[Python-Dev] no consensus on static metadata

Chris Withers chris at simplistix.co.uk
Fri Oct 9 17:32:05 CEST 2009

Tarek Ziadé wrote:
> == The fate of setup.py, and static metadata ==
> So we are going to separate the metadata description from setup.py, in
> a static configuration file, that can be open and read by anyone
> without
> running any code.


> So we've worked on that lately in Distutils-SIG and came up with a
> micro-language, based on a ConfigParser file, that allows
> writing metadata fields that depends on sys.platform etc. I won't
> detail the syntax here but the idea is that the interpretation
> of this file can be done with a vanilla Python without running arbitrary code.

I don't understand how the above two paragraphs are compatible.

> So I am adding this in Distutils for 2.7.

NB: There was no consensus on this "micro-language" on distutils-sig.
While I suspect I don't care as none of my packages rely on anything 
other than other python packages, others did care, and I found the 
syntax Tarek was proposing pretty clumsy.

Does the PEP386 or the changes you're proposing for PEP314 cater for the 
extra_requires stuff in setuptools? I know I use that quite heavily and 
I'm not the only one...

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