Re: [PATCH v7 31/31] gitlab: add python linters to CI

[Cleber Rosa]

On Thu, May 27, 2021 at 12:17:36PM -0400, Cleber Rosa wrote:
> On Wed, May 26, 2021 at 03:56:31PM -0400, John Snow wrote:
> > On 5/26/21 2:47 PM, Vladimir Sementsov-Ogievskiy wrote:
> > > > build requisite for PyPI packages in the event that PyPI only has a
> > > > sdist and not a bdist for a given dependency during installation.
> > > 
> > > i.e. some packages are compiled during installation?
> > 
> > Realized I didn't answer this directly. Yes, sometimes, depending on your
> > platform or your python version or how new the python package is, it may not
> > have a binary distribution available and will require compilation.
> >
> 
> But shouldn't this be known at this time, given that you're putting
> the depedencies for one specific platform?  I'd very very much like
> to know which packages, for this specific platform, is triggering
> a Python package build that has C-based extensions.
> 
> And it would be even weired if such a package does *not* have C-based
> extensions, and it's still requiring gcc.  I would judge it as a
> major setuptools design issue.
> 
> > This comes up for Python 3.10 dependencies right now in particular. They do
> > not have binary distributions because (I assume) 3.10 isn't finalized yet,
> > so they haven't done a re-build. Or something like that.
> > 
> > --js
> 
> OK... but can you share which package available only in source is
> requiring gcc?  I'm not going to get a good night of sleep without
> knowing that! :)
> 
> Thanks,
> - Cleber.

OK, so typed-ast is the culprit, and we can attest its requirement
for a compiler here:

  
https://github.com/python/typed_ast/blob/8eed936014f81a55a3e17310629c40c0203327c3/setup.py#L123

Now I can sleep in peace. :)

- Cleber.

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