this derivation will be built:
  /nix/store/z580v1bq6f3m4fiw7wh7304pmxzb6qkd-skarnos.drv
this path will be fetched (7.6 MiB download, 58.5 MiB unpacked):
  /nix/store/x38hwp3s070vql8yqqww1rbvwl5nv7ng-ShellCheck-0.11.0