these 5 derivations will be built:
  /nix/store/0wr5sydpw1f02wmp0mdfymzjj1z5v80z-clan-runtime.drv
  /nix/store/7d5007c58hvnjgg2x42fyp8rmczhj5w4-clan-cli-source.drv
  /nix/store/856klxys9f3w2742shvz3hqis63qbn3w-clan-cli.drv
  /nix/store/d8kgsja3zhgj5sgzsr5fqmmdrhvxibq1-closure-info.drv
  /nix/store/6zqfnk8rpkcfyhwpikrfz8yd1fhrpz07-check-vars.drv