Creating / adding a private package repository

Is there guide on how to setup a private repo and add it to unity?

We have a bunch of packages now that I'd like to see in the package manager whether they're installed or not.
I *think* what I need is to use verdaccio, make a repo of my packages and tell unity to look there as well as the unity repo. How do I tell Unity where my repo is?

If I understand correctly, this thread talks about telling packages which repos to get their dependencies from in specific situations, but I just want Unity to know about the existence of my private repo and show those packages alongside the Unity ones.

Have I missed something obvious about how to set this up?

Thanks!

 

Ahaha, I just realised that it explains it on the Scoped Packages doc page!
Somehow I read it as editing a package's manifest and not the unity project manifest.

Giving that a shot now

 

Update: of course this worked