Re: [gentoo-portage-dev] custom profiles?

[Zac Medico <zmedico@gentoo.org>]

On 03/14/2015 11:41 AM, Joakim Tjernlund wrote:
> On Sat, 2015-03-14 at 11:08 -0700, Zac Medico wrote:
>> On 03/14/2015 09:12 AM, Joakim Tjernlund wrote:
>>> On Wed, 2015-03-11 at 13:43 -0700, Zac Medico wrote:
>>>> On 03/11/2015 01:16 PM, Joakim Tjernlund wrote:
>>>>> On Wed, 2015-03-11 at 10:56 -0700, Zac Medico wrote:
>>>>>> On 03/11/2015 08:48 AM, Joakim Tjernlund wrote:
>>>>>>> On Sun, 2015-03-08 at 11:58 -0700, Zac Medico wrote:
>>>>>>>> On 03/08/2015 10:01 AM, Joakim Tjernlund wrote:
>>>>>>>>> On Sun, 2015-03-08 at 15:47 +0000, Joakim Tjernlund wrote:
>>>>>>>>>>
>>>>>>>>>> package.use/package.use.force is a bit different though:
>>>>>>>>>> cat /etc/portage/package.use/qemu
>>>>>>>>>> app-emulation/qemu vde -alsa -pulseaudio -bluetooth -opengl qemu_user_targets_x86_64 xattr 
>>>>>>>>>> virtfs 
>>>>>>>>>> static-
>>>>>>>>>> user
>>>>>>>>>>
>>>>>>>>>> #Needed by static-user
>>>>>>>>>> sys-libs/zlib static-libs
>>>>>>>>>> dev-libs/glib static-libs
>>>>>>>>>> sys-apps/attr static-libs
>>>>>>>>>>
>>>>>>>>>> Moving this to package.use/package.use.force does not respect -alsa, -pulseaudio, -opengl 
>>>>>>>>>> all
>>>>>>>>>> flags which has a - on them, emerge wants to turn them on again.
>>>>>>>>>>
>>>>>>>>>> Am I missing something?
>>>>>>>>>> Using portage 2.2.18
>>>>>>>>>
>>>>>>>>> Appears one have to use package.use.mask for that.
>>>>>>>>>  cat package.use.mask
>>>>>>>>>  app-emulation/qemu alsa pulseaudio bluetooth opengl
>>>>>>>>> It would be handy if one could use the same syntax as in /etc/portage/package.use/qemu(-alsa -
>>>>>>>>> opengl 
>>>>>>>>> etc.)
>>>>>>>>>
>>>>>>>>>  Jocke
>>>>>>>>>
>>>>>>>>
>>>>>>>> Yes, the inverted use.mask logic can be confusing if you are not familiar with it. The negative 
>>>>>>>> flags 
>>>>>>>> have a
>>>>>>>> special meaning within the context of of portage's "incremental stacking" behavior, so they can 
>>>>>>>> still 
>>>>>>>> be 
>>>>>>>> useful, though not in the same way that you you attempted to use them.
>>>
>>> Just noticed that USE flags in profiles/package.use.mask override everything so this
>>>   USE=thin emerge -av sys-fs/lvm2
>>> will not turn on thin if thin is in profiles/package.use.mask
>>> How can just change the default so a user can easily turn it on ?
>>
>> Generally, setting the USE environment variable like that is poor practice, because the setting will not 
>> persist the next time that you rebuild the package. So, you should set the flag in 
> 
> 
> I know, this was just an example to illustrate that it did not work.
> 
>> /etc/portage/package.use. You can unmask the flag for lvm2 like this:
>>
>>   echo "sys-fs/lvm2 -thin" >> /etc/portage/profile/package.use.mask
> 
> You misunderstand, I have "sys-fs/lvm2 thin" in /etc/portage/profile/package.use.mask
> and I want a user to able to override this setting, using USE=".." or adding it
> to their local /etc/portage/package.use file/dir

There's no other way to negate a use mask than to use
/etc/portage/profile/{use.mask,package.use.mask} as I have described. I
don't think that it makes much sense to negate a use mask for a single
emerge invocation. If you want to do that, then why is the use flag
masked anyway?
-- 
Thanks,
Zac