Make it possible to import glue-wwt without Qt installed

astrofrog commented 1 month ago

Because glue-wwt can be used in a Jupyter context, we should:

[ ] Make qtpy an optional dependency
[ ] Add a -qt factor in tox or even pyqt and pyside ones like in glue-qt and then have a mix of builds in CI, some with PyQt, some with PySide, and some without either (and maybe with jupyter stuff I guess)
[ ] Make sure the test suite skips tests it can't run if Qt isn't available

Carifio24 commented 1 month ago

We already have qtpy as an optional dependency, and the newest release of pywwt does as well, so the first item should be all set.

Carifio24 commented 1 month ago

@astrofrog While working on this I realized that while we've removed any qtpy dependency from pywwt, we're still pulling in qtpy as it's a dependency of both echo (on which this package depends) and of pvextractor (pulled in from glue-core).

I would think that for echo we should be able to make qtpy an optional dependency, as I imagine it's not needed unless one is using the Qt widget <--> callback linking functions, but I'm pretty unfamiliar with the functionality of pvextractor so I'm not sure how key it is there.

glue-viz / glue-wwt

Make it possible to import glue-wwt without Qt installed #111