these 3 derivations will be built:
  /nix/store/mlhzpfiiiz3b5bifc456ai3nwp3fl5ng-clan-cli-source.drv
  /nix/store/pc9qczwy8skxncr7m52d5d5wc5plmdg9-clan-cli.drv
  /nix/store/0228pjphn1k2m8bih1g1nb33vrpmiq6w-nix-shell.drv