Re: [gentoo-dev] Undocumented and unused USE variables

[Alec Warner <antarus@gentoo.org>]

On Fri, Mar 16, 2012 at 5:49 AM, Christoph Niethammer
<christoph.niethammer@googlemail.com> wrote:
> Hello.
>
> I see. There is more documentation on a per package bases wich has to be considered, too. (Found already the metadata.xml files.)

The metadata.xml files are  used to generate the use.local.desc file.

>
> As with the pango USE they may differe in their description - maybe also in their meaning for different packages. So local USE flags should only be used on a per package basis!

Usage of flags are not so clear cut as this, so I wouldn't make that
kind of generalization on their use.

>
> Here the euse command is realy handy. :-)
> However the sysfs USE flag is still hiding its documentation.
> So lets see if this is a bug or a feature. ;-)
>
> Thx for the clarification so far.
>
> Best regards
> Christoph
>
> René Neumann <lists@necoro.eu> schrieb:
>
>>> * Undocumented use flags:
>>> ----------
>>> pango
>>
>>
>>% euse -i pango
>>global use flags (searching: pango)
>>************************************************************
>>no matching entries found
>>
>>local use flags (searching: pango)
>>************************************************************
>>[+  D   ] pango
>>    app-i18n/fcitx: Enable support for x11-libs/pango
>>              3.6.3 [gentoo]
>>              3.6.4 [gentoo]
>>        [+  ] 4.0.0 [gentoo]
>>        [+  ] 4.0.1 [gentoo]
>>        [+  ] 4.2.0-r2 [gentoo]
>>        [+  ] 4.2.1 [gentoo]
>>
>>[+  D   ] pango
>>    media-gfx/fontforge: Enable pango font rendering
>>        [+  ] 20100501 [gentoo]
>>        [+  ] 20110222 [gentoo]
>>        [+  ] 20110222-r1 [gentoo]
>>
>>[+  D   ] pango
>>    media-gfx/imagemagick: Enable Pango support using x11-libs/pango
>>
>>[...]
>>