
       nixosConfigurations = generateHosts "nixos";
       darwinConfigurations = generateHosts "macos";

generator.nix

@@ -1,70 +1,92 @@
-{ inputs, ... }: {
+{ inputs, mkPkgs, supportedSystems, ... }:
+{
   generate = { host }:
     let
       syscfg = import ./systems/${host}/cfg.nix;
       nameValuePair = name: value: { inherit name value; };
-    in ({
-      "nixos" = inputs.nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        specialArgs = { inherit inputs; };
-        modules = [
+      systemType = syscfg.syscfg.type or "nixos";
+      defaultSystem =
+        {
+          nixos = "x86_64-linux";
+          macos = "x86_64-darwin";
+          home = "x86_64-linux";
+        }
+        .${systemType} or (throw "Unsupported system type: ${systemType}");
+      requestedSystem = syscfg.syscfg.system or defaultSystem;
+      system =
+        if builtins.elem requestedSystem supportedSystems then
+          requestedSystem
+        else
+          throw "Unsupported system '${requestedSystem}' for host '${host}'";
+      users = syscfg.syscfg.users or [ ];
+      mkLinuxHomeImports =
+        userConfig:
+        [
           ./modules/shared/syscfg
-          ./modules/shared/sops
-          ./modules/nixos
+          ./modules/shared/colors
+          ./modules/home
           syscfg
-          ./systems/${host}
-          inputs.sops-nix.nixosModules.sops
-          inputs.home-manager.nixosModules.home-manager
-
-          inputs.nixos-wsl.nixosModules.wsl
-          inputs.vscode-server.nixosModules.default
-
-          {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-            home-manager.extraSpecialArgs = { inherit inputs; };
-            home-manager.users = builtins.listToAttrs (map (userConfig:
-              nameValuePair userConfig.username {
-                imports = [
-                  ./modules/shared/syscfg
-                  ./modules/shared/colors
-                  ./modules/home
-                  syscfg
-                  { usercfg = userConfig; }
-                  inputs.nix-colors.homeManagerModule
-                  inputs.sops-nix.homeManagerModules.sops
-                ];
-              }) syscfg.syscfg.users);
-          }
+          { usercfg = userConfig; }
+          inputs.nix-colors.homeManagerModule
+          inputs.sops-nix.homeManagerModules.sops
         ];
+      mkDarwinHomeImports = [ inputs.nix-colors.homeManagerModule inputs.sops-nix.homeManagerModules.sops ];
+      mkHomeUsers = importsForUser:
+        builtins.listToAttrs (
+          map (userConfig: nameValuePair userConfig.username { imports = importsForUser userConfig; }) users
+        );
+      mkHomeManager = importsForUser: {
+        home-manager.useGlobalPkgs = true;
+        home-manager.useUserPackages = true;
+        home-manager.extraSpecialArgs = { inherit inputs; };
+        home-manager.users = mkHomeUsers importsForUser;
       };
+      defaultUser =
+        builtins.head (
+          builtins.filter (user: user.username == syscfg.syscfg.defaultUser) users
+          ++ [ { username = syscfg.syscfg.defaultUser; } ]
+        );
+    in
+    (
+      {
+        "nixos" = inputs.nixpkgs.lib.nixosSystem {
+          inherit system;
+          specialArgs = { inherit inputs; };
+          modules = [
+            ./modules/shared/syscfg
+            ./modules/shared/sops
+            ./modules/nixos
+            syscfg
+            ./systems/${host}
+            inputs.sops-nix.nixosModules.sops
+            inputs.home-manager.nixosModules.home-manager
 
-      "macos" = inputs.darwin.lib.darwinSystem {
-        system = "x86_64-darwin";
-        modules = [
-          ./modules/shared/syscfg
-          ./modules/shared/sops
-          syscfg
-          ./systems/${host}
-          inputs.sops-nix.nixosModules.sops
-          inputs.home-manager.darwinModules.home-manager
-          {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-            home-manager.extraSpecialArgs = { inherit inputs; };
-            home-manager.users = builtins.listToAttrs (map (userConfig:
-              nameValuePair userConfig.username {
-                imports = [
-                  inputs.nix-colors.homeManagerModule
-                  inputs.sops-nix.homeManagerModules.sops
-                ];
-              }) syscfg.syscfg.users);
-          }
-        ];
-      };
-      "home" = inputs.home-manager.lib.homeManagerConfiguration {
-        modules = [ ./modules/home ];
-      };
-      _ = throw "Unsupported system";
-    }.${syscfg.syscfg.type});
+            inputs.nixos-wsl.nixosModules.wsl
+            inputs.vscode-server.nixosModules.default
+
+            (mkHomeManager mkLinuxHomeImports)
+          ];
+        };
+
+        "macos" = inputs.darwin.lib.darwinSystem {
+          inherit system;
+          modules = [
+            ./modules/shared/syscfg
+            ./modules/shared/sops
+            syscfg
+            ./systems/${host}
+            inputs.sops-nix.darwinModules.sops
+            inputs.home-manager.darwinModules.home-manager
+            (mkHomeManager (_: mkDarwinHomeImports))
+          ];
+        };
+        "home" = inputs.home-manager.lib.homeManagerConfiguration {
+          pkgs = mkPkgs system;
+          extraSpecialArgs = { inherit inputs; };
+          modules = mkLinuxHomeImports defaultUser;
+        };
+        _ = throw "Unsupported system";
+      }
+      .${systemType}
+    );
 }

