Date: Mon, 3 Feb 2020 14:28:21 -0800
From: Clayton Craft <clayton@craftyguy.net>
To: ~alpine/apk-tools@lists.alpinelinux.org
Subject: supporting multiple versions of same package in single repo
Message-ID: <20200203222821.wty53efr5u2sx3gk@computer.craftyguy.net>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
	protocol="application/pgp-signature"; boundary="3lapl27v565nq5rf"
Content-Disposition: inline


--3lapl27v565nq5rf
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline

In postmarketOS we are attempting to have 2 versions of mesa: 'mesa' (from
upstream Alpine), and 'mesa-git' (tracks upstream mesa master branch).  The goal
is to have both packages + their respective subpackages provide system mesa for
an install. Only one (mesa or mesa-git) is expected to be installed on a single
system at one time. When a user installs 'mesa-git', and then (for example)
installs a package which depends on 'mesa-dev', the idea is that 'mesa-git-dev'
would be installed instead of 'mesa-dev'. We want 2 versions of mesa since some
devices pmos supports require a newer mesa than what is currently in the latest
mesa stable branch.

We are having a very hard time coming up with a mesa-git APKBUILD that can do
this. In IRC, it was mentioned that we could use a virtual package, and rename
'mesa' to something else, and handle installing either of the 2 packages in the
virtual package. This would probably work (?) but is less than ideal since we'd
have to keep the renamed mesa package in sync with upstream Alpine's mesa
package.

Arch Linux seems to be able to handle this scenario without issue, AUR has a
mesa-git package which results in mesa-git-* subpackages being installed at the
right time (when something depends on mesa-dev, etc).
Is apk/APKBUILD capable of supporting this, or does anyone have any
advice/suggestions on how this goal could be achieved?

-Clayton

--3lapl27v565nq5rf
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=VA+K
-----END PGP SIGNATURE-----

--3lapl27v565nq5rf--