these 5 derivations will be built:
  /nix/store/c1c2b80r0chwc4kw90iislqb0hz017g6-clan-runtime.drv
  /nix/store/567cjba1j1bvxyikynh8bxx5d1i1c60f-clan-cli-source.drv
  /nix/store/4w5arw95k238qccmmn9bni248zq298zf-clan-cli.drv
  /nix/store/zaxspf4mfii7rk0fayk3zc4hbyhd1n99-tofu.drv
  /nix/store/lvv7phz4qj3icsdaq966hz2396q0vnz6-dns.drv