I was recently wondering why each Hydra eval of full nixpkgs now takes rougly one hour, and now I see there are apparently builds done during it. See https://hydra.nixos.org/jobset/nixos/gcc-7#tabs-errors (the branch only has a couple lines of changes when compared to master)

• find the culprit