refactor(system): flatten

inputs/system/modules/base/host/hardware/features/audio.nix

@@ -0,0 +1,111 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf;
+  inherit (lib.generators) toLua;
+  inherit (lib.lists) elem optionals;
+  # inherit (builtins) elem;
+  features = config.systemModules.host.hardware.features;
+  hasBT = (elem "bluetooth" features);
+in
+
+{
+  config = mkIf (elem "audio" features) {
+    hardware.pulseaudio.enable = !config.services.pipewire.enable;
+    security.rtkit.enable = config.services.pipewire.enable;
+    services.pipewire = 
+    let
+      quantum = 64;
+      rate = 48000;
+      qr = "${toString quantum}/${toString rate}";
+    in
+    {
+      enable = true;
+
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+
+      # Low latency module provided by notashelf/nyx
+      extraConfig.pipewire."99-lowlatency" = {
+        context = {
+          properties.default.clock.min-quantum = quantum;
+          modules = [
+            {
+              name = "libpipewire-module-rtkit";
+              flags = ["ifexists" "nofail"];
+              args = {
+                nice.level = -15;
+                rt = {
+                  prio = 88;
+                  time.soft = 200000;
+                  time.hard = 200000;
+                };
+              };
+            }
+            {
+              name = "libpipewire-module-protocol-pulse";
+              args = {
+                server.address = ["unix:native"];
+                pulse.min = {
+                  req = qr;
+                  quantum = qr;
+                  frag = qr;
+                };
+              };
+            }
+          ];
+
+          stream.properties = {
+            node.latency = qr;
+            resample.quality = 1;
+          };
+        };
+      };
+
+      wireplumber = {
+        enable = true;
+        configPackages = let
+          matches = toLua {
+            multiline = false;
+            indent = false;
+          } [[["node.name" "matches" "alsa_output.*"]]];
+
+          apply_properties = toLua {} {
+            "audio.format" = "S32LE";
+            "audio.rate" = rate * 2;
+            "api.alsa.period-size" = 2;
+          };
+        in
+          [
+            (pkgs.writeTextDir "share/lowlatency.lua.d/99-alsa-lowlatency.lua" ''
+              alsa_monitor.rules = {
+                {
+                  matches = ${matches};
+                  apply_properties = ${apply_properties};
+                }
+              }
+            '')
+          ]
+          ++ optionals hasBT [
+            (pkgs.writeTextDir "share/bluetooth.lua.d/51-bluez-config.lua" /* lua */ ''
+              bluez_monitor.properties = {
+                ["bluez5.enable-sbc-xq"] = true,
+                ["bluez5.enable-msbc"] = true,
+                ["bluez5.enable-hw-volume"] = true,
+                ["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]"
+              }
+            '')
+          ];
+      };
+    };
+
+    systemd.user.services = {
+      pipewire.wantedBy = ["default.target"];
+      pipewire-pulse.wantedBy = ["default.target"];
+    };
+  };
+} 
+
+

inputs/system/modules/base/host/hardware/features/default.nix

@@ -6,14 +6,16 @@ in
 
 {
   imports = [
-    ./bluetooth
-    ./backlight
-    ./battery
-    ./ssd
+    ./bluetooth.nix
+    ./backlight.nix
+    ./battery.nix
+    ./ssd.nix
+    ./audio.nix
+    ./video.nix
   ];
 
   options.systemModules.host.hardware.features = mkOption {
-    type = with types; listOf (enum ["bluetooth" "backlight" "battery" "ssd"]);
+    type = with types; listOf (enum ["audio" "video" "bluetooth" "backlight" "battery" "ssd"]);
     default = [];
     description = "What extra hardware feature system modules to use";
   };

inputs/system/modules/base/host/hardware/features/video.nix

@@ -0,0 +1,31 @@
+{ lib, config, pkgs, ... }:
+
+let
+  inherit (lib) mkIf;
+  inherit (builtins) elem;
+  isx86Linux = pkgs: with pkgs.stdenv; hostPlatform.isLinux && hostPlatform.isx86;
+  features = config.systemModules.host.hardware.features;
+in
+
+{
+  config = mkIf (elem "video" features) {
+    hardware = {
+      opengl = {
+        enable = true;
+        driSupport = true;
+        driSupport32Bit = isx86Linux pkgs;
+      };
+    };
+    xdg.portal = {
+      enable = true;
+      xdgOpenUsePortal = true;
+      extraPortals = [
+        pkgs.xdg-desktop-portal-gtk
+      ];
+      config = {
+        common.default = ["gtk"];
+        hyprland.default = ["gtk" "hyprland"];
+      };
+    };
+  };
+}