xlsx2csv package may not be required.

[Adam Dinwoodie]

On Thu, Mar 16, 2023 at 07:58:48PM -0600, Doug Henderson via Cygwin-apps wrote:
> There is a current pure python version of xlsx2csv which runs for many
> versions of Python 2 and Python 3.
> 
> It may not be necessary to provide a package for it in cygwin.
> Instead, users may install the pure python package from PYPI
> https://pypi.org/ using pip or another python package manager.

Installing using pip or similar is an option for the vast majority of
packages that are available through the Cygwin installer; by that logic
it wouldn't make sense to provide most of the Python packages we
provide.  Which wouldn't be an invalid strategy, but it would be a very
big change in how we handle things!

I think the advantage of using the Cygwin packages is a better
likelihood of packages actually being compatible with Cygwin, rather
than having some weird and unpredictable package dependency issue.  A
pure Python xlsx2csv is very unlikely to be affected by that sort of
issue, but providing it as a Cygwin package means users shouldn't need
to even think about whether the package is a pure Python package or not.