these 3 derivations will be built:
  /nix/store/zp01qkc7xnw7plk9ird676zvjbw316zi-source.drv
  /nix/store/6v8akah6m46ig8dg47l50kl6c66z1dar-collie-1.22.4.drv
  /nix/store/69aa210679szlhcimmjnfaqn2kzpnzs0-check-collie.drv