these 3 derivations will be built:
  /nix/store/dfp8bdil67f1w1z4091zi1lnf6jwidps-clan-cli-source.drv
  /nix/store/90fc9s8ziz9whhjypf5sl77qsrxps6zp-clan-cli.drv
  /nix/store/r5vf17cy1qhk97hg9rj7s6fz9xv1f9am-nix-shell.drv