reorganize hardware

modules/dev/default.nix

@@ -1,18 +0,0 @@
-{ lib, config, ... }:
-
-with lib;
-let
-  cfg = config.modules.dev;
-in {
-  options.modules.dev = {
-    enable = mkEnableOption "General development utilities";
-  };
-
-  config = mkIf cfg.enable {
-    programs.direnv = {
-      enable = true;
-      silent = true;
-      nix-direnv.enable = true;
-    };
-  };
-}

modules/hardware/graphics/amdgpu.nix

@@ -0,0 +1,27 @@
+{ pkgs, config, lib, inputs, ... }:
+
+with lib;
+let
+  cfg = config.modules.hardware.graphics.amdgpu;
+in {
+  options.modules.hardware.graphics.amdgpu = {
+    enable = mkEnableOption "Enable AMD graphics drivers, used in conjuction with nixos-hardware";
+    overclock = mkEnableOption "Enable overclocking on AMD graphics drivers";
+  };
+
+  config = mkIf cfg.enable {
+    hardware.amdgpu.opencl.enable = true;
+    hardware.amdgpu.overdrive.enable = cfg.overclock;
+    services.lact.enable = cfg.overclock;
+
+    environment.systemPackages = with pkgs; [ amdgpu_top ];
+
+    environment.variables = {
+      # radv > amdvlk
+      AMD_VULKAN_ICD = "RADV";
+      # hwaccel
+      LIBVA_DRIVER_NAME = "radeonsi";
+      VDPAU_DRIVER = "radeonsi";
+    };
+  };
+}

modules/hardware/graphics/i915.nix

@@ -0,0 +1,24 @@
+{ pkgs, config, lib, inputs, ... }:
+
+with lib;
+let
+  cfg = config.modules.hardware.graphics.i915;
+in {
+  options.modules.hardware.graphics.i915 = {
+    enable = mkEnableOption "Enable Intel i915 graphics drivers, used in conjuction with nixos-hardware";
+    powersave = mkEnableOption {
+      default = config.modules.core.laptop;
+      description = "Enable intel i915-specific powersaving tweaks";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [ intel-gpu-tools ];
+    hardware.intel-gpu-tools.enable = true;
+
+    boot.kernelParams = [
+      # enable gpu virtualization
+      "i915.enable_gvt=1"
+    ] ++ optional cfg.i915.powersave "i915.enable_fbc=1";
+  };
+}