[Distutils] RFC PEP 386 : Version comparisons

[Floris Bruynooghe]

On Fri, Jul 03, 2009 at 02:20:51PM +0200, Tarek Ziadé wrote:
> 
> back to that discussion, after re-reading all the threads I have a proposal :
> 
> 1- let's add as we said "install_requires" in PEP 345 and describe in
> it that people can define requirements,
>   but without giving them rules for the version schemes.
> 
>   We will just write in that PEP that it's up to the *dependency
> manager* (pip, setuptools, zc.buildout, etc)
>   to provide a cmp() for the version.
> 
>   The only rule will be that each dependency is described like this :
> 
>      dist_name [<|>|==|!=|>=|<=] version
> 
>   where version is free and dist_name in [a-zA-Z0-9]

But does this not mean that you can end up with different results then
intended?  E.g. the developer uses pip but the user installs with
easy_install and because version comparison is not standardised the
user could end up with a version not intended by the developer.

Or did I miss an essential part of the discussion?

It was my impression that one, or even a few, incarnations of the
verlib.py where pretty close to something that most people could live
with.


Regards
Floris


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