From 123bee1db599818f34f880a756a44339c57c7ade Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 4 Mar 2020 15:16:26 +0100
Subject: [PATCH] Restore job type checking

---
 src/hydra-eval-jobs/hydra-eval-jobs.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/hydra-eval-jobs/hydra-eval-jobs.cc b/src/hydra-eval-jobs/hydra-eval-jobs.cc
index f27fde1d..4cbe5a1c 100644
--- a/src/hydra-eval-jobs/hydra-eval-jobs.cc
+++ b/src/hydra-eval-jobs/hydra-eval-jobs.cc
@@ -194,6 +194,11 @@ static void worker(
                 reply["attrs"] = std::move(attrs);
             }
 
+            else if (v->type == tNull)
+                ;
+
+            else throw TypeError("attribute '%s' is %s, which is not supported", attrPath, showType(*v));
+
         } catch (EvalError & e) {
             reply["error"] = filterANSIEscapes(e.msg(), true);
         }