Merge pull request 'distributed builders!' (#228) from feature/hydra-arm into main

Reviewed-on: #228

systems/palatine-hill/hydra.nix

@@ -18,6 +18,7 @@ in
       allowed-uris = github: gitlab: git+https:// git+ssh:// https://
       builders-use-substitutes = true
     '';
+    distributedBuilds = true;
 
     buildMachines = [
       {
@@ -55,7 +56,6 @@ in
       notificationSender = "hydra@alicehuston.xyz";
       gcRootsDir = "/ZFS/ZFS-primary/hydra";
       useSubstitutes = true;
-      buildMachinesFiles = [ ];
       minimumDiskFree = 50;
       minimumDiskFreeEvaluator = 100;
       extraConfig = ''