these 3 derivations will be built:
  /nix/store/pn5i9gnc56wi0gmm2x42s2kcp6k8rgkv-tgrab-0.1.1-vendor-staging.drv
  /nix/store/2lfgbz0lzxr80swwn6hq62dh18yna9vz-tgrab-0.1.1-vendor.drv
  /nix/store/0hzlrz37nxx4q2rril8w3q7d3vvsal0w-tgrab-0.1.1.drv