these 5 derivations will be built:
  /nix/store/9c8har4vbiw76v331awsvabmv1sn3ifs-closure-info.drv
  /nix/store/sgdgak720q7w9dq8akz26d1aqq02qx7d-clan-runtime.drv
  /nix/store/qwz62nn6qmkrqp77qs9bvkjvk94pr0lz-clan-cli-source.drv
  /nix/store/b4qcvz21d3mpd54np8rcyvic10xznpgc-clan-cli.drv
  /nix/store/l9lqlpnj2mlr8mv17r36as99d430ak2y-check-vars.drv