these 3 derivations will be built:
  /nix/store/bh6aazns4cj45zl1v6q6ylwkpwlfdp98-source.drv
  /nix/store/dwx8229q2f41v99ab8azv81f79a038vi-plannotator-0.28.49.drv
  /nix/store/g7pb7hfxswdk05srpzfah88v3lyjkb08-check-plannotator.drv