[Jakub Wilk, 2010-06-24]
> * Piotr Ożarowski <pi...@debian.org>, 2010-06-24, 09:27:
>> it gets a little bit messy when minimum required Python version is
>> greater than the default one, but it should work, yes (IIRC last year
>> someone gave me example where it wouldn't work, but I don't remember it
>> now, hopefully it will be pointed out again soon)
>
> XSPV is currently used for two things:
> 1. cdbs/dh7 etc. use it to iterate over Python versions to build, install
> etc. stuff.
... which use py{,3}versions command¹ to get the list of supported
Python versions
[¹] just like all other packages that do not use cdbs/dh7 should do
[...]
> Here are some real world examples (for 2.X, but that's irrelevant):
>
> * A module that works perfectly with every Python >= 2.5, but its
> documentation generation system required Python 2.6. Build-dep on python
> (>= 2.6) is needed, which doesn't mean that modules shouldn't be
> byte-compiled for 2.5.
python (>= 2.6-1~) | python (>= 2.5)
(note that buildds ignore everything after "|")
> * A module with no upstream build-system, which works only with Python
> 2.5. Build-dep on python normally isn't needed at all, yet one should be
> able to specify which Python version are supported by this module.
well, right now python is pulled in anyway (via python-central or
python-support build dependency). If a package doesn't use helper
tools, it doesn't use XS-Python-Version as well.
>> example for default=3.1 minimum=3.2 maximum=3.5:
>> python-all | python-all (>= 3.2), python-all (<< 3.5), python-all (>=
>> 3.1.2-2)
>> or even
>> python-all (>= 3.1.2-2) | python-all (>= 3.2), python-all (<< 3.5)
>
> This is neither human readable nor human writable.
most packages will have "python3-all (>= 3.1.2-2)" only
>> I will implement it in dh_python3 (only ">= X.Y" and "<< X.Y" will be
>> taken into account, I will ignore all ".* X\.Y.*" including X.Y-Z)) and
>> use it if -V, debian/pyversions, X-Python-Version and XS-Python-Version
>> is not available (in that order)
>
> If you implement this, I will refrain from doing any QA work on python3-*
> packages. Have fun.
ok, postponing
--
Piotr Ożarowski Debian GNU/Linux Developer
www.ozarowski.pl www.griffith.cc www.debian.org
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