[gentoo-alt] Re: RFC: changing sys-apps/portage python API to use $EROOT instead of $ROOT for keys to portage.db and similar map objects

[Zac Medico]

On 10/25/2011 02:06 AM, Zac Medico wrote:
> On 10/01/2011 10:34 AM, Zac Medico wrote:
>> Hi,
>>
>> As I integrate prefix support into mainline portage, I think it will
>> make more sense to use $EROOT instead of $ROOT for keys to portage.db
>> and similar map objects. This will also affect the portageq commands
>> which take a <root> parameter. The reason that I think $EROOT makes more
>> sense for these keys is that it will allow for multiple prefixes to
>> exist simultaneously in maps like portage.db.
>>
>> This won't affect non-prefix users, since $EROOT == $ROOT when $EPREFIX
>> is empty. So, I'm asking here because if might affect prefix users who
>> use portageq, or any programs installed in a prefix that use the
>> sys-apps/portage python API. If necessary, I suppose that python
>> programs could have some compatibility code which checks whether or no
>> $EROOT is contained in portage.db, and fall back to "/" otherwise.
>
> Here's the commit to watch out for if/when it gets merged into the
> prefix branch:
>
> http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=a715b65f7bd36409c1283e6911265d1f4405ab7a

This change has hit in prefix portage-2.2.01.19833. The only problem
that I've noticed so far is that `eselect news` doesn't find news items.
I've attached a patch for eselect in order to fix this. The following
commit will also have to be applied to prefix portage-2.2.01.19833 in
order to make this work correctly:

http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=174ffd8336ec9914f85f871b7ce78506574d3d9b
-- 
Thanks,
Zac