2010-01-11 08:50:30 Fabian Groffen napisał(a): > On 11-01-2010 01:25:45 +0100, Arfrever Frehtes Taifersar Arahesis wrote: > > > Can you explain the intended use of this variable, and why normal DEPEND > > > is not sufficient? > > > > PYTHON_DEPEND is intented to simplify specification of dependency on Python. > > > > PYTHON_DEPEND="2:2.5" is shorter than: > > DEPEND="|| ( =dev-lang/python-2.7* =dev-lang/python-2.6* > > =dev-lang/python-2.5* )" > > So if there is enough space to express the dependency with the current > syntax, is it worth introducing a new shorthand for it then?
Some eclasses already support some shorthands for specification of some
dependencies (e.g. need_apache2() in depend.apache.eclass).
As maintainer of some packages depending on Python, I express interest in
possibility of brief specification of dependency on Python. I won't be
enforcing using of this variable for developers, who want to directly
specify dependencies in {,R}DEPEND.
> Also for this example, why does 2:2.5 expand to 2.7, 2.6 and 2.5? I
> would have expected 2.0 ... 2.5.
The first component ('2') specifies the group of accepted versions.
The second component ('2.5') specifies the minimal accepted version inside
this group. ('2:2.5' is identical to '2:2.5:'.)
--
Arfrever Frehtes Taifersar Arahesis
signature.asc
Description: This is a digitally signed message part.
