Quick way to filter just the workspace root without packages under it?

[rhyek]

In the root directory, running something with --filter {.} means every package under . also gets selected. Looking for something short and generic this worked for me: --filter $(cat package.json | jq -r '.name'), but I'm probably being dumb and there is a better way, hopefully. Thanks.

Edit: Better yet, is there a way to modify a filter so that it does not include packages under it?