separated out the bits of my config so I can have two computers

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_zen;
-
-  networking.hostName = "artemis"; # Define your hostname.
   networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
   # Configure network proxy if necessary
@@ -83,22 +76,31 @@
   };
   
   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";
-  }
-];
+    {
+      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;
@@ -132,6 +134,7 @@
     hydrapaper
     nextcloud-client
     fastfetch
+    epson-escpr2
   ];
   
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
@@ -158,6 +161,9 @@
     })
   ];
   
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="1235", ATTR{power/control}="on"
+  '';
 
   # Enable the OpenSSH daemon.
   # services.openssh.enable = true;