these 4 derivations will be built:
  /nix/store/8wbfashz7zipy1kkwyfr9v6s4h8nf8wd-source.drv
  /nix/store/ws98qb53lwh50x9zbx4390ragwwhs3b9-aven-0.1.25-vendor-staging.drv
  /nix/store/5092qxsp7f0bdgnbbvscw2d9628ibalh-aven-0.1.25-vendor.drv
  /nix/store/vpx4ibs3g6nn4yv0dhfh23lcg059i0hr-aven-0.1.25.drv