modules/nixos/system/nix/default.nix

@@ -3,12 +3,8 @@
     permittedInsecurePackages = [ ];
     allowUnfree = true;
     android_sdk.accept_license = true;
-    packageOverrides = pkgs: rec {
-      custom = import ../../../../packages { inherit pkgs; };
-    };
-
   };
-  nixpkgs.overlays = import ../../../../overlays { inherit inputs pkgs; };
+  nixpkgs.overlays = import ../../../../overlays { inherit inputs; };
   nix = {
     package = pkgs.nixVersions.stable;
     extraOptions = ''

modules/shared/syscfg/default.nix

@@ -1,11 +1,15 @@
-{ inputs, lib, ... }:
+{ lib, ... }:
 let
   systemsDir = ../../../systems;
-  systemNames = lib.attrNames (lib.filterAttrs 
-    (name: type: type == "directory" && builtins.pathExists (systemsDir + "/${name}/cfg.nix")) 
-    (builtins.readDir systemsDir));
-
-
+  isIgnoredSystemDir = name: lib.hasPrefix "_" name || lib.hasPrefix "." name;
+  systemNames = lib.attrNames (
+    lib.filterAttrs
+      (name: type:
+        type == "directory"
+        && !isIgnoredSystemDir name
+        && builtins.pathExists (systemsDir + "/${name}/cfg.nix"))
+      (builtins.readDir systemsDir)
+  );
 in with lib; {
   options.usercfg = import ./user.nix  {inherit lib;};
   options.syscfg = {
@@ -14,6 +18,11 @@ in with lib; {
       type = types.enum [ "nixos" "macos" "home" ];
       default = "nixos";
     };
+    system = mkOption {
+      type = types.enum [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      default = "x86_64-linux";
+      description = "Nix platform used to evaluate this host.";
+    };
     defaultUser = mkOption { type = types.str; };
     make = import ./make.nix {inherit lib;};
     net = import ./net.nix {inherit lib;};

overlays/default.nix

@@ -1,15 +1,14 @@
-{ inputs, pkgs, ... }:
+{ inputs, ... }:
 [
   (final: prev: {
     #openttd-jgrpp = import ./openttd-jgrpp { inherit final prev; };
     #yarn-berry = import ./yarn-berry { inherit final prev; };
     #eww = import ./eww { inherit final prev; };
     # ags =  import ./ags { inherit final prev; };
+    custom = import ../packages { pkgs = final; };
     wine = final.unstable.wineWow64Packages.unstableFull;
     unstable = import inputs.nixUnstable {
-      
       system = final.stdenv.hostPlatform.system;
-      stdenv.hostPlatform.system = final.stdenv.hostPlatform.system;
       config.allowUnfree = true;
     };
   })

shells/default.nix

@@ -1,13 +1,9 @@
-{ inputs, ... }:
-let
-  forEachSystem =
-    inputs.nixpkgs.lib.genAttrs [ "aarch64-linux" "x86_64-linux" ];
-in forEachSystem (system:
-  let
-    overlays = import ../overlays { inherit inputs pkgs; };
-    overrides = { custom = import ../packages { inherit pkgs; }; };
-    pkgs = import inputs.nixpkgs { inherit system overlays; } // overrides;
+{ inputs, mkPkgs, supportedSystems, ... }:
+inputs.nixpkgs.lib.genAttrs supportedSystems (
+  system:
+  let pkgs = mkPkgs system;
   in {
     default = import ./devsh { inherit pkgs; };
     devsh = import ./devsh { inherit pkgs; };
-  })
+  }
+)

systems/asgard/cfg.nix

@@ -3,5 +3,6 @@
     hostname = "asgard";
     defaultUser = "sora";
     type = "macos";
+    system = "x86_64-darwin";
   };
 }