Cleaned up gAluminum defaults. Added Pipewire. Added nvidia-offload

hosts/gAluminum/default.nix

@@ -1,8 +1,16 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
-let hostname = "gAluminum";
+let
+  hostname = "gAluminum";
+  nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    exec -a "$0" "$@"
+  '';
 in {
-  imports = [ ./hardware.nix ./wireguard.nix ];
+  imports = [ ./hardware.nix ./wireguard.nix ./sound.nix ];
 
   boot = {
     supportedFilesystems = [ "ntfs" ];
@@ -12,6 +20,8 @@ in {
       systemd-boot.enable = true;
     };
 
+    kernelPackages = pkgs.linuxPackages_latest;
+
     initrd.luks.devices = {
       root = {
         device = "/dev/disk/by-uuid/c2bac3a6-0999-4e1d-a676-bf4bcafee2d4";
@@ -30,20 +40,35 @@ in {
   };
 
   time.timeZone = "Europe/London";
-  virtualisation.virtualbox.host.enable = true;
-  virtualisation.virtualbox.host.enableExtensionPack = true;
-  users.extraGroups.vboxusers.members = [ "giulio" ];
-
-  services.printing.enable = true;
-  sound.enable = true;
-
-  hardware = {
-    pulseaudio.enable = true;
-    ledger.enable = true;
+  virtualisation.virtualbox.host = {
+    enable = true;
+    enableExtensionPack = true;
+  };
+
+  users.extraGroups = {
+    vboxusers.members = [ "giulio" ];
+    video.members = [ "giulio" ];
+  };
+
+  services = {
+    printing.enable = true;
+    xserver.videoDrivers = [ "nvidia" ];
+    teamviewer.enable = true;
+    davfs2.enable = true;
+  };
+
+  hardware = {
+    ledger.enable = true;
+    nvidia = {
+      prime = {
+        offload.enable = true;
+        intelBusId = "PCI:0:2:0";
+        nvidiaBusId = "PCI:1:0:0";
+      };
+    };
   };
 
-  services.teamviewer.enable = true;
   programs.steam.enable = true;
-  environment.systemPackages = with pkgs; [ efibootmgr ];
+  environment.systemPackages = with pkgs; [ efibootmgr nvidia-offload ];
   system.stateVersion = "21.05"; # Did you read the comment?
 }

hosts/gAluminum/hardware.nix

@@ -23,6 +23,4 @@
   };
 
   swapDevices = [ ];
-
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
 }

hosts/gAluminum/sound.nix

@@ -0,0 +1,36 @@
+{
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    media-session.config.bluez-monitor.rules = [
+      {
+        # Matches all cards
+        matches = [{ "device.name" = "~bluez_card.*"; }];
+        actions = {
+          "update-props" = {
+            "bluez5.reconnect-profiles" = [ "hfp_hf" "hsp_hs" "a2dp_sink" ];
+            # mSBC is not expected to work on all headset + adapter combinations.
+            "bluez5.msbc-support" = true;
+            # SBC-XQ is not expected to work on all headset + adapter combinations.
+            "bluez5.sbc-xq-support" = true;
+          };
+        };
+      }
+      {
+        matches = [
+          # Matches all sources
+          {
+            "node.name" = "~bluez_input.*";
+          }
+          # Matches all outputs
+          { "node.name" = "~bluez_output.*"; }
+        ];
+        actions = { "node.pause-on-idle" = false; };
+      }
+    ];
+  };
+  security.rtkit.enable = true;
+  hardware.pulseaudio.enable = false;
+}