bug#41738: Jupyter propagates two different versions of ipython

[david larsson <david.larsson@selfhosted.xyz>]

On 2020-06-06 17:52, paul wrote:
> Hi Guix,
> 
> On Guix System
> 
>   guix ecab53c
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: ecab53c320b1584a08f811b17a92bd9a50a50ff3
> 
> it's impossible to install jupyter in a new profile because it tries
> to propagate two different versions of python-ipython, you should be
> able to reproduce with:
> 
> $ guix package -p /tmp/tmp-profile -i jupyter
> The following package will be installed:
>    jupyter 1.0.0
> 
> guix package: error: profile contains conflicting entries for
> python-ipython
> guix package: error:   first entry: python-ipython@7.9.0
> /gnu/store/z0yarar134q6sziqncjdlfg2h2w5b2yh-python-ipython-7.9.0
> guix package: error:    ... propagated from python-ipywidgets@7.5.1
> guix package: error:    ... propagated from jupyter@1.0.0
> guix package: error:   second entry: python-ipython@7.9.0
> /gnu/store/avmg5jd7kccchxadsd9c7zq0p3shlk3w-python-ipython-7.9.0
> guix package: error:    ... propagated from python-qtconsole@4.4.3
> guix package: error:    ... propagated from jupyter@1.0.0
> hint: You cannot have two different versions or variants of `jupyter'
> in the same profile.
> 
> The conflict seems to be caused because:
> 
> - /gnu/store/avmg5jd7kccchxadsd9c7zq0p3shlk3w-python-ipython-7.9.0
> depends on python-prompt-toolkit@3.0.5
> 
> - /gnu/store/z0yarar134q6sziqncjdlfg2h2w5b2yh-python-ipython-7.9.0
> depends on python-prompt-toolkit@2.0.7
> 
> This change seems to be introduced with
> 32ba87c14fd5e5b54d95211cd9a159d568ce7c67 , which updates
> python-prompt-toolkit to 3.0.5 and to prevent python-ipywidgets,
> python-jupyter-console and python-widgetsnbextension tests from
> crashing builds them with python-prompt-toolkit@2.0.7.
> 
> Giacomo

Hi,
I can confirm this, been having the same issue. I worked around it 
temporarily by changing some python-packages and adding some to a 
temporary channel and guix pulling to the commit just prior to the 
32ba87c14 that you mention. In case anyone is helped by it; the channel 
is here: https://github.com/methuselah-0/my-guix-packages

Best regards,
David