Something that is super super important to me is editable installs, and local references to those editable installs. Often I have several editable packages set up in a virtualenv which I think of as like my "base" virtualenv.

One reason I struggled with Rye earlier is that it kind of felt like this wasn't entirely supported, possibly because I couldn't parse the information on the workspaces or virtual projects page. Maybe someone else figured this out? It does seem common enough that I would be surprised if it wasn't supported.