Merge pull request #721 from grahamc/one-by-one

hydra-evaluator: add a 'ONE_AT_A_TIME' evaluator style

src/lib/Hydra/Controller/Jobset.pm

@@ -226,7 +226,7 @@ sub updateJobset {
     my ($nixExprPath, $nixExprInput) = nixExprPathFromParams $c;
 
     my $enabled = int($c->stash->{params}->{enabled});
-    die if $enabled < 0 || $enabled > 2;
+    die if $enabled < 0 || $enabled > 3;
 
     my $shares = int($c->stash->{params}->{schedulingshares} // 1);
     error($c, "The number of scheduling shares must be positive.") if $shares <= 0;