athena low latency

artemis.nix

@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+  imports = [
+    ./configuration.nix
+    ./artemis-hardware-configuration.nix
+  ];
+
+  networking.hostName = "artemis";
+}

athena-hardware-configuration.nix

@@ -0,0 +1,31 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/c5614bab-0755-48a2-9cb0-0dc31b98371f";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/1965-42F3";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

athena.nix

@@ -0,0 +1,19 @@
+{ ... }:
+
+{
+  imports = [
+    ./configuration.nix
+    ./athena-hardware-configuration.nix
+  ];
+
+  networking.hostName = "athena";
+  
+  services.pipewire.extraConfig.pipewire."10-low-latency" = {
+    "context.properties" = {
+      "default.clock.rate" = 48000;
+      "default.clock.quantum" = 64;
+      "default.clock.min-quantum" = 64;
+      "default.clock.max-quantum" = 64;
+    };
+  };
+}

configuration.nix

@@ -5,19 +5,12 @@
 { config, pkgs, ... }:
 
 {
-  imports =
-    [ # Include the results of the hardware scan.
-      ./hardware-configuration.nix
-    ];
-
   # Bootloader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
   # Use latest kernel.
-  boot.kernelPackages = pkgs.linuxPackages_latest;
-
-  networking.hostName = "artemis"; # Define your hostname.
+  boot.kernelPackages = pkgs.linuxPackages_zen;
   networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
   # Configure network proxy if necessary
@@ -82,6 +75,33 @@
     #media-session.enable = true;
   };
   
+  musnix.enable = true;
+  musnix.kernel.realtime = false;   # force non-RT while we tune everything else
+  musnix.rtirq.enable = true;       # IRQ thread priority tuning — helps USB audio specifically
+  musnix.rtirq.nameList = "snd usb"; # prioritize sound + USB IRQs
+  
+  # realtime audio shenanigans 
+  security.pam.loginLimits = [
+    {
+      domain = "@audio";
+      type = "-";
+      item = "rtprio";
+      value = "95";
+    }
+    {
+      domain = "@audio";
+      type = "-";
+      item = "memlock";
+      value = "unlimited";
+    }
+  ];
+  
+  systemd.user.services.pipewire.serviceConfig.CPUAffinity = "8-15";
+  systemd.user.services.wireplumber.serviceConfig.CPUAffinity = "8-15";
+  systemd.services.rtkit-daemon.serviceConfig.CPUAffinity = "8-15";
+  
+  programs.nix-ld.enable = true;
+
   # Enable touchpad support (enabled default in most desktopManager).
   # services.xserver.libinput.enable = true;
 
@@ -89,7 +109,7 @@
   users.users."cybrneko" = {
     isNormalUser = true;
     description = "cybrneko";
-    extraGroups = [ "networkmanager" "wheel" ];
+    extraGroups = [ "networkmanager" "wheel" "audio" ];
     packages = with pkgs; [
     #  thunderbird
     ];
@@ -114,6 +134,8 @@
     hydrapaper
     nextcloud-client
     fastfetch
+    epson-escpr2
+    gnome-tweaks
   ];
   
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
@@ -130,6 +152,20 @@
 
   services.flatpak.enable = true;
   
+  # Enable Nintendo Switch Cartridge dumping
+
+  services.udev.packages = [
+    (pkgs.writeTextFile{
+      name = "nxdumptool-udev";
+      destination = "/etc/udev/rules.d/71-nxdumptool.rules";
+      text = builtins.readFile ./udev/71-nxdumptool.rules;
+    })
+  ];
+  
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="1235", ATTR{power/control}="on"
+  '';
+
   # Enable the OpenSSH daemon.
   # services.openssh.enable = true;
 

