these 3 derivations will be built:
  /nix/store/lwl9f6c47jj6ngqlqpazzhymqn4haa5b-source.drv
  /nix/store/nd0zqi51f4a5z1a3xyqazippakmxc52v-gno-2.7.0.drv
  /nix/store/w90wkvbmhynpm222z740sjwwrl6ia5p2-check-gno.drv