1 files changed, 15 insertions, 12 deletions
diff --git a/nixos/modules/services/continuous-integration/hydra/default.nix b/nixos/modules/services/continuous-integration/hydra/default.nix
index ccb7cc21734eb..cc5de97d6d10d 100644
--- a/nixos/modules/services/continuous-integration/hydra/default.nix
+++ b/nixos/modules/services/continuous-integration/hydra/default.nix
@@ -258,8 +258,6 @@ in
         uid = config.ids.uids.hydra-www;
       };
 
-    nix.trustedUsers = [ "hydra-queue-runner" ];
-
     services.hydra.extraConfig =
       ''
         using_frontend_proxy = 1
@@ -277,16 +275,21 @@ in
 
     environment.variables = hydraEnv;
 
-    nix.extraOptions = ''
-      keep-outputs = true
-      keep-derivations = true
-
-
-    '' + optionalString (versionOlder (getVersion config.nix.package.out) "2.4pre") ''
-      # The default (`true') slows Nix down a lot since the build farm
-      # has so many GC roots.
-      gc-check-reachability = false
-    '';
+    nix.settings = mkMerge [
+      {
+        keep-outputs = true;
+        keep-derivations = true;
+        trusted-users = [ "hydra-queue-runner" ];
+      }
+
+      (mkIf (versionOlder (getVersion config.nix.package.out) "2.4pre")
+        {
+          # The default (`true') slows Nix down a lot since the build farm
+          # has so many GC roots.
+          gc-check-reachability = false;
+        }
+      )
+    ];
 
     systemd.services.hydra-init =
       { wantedBy = [ "multi-user.target" ];