flake.lock

@@ -21,6 +21,24 @@
         "type": "github"
       }
     },
+    "musnix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1777848538,
+        "narHash": "sha256-Dj51C0NWsglqRrCpdmMr2nFiYacFOid1Tor4H9yG2HY=",
+        "owner": "musnix",
+        "repo": "musnix",
+        "rev": "8548782f0d1d0928daa3fffde8a008f72219a3f3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "musnix",
+        "repo": "musnix",
+        "type": "github"
+      }
+    },
     "nix-flatpak": {
       "locked": {
         "lastModified": 1780908363,
@@ -37,6 +55,22 @@
       }
     },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1777268161,
+        "narHash": "sha256-bxrdOn8SCOv8tN4JbTF/TXq7kjo9ag4M+C8yzzIRYbE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "1c3fe55ad329cbcb28471bb30f05c9827f724c76",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1782847225,
         "narHash": "sha256-JC9PjqKYG9ve5U8aDOLQipp3+KLANBHUvGdLZlxzdKI=",
@@ -55,8 +89,9 @@
     "root": {
       "inputs": {
         "home-manager": "home-manager",
+        "musnix": "musnix",
         "nix-flatpak": "nix-flatpak",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },

flake.nix

@@ -4,6 +4,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-26.05";
     nix-flatpak.url = "github:gmodena/nix-flatpak";
+    musnix.url = "github:musnix/musnix";
     
     home-manager = {
       url = "github:nix-community/home-manager/release-26.05";
@@ -11,30 +12,46 @@
     };
   };
 
-  outputs = { self, nixpkgs, home-manager, nix-flatpak, ... }:
+  outputs = { self, nixpkgs, home-manager, nix-flatpak, musnix, ... }:
     let
       system = "x86_64-linux";
+
+      commonModules = [
+        musnix.nixosModules.musnix
+
+        home-manager.nixosModules.home-manager
+
+        {
+          home-manager.useGlobalPkgs = true;
+          home-manager.useUserPackages = true;
+
+          home-manager.users.cybrneko = { pkgs, ... }: {
+            imports = [
+              nix-flatpak.homeManagerModules.nix-flatpak
+              ./home.nix
+              ./users/cybrneko.nix
+            ];
+          };
+        }
+      ];
     in {
-      nixosConfigurations.nixos = nixpkgs.lib.nixosSystem {
-        inherit system;
+      nixosConfigurations = {
+        artemis = nixpkgs.lib.nixosSystem {
+          inherit system;
 
-        modules = [
-          ./configuration.nix
+          modules = [
+            ./artemis.nix
+          ] ++ commonModules;
+        };
 
-          home-manager.nixosModules.home-manager
+        athena = nixpkgs.lib.nixosSystem {
+          inherit system;
 
-          {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-            home-manager.users.cybrneko = { pkgs, ... }: {
-              imports = [
-                nix-flatpak.homeManagerModules.nix-flatpak
-                ./home.nix
-                ./users/cybrneko.nix
-              ];
-            }; 
-          }
-        ];
+          modules = [
+            ./athena.nix
+          ] ++ commonModules;
+        };
       };
     };   
 }
+

home.nix

@@ -38,14 +38,35 @@
       ];
 
       disabled-extensions = [ ];
+      
+      always-show-log-out = true;
+      
+      favorite-apps = [
+        "io.gitlab.librewolf-community.desktop"
+        "im.fluffychat.Fluffychat.desktop"
+        "dev.vencord.Vesktop.desktop"
+        "steam.desktop"
+        "org.gnome.Console.desktop"
+        "org.gnome.Nautilus.desktop"
+        "com.renoise.Renoise.desktop"
+        "com.lwks.Lightworks.desktop"
+        "com.bitwig.BitwigStudio.desktop"
+        "org.gimp.GIMP.desktop"
+        "org.libreoffice.LibreOffice.writer.desktop"
+        "org.libreoffice.LibreOffice.calc.desktop"
+      ];
     };
 
     "org/gnome/shell/extensions/caffeine" = {
-      show-indicator = [ "always" ];
+      show-indicator = "always";
     };
 
     "org/gnome/shell/extensions/status-tray" = {
-      icon-mode = [ "original" ];
+      icon-mode = "original";
+    };
+    
+    "org/gnome/desktop/interface" = {
+      enable-hot-corners = false;
     };
   };
 

udev/71-nxdumptool.rules

@@ -0,0 +1,2 @@
+# Nintendo SDK debugger, which nxdumptool presents itself as
+SUBSYSTEM=="usb", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="3000", TAG+="uaccess"