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From: Mats Wichmann <mats@wichmann.us>
Newsgroups: comp.lang.python
Subject: Re: Installation of Slixfeed with pip fails
Date: Mon, 12 Aug 2024 10:59:54 -0600
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On 8/11/24 07:42, Schimon Jehudah via Python-list wrote:
> Barry. Thomas. I agree.
> 
> I do not have his machine to make observations, and therefore this
> report is obscured.
> 
> I want to solve an issue of a friend who has attempted to install
> Slixfeed, which is based on OMEMO, and the installation has failed.
> 
> I have asked him to install python-omemo and he has reported this:
> 
> $ pip install omemo
> 
> [...]
> 
> ERROR Failed building wheel for XEdDSA
> ERROR Could not build wheels for XEdDSA, which is required to install pyproject.toml-based projects
> 
> Please see the attached screenshot.
> 
> Kind regards,
> Schimon

No screenshot arrived here, but this is a pretty typical failure, 
especially on Windows systems:  pip didn't find a suitable binary wheel 
package for the Python version / platform combination, and so tried to 
build one from sources.  That often requires additional setup before it 
can work.

The question would be why - I looked here:

https://pypi.org/project/XEdDSA/#files

and there are binary wheels for Windows, Linux, Mac for CPython 3.7 
through 3.12, and also wheels for PyPy from 3.7 through 3.10, so unless 
your friend's machine doesn't fit that range, you'd expect that 
particular package to install okay.