Re: [gentoo-dev] Questions on overlays, repositories and PMS

[Brian Dolbec]

On Fri, 23 Feb 2018 18:36:07 +0100
Michael Lienhardt <michael.lienhardt@×××××××.net> wrote:

> I started refactoring my solver to make it more modular, to fix some
> details w.r.t. the PMS and to manage different repositories. I thus
> have several questions on how multiple repositories work in portage.
>
> 1. My understanding was that /etc/portage/repos.conf replaced the
> PORTDIR_OVERLAY variable, however this variable is still documented
> (e.g. in
> https://devmanual.gentoo.org/general-concepts/overlay/index.html).
> Was my intuition right? Or in other word, it is enough to only look
> at /etc/portage/repos.conf? In general, an overlay is a repository,
> i.e., a valid tree layout for the PMS, right (as stated in
> https://devmanual.gentoo.org/general-concepts/overlay/index.html)?
>

Yes, you should not have to look at the old make.conf variables, yes,
they do work, but mostly for backward compatibility with some old third
party tools.  Those really need to be updated.  I forget now how many
there are, but if I remember correctly only 2 or 3 are left.  And yes,
we have been slow to get them updated or replaced.


> 2. the PMS states that any valid repository has a profiles folder
> which can contain profiles and a package.mask file.
>   - can the profiles in a repository different from DEFAULT be
> selected?
>   - is the package.mask file apply only on the packages of that
> repository, or on every packages of every repositories listed
> in /etc/portage/repos.conf?
>
> 3. many repositories do not have an eclass folder, and miss many
> (optional) configuration files in the profiles folder (like
> arch.list, categories):
>   - is such information implicitly inherited from the DEFAULT
> repository (even though
> https://wiki.gentoo.org/wiki//etc/portage/repos.conf states that it
> is not)? the brother overlay
> (https://github.com/stefan-langenmaier/brother-overlay) does not
> specify any masters
>   - when the eclass folder, profiles/arch.list and such are present,
> is the data from the DEFAULT repository still implicitly inherited?
>   - when the eclass folder, profiles/arch.list and such are present,
> are they visible globally (i.e., a package from another repository
> can use a keyword of the arch.list and inherit from one of the
> eclass)?
>
> 4. is the "masters" attribute in /etc/portage/repos.conf make the
> repository inherit other data than the eclasses?
>
> 5. since every repos can have a profiles/categories file, is the
> file /etc/portage/categories obsolete (or should it be)?
>
>
> Best Regards,
> Michael Lienhardt
>
>



-- 
Brian Dolbec <dolsen>