these 4 derivations will be built:
  /nix/store/jcg5la9iij0h6f9dn4gkc02pzc8gysgj-clan-runtime.drv
  /nix/store/j5cxkq980hykjf28r6knf5yg1ra2hc7c-clan-cli-source.drv
  /nix/store/4mkw68jiqm61wfwp6akvr0l838cz3xwb-clan-cli.drv
  /nix/store/rkvbzjrv1chp8pzh52grpa8dsv2cmdyw-nix-shell.drv