slight refactor/rocm packages

flake.nix

@@ -49,22 +49,18 @@
         };
       });
 
-      mkPkgs = system: pkgs: extraOverlays:
-        import pkgs {
-          inherit system;
+      commonNixpkgsConfig = {
         config.allowUnfree = true;
         config.allowAliases = true;
-          overlays = extraOverlays ++ (lib.attrValues self.overlays);
-        };
-
-      pkgsFor = eachSystem (system:
-        mkPkgs system nixpkgs [
+        overlays = [
           self.overlays.default
           inputs.cachyos-kernel.overlays.pinned
           inputs.niri.overlays.niri
           inputs.nix-vscode-extensions.overlays.default
-        ]
-      );
+        ] ++ (lib.attrValues self.overlays);
+      };
+
+      pkgsFor = eachSystem (system: import nixpkgs ({ inherit system; } // commonNixpkgsConfig));
     in {
       lib = lib.my;
 
@@ -82,6 +78,6 @@
 
       nixosModules = mapModulesRec ./modules import;
 
-      nixosConfigurations = mapHosts ./hosts { inherit pkgsFor; };
+      nixosConfigurations = mapHosts ./hosts { inherit commonNixpkgsConfig; };
     };
 }

lib/nixos.nix

@@ -11,7 +11,7 @@
 in rec {
   mkHost = path: {
     system,
-    pkgsFor,
+    commonNixpkgsConfig,
     ...
   }:
     nixosSystem {
@@ -21,8 +21,7 @@ in rec {
 
       modules = [
         {
-          nixpkgs.pkgs = pkgsFor.${system};
-          nixpkgs.hostPlatform = lib.mkDefault system;
+          nixpkgs = commonNixpkgsConfig // { hostPlatform = lib.mkDefault system; };
           networking.hostName =
             mkDefault (removeSuffix ".nix" (baseNameOf path));
         }

modules/hardware/graphics/amdgpu.nix

@@ -10,10 +10,15 @@ in {
   };
 
   config = mkIf cfg.enable {
+    # opencl
     hardware.amdgpu.opencl.enable = true;
+    nixpkgs.config.rocmSupport = true;
+
+    # oc
     hardware.amdgpu.overdrive.enable = cfg.overclock;
     services.lact.enable = cfg.overclock;
 
+    # top
     environment.systemPackages = with pkgs; [ amdgpu_top ];
 
     # radv > amdvlk

modules/hardware/graphics/i915.nix

@@ -13,12 +13,14 @@ in {
   };
 
   config = mkIf cfg.enable {
+    # top
     environment.systemPackages = with pkgs; [ intel-gpu-tools ];
     hardware.intel-gpu-tools.enable = true;
 
     boot.kernelParams = [
       # enable gpu virtualization
       "i915.enable_gvt=1"
+      # explicitly enable power saving options (framebuffer compression)
     ] ++ optional cfg.powersave "i915.enable_fbc=1";
   };
 }