Handle builds with multiple outputs correctly in Hydra channels

src/lib/Hydra/Base/Controller/ListBuilds.pm

@@ -41,6 +41,7 @@ sub nix : Chained('get_builds') PathPart('channel') CaptureArgs(1) {
                 ->search_literal("exists (select 1 from buildproducts where build = me.id and type = 'nix-build')")
                 ->search({}, { columns => [@buildListColumns, 'drvpath', 'description', 'homepage']
                              , join => ["buildoutputs"]
+                             , order_by => ["me.id", "buildoutputs.name"]
                              , '+select' => ['buildoutputs.path', 'buildoutputs.name'], '+as' => ['outpath', 'outname'] });
         }
         else {