these 3 derivations will be built:
  /nix/store/0lc1ak6ryxyyzlbdn5qp6xmy48jhk1xd-source.drv
  /nix/store/jn7nqj2421yj635ilb52n0yk63x0ys37-collie-1.22.4.drv
  /nix/store/phqmm596wm9rhbljpyw7m5qi50h1l6m8-check-collie.drv