rp5: finally working nix-sdcard, enableing remote build on the nix system now

modules/nixos/nix/default.nix

@@ -45,6 +45,10 @@ in
       nixfmt-rfc-style
       nix-prefetch-git
       nix-du
+
+      nix-weather
+      nix-index
+      nix-output-monitor
     ];
 
     nix =

modules/nixos/submodules/basics/default.nix

@@ -36,6 +36,9 @@ in
       nix = {
         enable = true;
         extra-substituters = {
+          "https://cache.lix.systems" = {
+            key = "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=";
+          };
           "https://nix-community.cachix.org" = {
             key = "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=";
           };

systems/aarch64-linux/nixberry/default.nix

@@ -3,7 +3,6 @@
   lib,
   modulesPath,
   namespace,
-  pkgs,
   ...
 }:
 
@@ -17,8 +16,63 @@ in
     raspberry-pi-5
   ];
 
-  raspberry-pi-nix.board = "bcm2711";
+  users.users.remotebuild = {
+    isNormalUser = true;
+    createHome = false;
+    group = "remotebuild";
 
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJYZjG+XPNoVHVdCel5MK4mwvtoFCqDY1WMI1yoU71Rd root@yggdrasil"
+    ];
+  };
+
+  users.groups.remotebuild = { };
+
+  nix = {
+    nrBuildUsers = 64;
+    settings = {
+      trusted-users = [ "remotebuild" ];
+
+      min-free = 10 * 1024 * 1024;
+      max-free = 200 * 1024 * 1024;
+
+      max-jobs = "auto";
+      cores = 0;
+    };
+  };
+
+  systemd.services.nix-daemon.serviceConfig = {
+    MemoryAccounting = true;
+    MemoryMax = "90%";
+    OOMScoreAdjust = 500;
+  };
+
+  networking = {
+    interfaces.wlan0 = {
+      ipv4.addresses = [
+        {
+          address = "192.168.178.2";
+          prefixLength = 24;
+        }
+      ];
+    };
+    defaultGateway = {
+      address = "192.168.178.1";
+      interface = "wlan0";
+    };
+
+    wireless = {
+      enable = true;
+      networks = {
+        "Slow Internet" = {
+          pskRaw = "521b6d766b27276c29c7b6bec5b495b1c52bf88b0682277e65b37dc649b630de";
+        };
+      };
+    };
+  };
+
+  # Pi specific stuff  
+  raspberry-pi-nix.board = "bcm2712";
   hardware = {
     raspberry-pi = {
       config = {
@@ -53,19 +107,14 @@ in
   };
 
   ${namespace} = {
-    submodules = {
-      basics = enabled;
-    };
-
-    apps.cli-apps.helix = {
-      pkg = pkgs.helix;
-    };
+    submodules.basics = enabled;
 
     system = {
-      boot = {
-        # Raspberry Pi requires a specific bootloader.
-        enable = mkForce false;
-      };
+      # cachemiss for webkit gtk
+      hardware.networking.enable = mkForce false;
+
+      # rasberry pi uses alternative boot settings
+      boot.enable = mkForce false;
     };
 
     user.trustedPublicKeys = [

systems/x86_64-linux/yggdrasil/default.nix

@@ -33,9 +33,11 @@ in
   };
 
   nix = {
+    distributedBuilds = true;
+    settings.builders-use-substitutes = true;
     buildMachines = [
       {
-        hostName = "pi";
+        hostName = "nixberry";
         sshUser = "remotebuild";
         sshKey = "/root/.ssh/remotebuild";
         systems = [ "aarch64-linux" ];
@@ -44,18 +46,10 @@ in
         supportedFeatures = [
           "nixos-test"
           "big-parallel"
+          "kvm"
         ];
       }
     ];
-
-    distributedBuilds = true;
-    settings = {
-      trusted-users = [
-        "@wheel"
-        "remotebuild"
-      ];
-      trusted-public-keys = [ "nixberry:25s8/rxsolAXg4skjnecCeqcfkxYE9FGCPG5UcXsFlw=" ];
-    };
   };
 
   ${namespace} = {