This is my fault,
python-ipython accepts both python-prompt-toolkit-2 and the latest
version, python-prompt-toolkit (3), but some packages that depend on
ipython accept only python-prompt-toolkit-2.
I messed up with jupyter, I didn't realize that another input depended
on ipython also.
I'll try
--8<---cut here---start->8---
building /gnu/store/rb5cigrwvqgm87hxpf553g283lc2j6px-jupyter-1.0.0.drv...
guix package: error: profile contains conflicting entries for python-ipython
guix package: error: first entry: python-ipython@7.9.0
/gnu/store/z0yarar134q6s
