It looks like we've had a numbering collision https://github.com/pypa/interoperability-peps/pull/30/files is the PEP Tennessee is working on
On Thu, Aug 13, 2015 at 10:56 AM Nathaniel Smith <n...@pobox.com> wrote: > On Aug 12, 2015 16:49, "Robert Collins" <robe...@robertcollins.net> wrote: > > > > I'm not sure what will be needed to get the PR accepted; At PyCon AU > > Tennessee Leuwenberg started drafting a PEP for the expression of > > dependencies on e.g. BLAS - its been given number 497, and is in the > > packaging-peps repo; I'm working on updating it now. > > I wanted to take a look at this PEP, but I can't seem to find it. PEP 497: > https://www.python.org/dev/peps/pep-0497/ > appears to be something else entirely? > > I'm a bit surprised to hear that such a PEP is needed. We (= numpy devs) > have actively been making plans to ship a BLAS wheel on windows, and AFAICT > this is totally doable now -- the blocker is windows toolchain issues, not > pypa-related infrastructure. > > Specifically the idea is to have a wheel that contains the shared library > as a regular old data file, plus a stub python package that knows how to > find this data file and how to make it accessible to the linker. So > numpy/__init__.py would start by calling: > > import pyopenblas1 > # on Linux modifies LD_LIBRARY_PATH, > # on Windows uses ctypes to preload... whatever > pyopenblas1.enable() > > and then get on with things, or the build system might do: > > import pyopenblas1 > pyopenblas1.get_header_directories() > pyopenblas1.get_linker_directories() > > This doesn't help if you want to declare dependencies on external, system > managed libraries and have those be automatically somehow provided or > checked for, but to me that sounds like an impossible boil-the-ocean > project anyway, while the above is trivial and should just work. > > -n > _______________________________________________ > Distutils-SIG maillist - Distutils-SIG@python.org > https://mail.python.org/mailman/listinfo/distutils-sig >
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