these 2 derivations will be built:
  /nix/store/a6nig2dkcbhp7nm8r2fym4x0dacj0aps-coco-1.2.18+192728.aa2238062732.drv
  /nix/store/mh4s6i1vvhhmbld97z6ayw9p0kpmi983-check-coco.drv