IPython pygments lexers are moving to separate package

[takluyver]

See ipython/ipython#14520. The newly split package is already available now; I plan to leave the IPython.lib.lexers import working for a while, but I thought I'd update this while I'm thinking about it.

[takluyver]

I'll probably extend the Python compatibility of the new package back some way. See also spyder-ide/spyder#23481

[takluyver]

The Python 3.8 tests using conda are still failing. I've used conda-forge's python_min variable in ipython_pygments_kernels, so it's only available in conda-forge for Python >=3.9.

Should I look into if there's a way round that, or is it time for qtconsole to drop Python 3.8? Or to drop testing with conda on 3.8?

[ccordoba12]

Should I look into if there's a way round that, or is it time for qtconsole to drop Python 3.8?

Don't worry about finding a workaround for that, I think it's not worth it. We can leave this to include it when we drop support for Python 3.8, as you said, in a few months.

Or you can give us a hand to leave a single Linux slot on CIs to test QtConsole with pip packages and remove the Windows and Mac ones. Sorry for not addressing that myself, but I'm a bit busy at the moment.

[takluyver]

Thanks! I've removed the conda builds using Python 3.8 as you suggested, leaving the Linux + pip test jobs (pyqt5 & pyqt6) as the only remaining ones on 3.8.