these 3 derivations will be built:
  /nix/store/3g3iy0p0kvagsg044a3j6wmdyxgd4c9m-source.drv
  /nix/store/pqqlbcjidwnn6l27lmnl1bxb95xr18ix-plannotator-0.28.4.drv
  /nix/store/9wfqsxfdc99c64kp3b5yg0h2lrcnj9s9-check-plannotator.drv