these 2 derivations will be built:
  /nix/store/4dvncjsfpf4zdvadgif2g903l2iw4lpp-coco-1.2.45+061229.2a20c0482251.drv
  /nix/store/dr247hkyjp3fpab2b9vng6dyzilv98ng-check-coco.drv