Re: [gentoo-dev] "Lazy" use flags?

[Róbert Čerňanský]

On Thu, 11 Feb 2016 07:55:52 -0500
Rich Freeman <rich0@g.o> wrote:

> On Wed, Feb 10, 2016 at 11:57 PM, Kent Fredric
> <kentfredric@×××××.com> wrote:
> > On 11 February 2016 at 15:51, Rich Freeman <rich0@g.o> wrote:
> >> In this case you just wouldn't enable python 2.7 support, but you
> >> wouldn't disable it either.  Portage would just pull it in where
> >> it is needed.
[...] 
> Perhaps it might make sense to introduce a new ~foo setting which
> undoes a +/-foo in make.conf but doesn't set it either + or - in
> package.use, allowing the setting to revert to the default behavior.
> That would actually be useful independent of lazy use flags, but would
> be more useful with lazy use flags.

Having also ~foo syntax (together with omiting use flags) seems to me
as best option now actually.  It would support also Kent's use case I
think.

Taking that use case as an example - if I would want to get rid of
python-2.7 as soon as possible I'd set -python_targets_python2_7 in
make.conf.  For those packages which portage screams that needs
python_targets_python2_7 I'd set ~python_targets_python2_7 in
package.use.

In time when last of those packages stops hard-requiring
python_targets_python2_7 the python-2.7 package itself would be
depcleaned and I could remove '~' entries from package.use.

Nice and clean :-) .


-- 
Róbert Èeròanský
E-mail: openhs@×××××××××.com
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