ENH: Add a way to install Spyder with pyqt6 or pyside6

[larsoner]

It would be nice if I could install spyder and pyside6 but not pyqt. One way to allow this would be to change the current spyder recipe into a spyder-base, remove pyqt as a requirement, and make a new spyder recipe that depends on spyder-base and pyqt. This is backward compatible with what people probably expect conda install spyder to do, but would allow others to do conda install spyder-base pyside6 and have a working Spyder (I think!).

If there's interest I'm happy to give it a shot, but #177 should probably land first.

[larsoner]

Oh -- I just realized that PyQt is hard-coded setup.py in Spyder so this is really more of an upstream question I suppose. Closing!

[ccordoba12]

I think the best we could do to support both Qt 5 and 6 is to provide a spyder-base package that is not tied to any Qt binding. Then you should be able to run

conda install -c conda-forge spyder-base pyside=6

(although Spyder 6 is not ready for PySide6 yet).

[ccordoba12]

@mrclary, could you take a look at this one? You can use the recipes in the QtConsole or PyLSP feedstocks as examples.