these 3 derivations will be built:
  /nix/store/8ydk6pc78ksbxzy08j3s9azx5rpp7dq8-clan-cli-source.drv
  /nix/store/5gd72b0hqibjhln8mbwy38sd38bpjw42-clan-cli.drv
  /nix/store/aqqlvc4k7kj2a8zhavmlqx0sfvagl5i3-nix-shell.drv