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Re: [Distutils] Working toward Linux wheel support

From: Nate Coraor <n...@bx.psu.edu>
Thu, 13 Aug 2015 10:07:24 -0400
On Wed, Aug 12, 2015 at 9:05 PM, Nathaniel Smith <n...@pobox.com> wrote:

> On Aug 12, 2015 13:57, "Nate Coraor" <n...@bx.psu.edu> wrote:> >> > Hello all,> >> > I've implemented the wheel side of Nick's suggestion from very early in> this thread to support a vendor-providable binary-compatibility.cfg.> >> >   https://bitbucket.org/pypa/wheel/pull-request/54/> >> > If this is acceptable, I'll add support for it to the pip side. What> else should be implemented at this stage to get the PR accepted?>> From my reading of what the Enthought and Continuum folks were saying> about how they are successfully distributing binaries across different> distributions, it sounds like the additional piece that would take this> from a interesting experiment to basically-immediately-usable would be to> teach pip that if no binary-compatibility.cfg is provided, then it should> assume by default that the compatible systems whose wheels should be> installed are: (1) the current system's exact tag,>

This should already be the case - the default tag will no longer be
-linux_x86_64, it'd be linux_x86_64_distro_version.


> (2) the special hard-coded tag "centos5". (That's what everyone actually> uses in practice, right?)>

The idea here is that we should attempt to install centos5 wheels if more
specific wheels for the platform aren't available?

--nate

> To make this *really* slick, it would be cool if, say, David C. could make> a formal list of exactly which system libraries are important to depend on> (xlib, etc.), and we could hard-code two compatibility profiles> "centos5-minimal" (= just glibc and the C++ runtime) and "centos5" (= that> plus the core too-hard-to-ship libraries), and possibly teach pip how to> check whether that hard-coded core set is available.>> Compare with osx, where there are actually a ton of different ABIs but in> practice everyone distributing wheels basically sat down and picked one and> wrote some ad hoc tools to make it work, and it does:> https://github.com/MacPython/wiki/wiki/Spinning-wheels>> -n>

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