these 4 derivations will be built:
  /nix/store/8cyyhsmf3pycbn2q6ldmy424r64l16jv-closure-info.drv
  /nix/store/cf3fyli8ml2xqlfhrjvwjljnncy16jgj-clan-cli-source.drv
  /nix/store/nn5y933krdznnyppyqi690w55ndgbnrz-clan-cli.drv
  /nix/store/dmr61a0icms7cd2q270v0mzrp6mvw2v5-check-vars.drv