Do not require recipe and empty checkout in job definition

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Job.hs b/src/Job.hs
index b40273f..1d4ade3 100644
--- a/src/Job.hs
+++ b/src/Job.hs
@@ -382,7 +382,7 @@ runJob job uses checkoutPath jdir = do
         copyRecursive (aoutStorePath aout) target
 
     bracket (liftIO $ openFile (jdir </> "log") WriteMode) (liftIO . hClose) $ \logs -> do
-        forM_ (jobRecipe job) $ \p -> do
+        forM_ (fromMaybe [] $ jobRecipe job) $ \p -> do
             (Just hin, _, _, hp) <- liftIO $ createProcess_ "" p
                 { cwd = Just checkoutPath
                 , std_in = CreatePipe