these 3 derivations will be built:
  /nix/store/84jr2hn6byrzlh4x75lca4rszz8526hg-clan-cli-source.drv
  /nix/store/nlfl5nyrp8nazp38z6ix7z053hixvk9q-clan-cli.drv
  /nix/store/c1hnppz90jsdn661lqsfsisfpm57gpd1-nix-shell.drv