@@ -975,12 +975,33 @@ "nixpkgs"
         ],
         "nixvim": "nixvim",
         "nur": "nur",
+        "rosetta-builder": "rosetta-builder",
         "scriptura": "scriptura",
         "searchix": "searchix",
         "srvos": "srvos",
         "stylix": "stylix",
         "tg-auth": "tg-auth",
         "vpsadminos": "vpsadminos"
+      }
+    },
+    "rosetta-builder": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1770491098,
+        "narHash": "sha256-ZfhynJqgV3A9hEivcgOEZa+TZnJPc26lIUjzKsSchgI=",
+        "owner": "cpick",
+        "repo": "nix-rosetta-builder",
+        "rev": "50e6070082e0b4fbaf67dd8f346892a1a9ed685c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cpick",
+        "repo": "nix-rosetta-builder",
+        "type": "github"
       }
     },
     "scriptura": {

@@ -21,6 +21,10 @@ home-manager = {
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    rosetta-builder = {
+      url = "github:cpick/nix-rosetta-builder";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     nur = {
       url = "github:nix-community/nur";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -169,6 +173,7 @@ nixpkgs.overlays = [
               angrr.overlays.default
             ];
           }
+          rosetta-builder.darwinModules.default
           srvos.darwinModules.desktop
           angrr.darwinModules.angrr
           ./system/hosts/marvin.nix

@@ -92,13 +92,16 @@ cores = 8;
   };
 
   nix.linux-builder = {
+    enable = false; # will be needed for building the rosetta image
+    systems = [ "aarch64-linux" ];
+    speedFactor = 8;
+  };
+
+  nix-rosetta-builder = {
     enable = true;
-    systems = [
-      "aarch64-linux"
-    ];
+    memory = "8GiB";
+    onDemand = true;
+    onDemandLingerMinutes = 180;
     speedFactor = 8;
-    config = {
-      virtualisation.cores = 4;
-    };
   };
 }