cachix: add CUDA cache

hosts/nullbox/configuration.nix

@@ -25,7 +25,7 @@
         };
       }
 
-      (lib.genAttrs [ "/.btrfsroot" "/" "/home" ] ( fs: {
+      (lib.genAttrs [ "/.btrfsroot" "/" "/home" "/nix" ] ( fs: {
         options = [ "compress=zstd" ];
       }))
     ];

hosts/nullbox/hardware-configuration.nix

@@ -19,6 +19,17 @@
       options = [ "subvol=nixos/@root" ];
     };
 
+  fileSystems."/nix" =
+    { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
+      fsType = "btrfs";
+      options = [ "subvol=nixos/@nix" ];
+    };
+
+  fileSystems."/.btrfsroot" =
+    { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
+      fsType = "btrfs";
+    };
+
   fileSystems."/home" =
     { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
       fsType = "btrfs";
@@ -30,12 +41,6 @@
       fsType = "vfat";
     };
 
-  fileSystems."/.btrfsroot" =
-    { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
-      fsType = "btrfs";
-      options = [ "subvol=/" ];
-    };
-
   swapDevices = [ ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
@@ -44,9 +49,10 @@
   # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
   networking.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
+  # networking.interfaces.tailscale0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wg0.useDHCP = lib.mkDefault true;
   # networking.interfaces.wlp3s0.useDHCP = lib.mkDefault true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
   hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
 }

system/cachix.nix

@@ -13,10 +13,12 @@ in
     nix.settings = {
       substituters = [
         "https://hyprland.cachix.org"
+        "https://cuda-maintainers.cachix.org"
       ];
 
       trusted-public-keys = [
         "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+        "cuda-maintainers.cachix.org-1:0dq3bujKpuEPMCX6U4WylrUDZ9JyUG0VpVZa7CNfq5E="
       ];
     };
   };