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[TIP] masking a package from an overlay (only)
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khayyam
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PostPosted: Thu Jun 07, 2012 10:52 pm    Post subject: [TIP] masking a package from an overlay (only) Reply with quote

This is a recent discovery of mine, and came about due to pentoo's overlay having packages that essencially compete for inclusion when using '--newuse'.

A number of their packages have a 'pentoo' useflag (openrc, and acpid to give two examples), but are the same revisions as those provided by gentoo, so, if using '--newuse' these then want to be inlcuded in the list of packages to be re-merged. As I don't emerge anything from their overlay, but simply want it around for comparisons sake, with the one or two packages from their tree I've merged being replicated into a local PACKAGE_OVERLAY, I was getting a bit tired of it, and was about ready have layman --delete the whole thing.

I've been using gentoo for years, but wasn't really getting my head around how to go about prioritising one package over another, something I've done, only on a grand scale with 'package' as a target, using package.mask. I was sure there was probably some simple method of doing this but after perusing the manpages, and various searches, I was none the wiser, but thought, OK, its just a mask, and so I can probably provide the overlay ... bingo, as the old folks say.

/etc/portage/package.mask or /etc/portage/package.mask/<package>

Code:
sys-apps/openrc::pentoo

This masks the overlay version only ... ta da!

I'm sure that this is old news to some, but I wasn't aware of it, hopefully its of some use to someone.

best ... khayyam
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olek
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PostPosted: Fri Jun 08, 2012 12:03 pm    Post subject: Reply with quote

You can even mask a whole overlay and unmask only some it's packages you really want.
http://oleeekchoff.blogspot.de/2012/06/use-overlay-for-specific-packages-only.html
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khayyam
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PostPosted: Sat Jun 09, 2012 2:36 am    Post subject: Reply with quote

olek ...

could you provide an example, the link doesn't work for me in either in ff (w/ noscript), or elinks.

thanks in advance ... khay
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olek
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PostPosted: Sat Jun 09, 2012 6:23 pm    Post subject: Reply with quote

Layman and portage are still missing features like giving package sources like overlays and the portage tree priorities, so that packages out of the portage tree are chosen above versions in unofficial overlays, which one only added for one specific package for example.
But there is a way to work around that feature lack. Actually, portage prioritizes some config files over others, so:
First

Make sources be chosen above others.


Mask all packages of the source, which shall has lower priority. Create a file in /etc/portage/package.mask/ , let's name it "lowprio". Write:
Quote:
*/*::<NAME_OF_SOME_OVERLAY>
*/*::<NAME_OF_SOME_OTHER_OVERLAY>
[...]
*/*::sabayon

i.e.
Now, all packages in that overlay are masked. They are all blocked and one will not be able to emerge them, they wouldn't show up in portage as long one calls for them, but still they are blocked. So all the version of a package in the overlays/sources one didn't put into that file, will be chosen above the versions in the overlays/sources still available.


Second

Make the wanted packages available again.



One didn't add overlays for no reason, there are still packages, one wants to emerge. We unmask those special packages, after all packages of it's overlay were masked.
Create a file in /etc/portage/package.unmask/ , let's call this one "wanted". Write:
Quote:
<SOME_CATEGORY>/<SOME_PACKAGE>::<SOME_OVERLAY>
[...]
x11-misc/gpaste::sabayon
media-sound/tuxguitar::sabayon

i.e.
Those packages are now available in the versions those overlays provide again. And this packages only.
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Etal
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PostPosted: Sat Jun 09, 2012 8:13 pm    Post subject: Reply with quote

olek, you've got some nice Gentoo material on your blog! You should consider getting it added to Planet Larry.
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khayyam
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PostPosted: Sun Jun 10, 2012 2:09 pm    Post subject: Reply with quote

olek ...

thanks for the clarification, right after posting I figured it'd be '*/*::overlay' as it follows the same logic, but thought it better to leave you to reply incase you has some other method in mind.

olek wrote:
[...] They are all blocked and one will not be able to emerge them, they wouldn't show up in portage as long one calls for them, but still they are blocked.


I assume that "wouldn't" is a typo, and it should read: "[...] they will show up in portage if one calls for them, but they will be blocked."

thanks again & best

khay
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olek
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PostPosted: Mon Jun 11, 2012 12:52 pm    Post subject: Reply with quote

You're right, thanks ;)
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