these 2 derivations will be built:
  /nix/store/a3s120dgjnb8ynslgaw7s9mf65qaf3wq-gitnexus-1.6.12.drv
  /nix/store/pzgdxsjfr5x8di8l8zjd6qyc5mmgdw66-check-gitnexus.drv