distributed builders!

Reviewed-on: #227

flake.nix

@@ -148,7 +148,7 @@
       systems = [
         "x86_64-linux"
         # disable arm for now as hydra isn't set up for it
-        # "aarch64-linuxa
+        "aarch64-linux"
       ];
 
       forEachSystem = lib.genAttrs systems;

systems/palatine-hill/hydra.nix

@@ -18,12 +18,13 @@ in
       allowed-uris = github: gitlab: git+https:// git+ssh:// https://
       builders-use-substitutes = true
     '';
+    distributedBuilds = true;
 
     buildMachines = [
       {
         hostName = "localhost";
         maxJobs = 2;
-        protocol = "ssh-ng";
+        protocol = null;
         speedFactor = 2;
         systems = [
           "x86_64-linux"
@@ -55,7 +56,6 @@ in
       notificationSender = "hydra@alicehuston.xyz";
       gcRootsDir = "/ZFS/ZFS-primary/hydra";
       useSubstitutes = true;
-      buildMachinesFiles = [ ];
       minimumDiskFree = 50;
       minimumDiskFreeEvaluator = 100;
       extraConfig = ''