some vr stuff

home-manager/vr.nix

@@ -0,0 +1,22 @@
+{ pkgs, config, ... }:
+{
+  #xdg.configFile."openvr/openvrpaths.vrpath".text = ''
+  #  {
+  #    "config" :
+  #    [
+  #      "~/.local/share/Steam/config"
+  #    ],
+  #    "external_drivers" : null,
+  #    "jsonid" : "vrpathreg",
+  #    "log" :
+  #    [
+  #      "~/.local/share/Steam/logs"
+  #    ],
+  #    "runtime" :
+  #    [
+  #      "${pkgs.opencomposite}/lib/opencomposite"
+  #    ],
+  #    "version" : 1
+  #  }
+  #'';
+}

modules/hardware/vr.nix

@@ -0,0 +1,80 @@
+{ pkgs, config, ... }:
+let
+  # https://wiki.nixos.org/wiki/VR#Patching_AMDGPU_to_allow_high_priority_queues
+  amdgpu =
+    { pkgs
+    , lib
+    , kernel ? pkgs.linuxPackages_latest.kernel
+    }:
+
+    pkgs.stdenv.mkDerivation {
+      pname = "amdgpu-kernel-module";
+      inherit (kernel) src version postPatch nativeBuildInputs;
+
+      kernel_dev = kernel.dev;
+      kernelVersion = kernel.modDirVersion;
+
+      modulePath = "drivers/gpu/drm/amd/amdgpu";
+
+      buildPhase = ''
+        BUILT_KERNEL=$kernel_dev/lib/modules/$kernelVersion/build
+
+        cp $BUILT_KERNEL/Module.symvers .
+        cp $BUILT_KERNEL/.config        .
+        cp $kernel_dev/vmlinux          .
+
+        make "-j$NIX_BUILD_CORES" modules_prepare
+        make "-j$NIX_BUILD_CORES" M=$modulePath modules
+      '';
+
+      installPhase = ''
+        make \
+          INSTALL_MOD_PATH="$out" \
+          XZ="xz -T$NIX_BUILD_CORES" \
+          M="$modulePath" \
+          modules_install
+      '';
+
+      meta = {
+        description = "AMD GPU kernel module";
+        license = lib.licenses.gpl3;
+      };
+    };
+  amdgpu-kernel-module = pkgs.callPackage amdgpu {
+    # Make sure the module targets the same kernel as your system is using.
+    kernel = config.boot.kernelPackages.kernel;
+  };
+in
+{
+  #programs.envision = {
+  #  enable = true;
+  #  openFirewall = true;
+  #};
+  #services.monado = {
+  #  enable = true;
+  #  defaultRuntime = true; # Register as default OpenXR runtime
+  #};
+  #environment.systemPackages = with pkgs; [
+  #  monado
+  #];
+  #systemd.user.services.monado.environment = {
+  #  STEAMVR_LH_ENABLE = "1";
+  #  XRT_COMPOSITOR_COMPUTE = "1";
+  #};
+  #  programs.git = {
+  #    enable = true;
+  #    lfs.enable = true;
+  #  };
+  hardware.steam-hardware.enable = true;
+  boot.extraModulePackages = [
+    (amdgpu-kernel-module.overrideAttrs (_: {
+      patches = [
+        (pkgs.fetchpatch {
+          name = "cap_sys_nice_begone.patch";
+          url = "https://github.com/Frogging-Family/community-patches/raw/master/linux61-tkg/cap_sys_nice_begone.mypatch";
+          hash = "sha256-Y3a0+x2xvHsfLax/uwycdJf3xLxvVfkfDVqjkxNaYEo=";
+        })
+      ];
+    }))
+  ];
+}

systems/pc/configuration.nix

@@ -18,6 +18,7 @@
     ../../modules/misc/faster-boot-time.nix
     #../../modules/hardware/ryzenmonitor.nix
     ../../modules/networkmanager.nix
+    ../../modules/hardware/vr.nix
   ];
 
   custom = {
@@ -170,11 +171,11 @@
   # disable until CVE-2024-47176, CVE-2024-47076, CVE-2024-47175, and CVE-2024-47177 is fixed
   services.printing.enable = false;
   services.printing.drivers = [ pkgs.brlaser ];
-  services.avahi = {
-    enable = false;
-    nssmdns4 = true;
-    openFirewall = true;
-  };
+  #services.avahi = {
+  #  enable = false;
+  #  nssmdns4 = true;
+  #  openFirewall = true;
+  #};
 
   # Enable automatic login for the user.
   #services.xserver.displayManager.autoLogin.enable = true;

users/kopatz/home.nix

@@ -32,6 +32,7 @@
     ../../home-manager/stylix.nix
     ../../home-manager/mpv.nix
     ../../home-manager/discord-theme.nix
+    ../../home-manager/vr.nix
     inputs.nixvim.homeManagerModules.nixvim
   ];