I’m the maintainer of GNU Zile, and I’d like to fix the Hydra build (which is a great resource, thanks, NixOS community!) I posted an issue a month ago and have had no reply: https://github.com/NixOS/hydra/issues/828
I tried the IRC channel and @energizer directed me here.
I don’t know much about Hydra, so I could be way off base, but from what I can tell Zile is built and cached, when I do nix-shell -p zile I get 2.4.14.
I’m not directly knowledgeable here, but I asked around a bit for you today.
It sounds like what you needed was either the owner of the jobset (listed as ludo on the jobset; I guess from a search that this is Ludovic Courtès <ludo@gnu.org>) or a hydra admin. As of a moment ago, an admin has re-enabled zile-master for you and a new eval has already succeeded.
Thanks a million for your help! Ludo was in touch a while ago but was unable to help, but Eelco Dolstra has stepped in to get things going again for me.