fix linux-builder ccache

systems/aarch64-darwin/macbook-pro/default.nix

@@ -32,11 +32,19 @@
   };
 
   nix = {
-    linux-builder.enable = true;
+    linux-builder = {
+      enable = true;
+      config = ({ pkgs, ... }:
+        {
+          systemd.tmpfiles.rules = [
+            "d /var/cache/ccache 0770 root nixbld -"
+          ];
+        });
+    };
   };
 
   nix-rosetta-builder = {
-    enable = true;
+    enable = false;
     onDemand = true;
   };
 }