pyqt as optional dependency

[ericpre]

qt is a one of the largest dependencies (100 Mo) and can't be used remotely (cloud or cluster). Making this dependency optional would allow to use smaller docker image, etc.

[TomSlater]

This would make sense. I might make it so that the default is to include pyqt, but have the option to not include it for docker images etc.

[ericpre]

This would make sense. I might make it so that the default is to include pyqt, but have the option to not include it for docker images etc.

Is it possible with pip?

[TomSlater]

This would make sense. I might make it so that the default is to include pyqt, but have the option to not include it for docker images etc.

Is it possible with pip?

I'm not sure it is, based on this thread. I could just strip out pyqt as a dependency and include its installation in the standard installation instructions.

[TomSlater]

Maybe it would make most sense to just have pyqt as an optional dependency but use this in the standard instructions.

[ericpre]

Yes, this is usually how it is done.

On a similar topic, it may be worth considering using qtpy, to allow using pyside.