these 3 derivations will be built:
  /nix/store/0s10g9h0fk2km8r1v01sqcn694r81frf-source.drv
  /nix/store/cjiqjkxcljq1kf8s9bqn76j2z5q7b707-hunk-0.23.0.drv
  /nix/store/3kd7lmqrjh8fflj6pfb3l683l419cys5-check-hunk.drv