Problem description

TL;DR: It would be useful to be able to add dependencies to a currently installed environment, without recording it in the project's permanent dependencies or in the lock file.

Rationale:

• It's a common workflow to create dev workspaces where multiple components are installed from local checkouts in editable mode.
• Those component's local checkouts should of course not be committed in either pixi/pyproject.toml or the lock file.
• Pixi does currently not appear to offer any way to do the above.

This can be fudged somewhat by messing with PYTHONPATH, which works in simple cases, but gets tricky when for instance components have a build step.