these 3 derivations will be built:
  /nix/store/fj6a4v2sklxq3h9nl9qn6vk7mwvp8yqb-clan-cli-source.drv
  /nix/store/jhcllc2sjznss1gqxw26045zamsnf4xi-clan-cli.drv
  /nix/store/ldf9alsgjcgvcmxfi87nrh6cz12d74zn-nix-shell.drv