Re: [gentoo-dev] PYTHON_DEPEND - Suggested replacement for NEED_PYTHON

[Sebastian Pipping]

On 01/11/10 09:47, Arfrever Frehtes Taifersar Arahesis wrote:
> 2010-01-11 04:55:02 Sebastian Pipping napisał(a):
>>>>>   PYTHON_DEPEND="2:2.5:2.6"
>>>>>     Dependency on Python 2.6 or 2.5.
>>
>> The colon (':') has two different semantics here.
>
> The colon is only separator of components, so it has the same semantic.
> Each component has strictly defined meaning.

The first ':' is a slot colon while the second one is a from-to colon. I
fail to see how that is the same semantic.

Also, in normal dependency notation the slot is suffix-like (e.g.
package:2) whereas in this syntax it's prefix-like - the opposite.
Wouldn't it be more intuitive to make suffix-like use of it?

Looking from another angle there is range syntax being used for
kernel-check already.  It looks like this:

  [linux >=2.6.16 <2.6.31]

(examples on <http://dev.gentoo.org/~asym/guide.xml>)

Maybe you could adjust that to your needs.  I'm not sure where that
syntax is defined but afair rbu should be a good contact on that subject
(Robert?).



Sebastian