these 4 derivations will be built:
  /nix/store/cynw6cjmc0apzppc1c75jmkgx3njqvqq-clan-cli-source.drv
  /nix/store/bsvzqqf3x22fcjpzy6i0jrcqj372m16c-clan-cli.drv
  /nix/store/xnvagbq123pks83q2s3y1nf2qfbqykck-closure-info.drv
  /nix/store/s70dkpr5rzfb3r1ffnbsrjjj0djw6ls7-check-vars.drv