these 3 derivations will be built:
  /nix/store/w16p6dfsph5zajc0avnbkg8ckmw2mzvh-clan-cli-source.drv
  /nix/store/ypyl54pjjc2kadcxq7vq4q1q7ihfsllq-clan-cli.drv
  /nix/store/s8029hh9i6ldhq62zzcmcass07x0f63a-nix-shell.drv