these 3 derivations will be built:
  /nix/store/mcjsvqmi2yd0rlbvclqvhplidw7s2y95-source.drv
  /nix/store/dlz3ax3a9ym01z0jbqxmfwvglj07mgl3-plannotator-0.28.60.drv
  /nix/store/1y66wj15pdc9amhdkrcz6zmqd8hss0nb-check-plannotator.drv