these 3 derivations will be built:
  /nix/store/9jb0kklkhpx8d29blk4ln0an0629k92v-source.drv
  /nix/store/h998xszr0c7zcgl7iwr5zh5v93r9vs5n-collie-1.22.4.drv
  /nix/store/ml2cx8rhhsqgx5rc9ms7c0v7zzgvn096-check-collie.drv