these 3 derivations will be built:
  /nix/store/3xrndzikjm086l05n11vhnyqcqyid5q4-source.drv
  /nix/store/i3jhx8mjqbb7rh591pjk3dkc42pl1490-gno-2.8.0.drv
  /nix/store/1ysvza7pwxia216dmxgb9ig1pwian84f-check-gno.drv