these 3 derivations will be built:
  /nix/store/4qw2r1fw00g3g71nw3iasz6a7vs7q3qh-tgrab-0.1.1-vendor.drv
  /nix/store/hcrv56am901261qywk0038izarcr70qz-tgrab-0.1.1.drv
  /nix/store/2zg5ajc61n0y9f0mg1lic8fwnxvbz82a-check-tgrab.drv