guitarix with sound setup

hosts/gaming/default.nix

@@ -6,10 +6,10 @@
     ../../modules/japanese.nix
     ../../modules/gc.nix
     ../../modules/steam.nix
+    ../../modules/guitar.nix
   ];
 
   networking.hostName = "gaming";
-  boot.kernelPackages = pkgs.linuxPackages_zen;
 
   services.displayManager.gdm.enable = true;
   services.desktopManager.gnome.enable = true;

modules/guitar.nix

@@ -0,0 +1,55 @@
+{ pkgs, config, ... }:
+{
+  # PipeWire with JACK support
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    pulse.enable = true;
+    jack.enable = true;
+    wireplumber.enable = true;
+
+    # Low-latency: ~5ms at 48kHz
+    extraConfig.pipewire."92-low-latency" = {
+      "context.properties" = {
+        "default.clock.rate"        = 48000;
+        "default.clock.quantum"     = 128;
+        "default.clock.min-quantum" = 64;
+        "default.clock.max-quantum" = 512;
+      };
+    };
+
+    extraConfig.pipewire-pulse."92-low-latency" = {
+      "pulse.properties" = {
+        "pulse.min.req"     = "64/48000";
+        "pulse.default.req" = "64/48000";
+        "pulse.max.req"     = "128/48000";
+      };
+    };
+  };
+
+  # Real-time scheduling
+  security.rtkit.enable = true;
+  security.pam.loginLimits = [
+    { domain = "@audio"; item = "memlock"; type = "-"; value = "unlimited"; }
+    { domain = "@audio"; item = "rtprio";  type = "-"; value = "95"; }
+  ];
+
+  users.users.fredrikr.extraGroups = [ "audio" ]; # <-- change yourname
+
+  # Zen kernel = better real-time perf
+  boot.kernelPackages = pkgs.linuxPackages_zen;
+  boot.kernelParams = [
+    "threadirqs"
+    "usbcore.autosuspend=-1"  # prevent USB interface from sleeping
+  ];
+  powerManagement.cpuFreqGovernor = "performance";
+
+  environment.systemPackages = with pkgs; [
+    qpwgraph          # visual patchbay - connect guitar in → amp → out
+    pavucontrol       # set Scarlett to "Pro Audio" profile
+    guitarix          # amp sim, use instead of Ableton
+    lsp-plugins       # EQ, compressor, etc.
+    alsa-scarlett-gui # Scarlett hardware mixer
+  ];
+}
+