these 3 derivations will be built:
  /nix/store/4py5nfd8fyzg5d8xxbj56wswjcyxd82r-clan-cli-source.drv
  /nix/store/12w5dfaaqprcsafr4g6ary97cmbbycsn-clan-cli.drv
  /nix/store/3girvwc2sz3q1g39yngvsqgwjhi9kqlz-nix-shell.drv