these 3 derivations will be built:
  /nix/store/6izr99r3r40rlghh3wca62hlad0rkmgh-clan-cli-source.drv
  /nix/store/kykqvjldkfvkwii296xfhrcyywlmapy6-clan-cli.drv
  /nix/store/mw53igf6qp7yyg8gzkh4pywwpdpsx3bk-nix-shell.drv