WIP/backup: Deployment batch antigravity

users/admin/default.nix

@@ -26,7 +26,9 @@ in {
         config.users.groups.wheel.name # Enable 'sudo' for the user.
       ];
       initialPassword = "ChangeMe";
-      openssh.authorizedKeys.keys = cfg.authorizedKeys;
+      openssh.authorizedKeys.keyFiles = [
+        config.sops.secrets.user_keys_admin.path
+      ];
       packages = with pkgs; [
         curl
         git

users/backup/default.nix

@@ -12,9 +12,8 @@ in {
       extraGroups = [
         "docker" # Allow access to the docker socket.
       ];
-      openssh.authorizedKeys.keys = [
-        # Hugo
-        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICms6vjhE9kOlqV5GBPGInwUHAfCSVHLI2Gtzee0VXPh"
+      openssh.authorizedKeys.keyFiles = [
+        config.sops.secrets.user_keys_backup.path
       ];
     };
   };

users/deploy/default.nix

@@ -3,7 +3,19 @@
 let
   cfg = config.homelab.users.deploy;
 in {
-  options.homelab.users.deploy.enable = lib.mkEnableOption "user Deploy";
+  options.homelab.users.deploy = {
+    enable = lib.mkEnableOption "user Deploy";
+
+    authorizedKeys = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [];
+      description = ''
+        Additional SSH public keys authorized for the deploy user.
+        The CI runner key should be provided as a base key; personal
+        workstation keys can be appended here per host or globally.
+      '';
+    };
+  };
 
   config = lib.mkIf cfg.enable {
     users = {
@@ -15,12 +27,15 @@ in {
         isSystemUser = true;
         home = "/var/empty";
         shell = pkgs.bashInteractive;
-        openssh.authorizedKeys.keys = [
-          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPrG+ldRBdCeHEXrsy/qHXIJYg8xQXVuiUR0DxhFjYNg"
+        openssh.authorizedKeys.keyFiles = [
+          config.sops.secrets.user_keys_deploy.path
         ];
       };
     };
 
+    # Allow the deploy user to push closures to the nix store
+    nix.settings.trusted-users = [ "deploy" ];
+
     security.sudo.extraRules = [
       {
         groups = [