bug#53883: strange conflicts with guix package -m manifest

[Marius Bakke]

Ludovic Courtès <ludo@gnu.org> skriver:

> Hi,
>
> Leo Famulari <leo@famulari.name> skribis:
>
>> Basically, the python-twine package, as it is now, cannot be installed
>> in a profile.
>>
>> That is because its dependency graph of propagated packages includes
>> different versions of python-cffi, and you cannot install both of these
>> cffi packages alongside each other in a symlink forest (i.e. a profile).
>
> Any idea how this could be addressed?
>
> There are currently 133 dependents of python-cffi@1.15 (python-cmarkgfm
> is the only direct user) and 3,807 dependents of python-cffi@1.14.  It’d
> be easier if they all depended on 1.14.
>
> Unfortunately we can’t just use 1.14 for python-cmarkgfm:
>
> --8<---------------cut here---------------start------------->8---
> $ guix build python-cmarkgfm --with-input=python-cffi@1.15=python-cffi@1.14
> […]
> ERROR: Could not find a version that satisfies the requirement cffi>=1.15.0 
> (from versions: none)
> ERROR: No matching distribution found for cffi>=1.15.0
> --8<---------------cut here---------------end--------------->8---
>
> Should we downgrade python-cmarkgfm, or relax its requirements?  Marius,
> WDYT?  :-)

I dug around in the upstream commit history and it appears that the
requirement was only added for Python 3.10 compatibility.  So I relaxed
its requirements in commit f37eb24df5ecb3a14bd42507076854cc979ddecf.

-- 
Thanks,
Marius

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