[Python-ideas] compatibility triples for binary distributions

[Miki Tebeka]

IMO  implementation names should be compatible with PEP-421<http://www.python.org/dev/peps/pep-0421/>. 


Also instead of a cryptic long string, maybe some structured one?. For 
example (JSON): {"implementation":"cpython","machine":"x86_64"}
It's longer but more readable IMO (and easier to parse).


On Wednesday, July 25, 2012 7:55:34 AM UTC-7, Daniel Holth wrote:
>
> I am working on a specification that might be useful in the PKG-INFO
> Platform or Supported-Platform tags. It tries to express which Python
> versions a built distribution works on with a triple
> (Implementation+Language Version, ABI, Architecture), anticipating an
> ABI that is not tied to a single CPython release.
>
> A typical tag would be py27-noabi-noarch or cp33-cp33dmu-linux_x86_64.
>
> cp27-noabi-noarch is a package that requires CPython 2.7 but doesn't
> include extension modules.
>
> The Python implementation is abbreviated. Each implementation has a
> two-letter code:
>
>     py: Generic Python
>     cp: CPython
>     ip: IronPython
>     pp: PyPy
>     jy: Jython
>
> concatenated with py_version_nodot “27”. The minor version can be
> omitted “py2” or “py3” when appropriate.
>
> The ABI tag is an abbreviated SOABI “cp33m”, or, for “pure Python”
> packages, “noabi”. For pypy it was more or less suggested that the ABI
> would have to be a hash of the source code revision and the
> translation/compilation options.
>
> The platform tag is distutils.util.get_platform() with all periods and
> hyphens replaced with underscore, or the string ‘noarch’.
>
> I use the term "built distribution" instead of "binary distribution"
> because it includes pure python packages that for example have had
> 2to3 run ahead of time and are installable without setup.py.
>
> Will it work? The ABI in particular may be so messy that it should be 
> lumped with architecture. What is the ABI for packages that use ctypes or 
> cffi?
>
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