more sops + eldrid

hosts/eldrid/configuration.nix

@@ -2,6 +2,7 @@
 {
   pkgs,
   inputs,
+  config,
   ...
 }: {
   imports = with inputs; [
@@ -13,13 +14,29 @@
     ./programs.nix
     ./stylix.nix
     ./users.nix
+    ./sops.nix
   ];
 
   desktop = {
     hyprland.enable = true;
   };
 
-  nix.settings.experimental-features = ["nix-command" "flakes"];
+  nix = {
+    settings.experimental-features = ["nix-command" "flakes"];
+    distributedBuilds = true;
+    settings.builders-use-substitutes = true;
+    buildMachines = [
+      {
+        hostName = "dunamis";
+        sshUser = "remotebuild";
+        system = "x86_64-linux";
+        sshKey = config.sops.secrets."ssh-private-eldrid-rmbuild".path;
+        supportedFeatures = ["nixos-test" "big-parallel" "kvm" "benchmark"];
+        publicHostKey = builtins.readFile "${inputs.mysecrets}/ssh/ssh_host_ed25519_dunamis.base64";
+      }
+    ];
+  };
+
   system.stateVersion = "25.05";
 
   time.timeZone = "Europe/Kyiv";