these 2 derivations will be built:
  /nix/store/r7l4qbqvry333f0d8v06cvbg8dg531fl-coco-1.1.104+041358.66de1c44636f.drv
  /nix/store/zdswckwv5f2s4q4nqcz86lpqjjl8g465-check-coco.drv