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Date: Mon, 8 Feb 2021 12:14:01 +0100
From: "Quentin Schulz" <quentin.schulz@streamunlimited.com>
To: Mauro Ziliani <mauro@faresoftware.it>
Cc: Yocto-mailing-list <yocto@lists.yoctoproject.org>
Subject: Re: [yocto] PREFERRED_VERSION_pn-: which version is selected?
Message-ID: <20210208111401.lbmcikrsawzkrajr@qschulz>
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Hi Mauro,

On Mon, Feb 08, 2021 at 11:52:33AM +0100, Mauro Ziliani wrote:
> Hi all.
>=20
> I'm working with Krogoth on imx6
>=20
>=20
> I have the same recipe with different versions
>=20
> recipe1_0.9.bb
>=20
> recipe1_1.0.bb
>=20
>=20
> In the image recipe I put
>=20
>=20
> image-recipe.bb
>=20
> IMAGE_INSTALL_append :=3D " \
>=20
> =A0=A0=A0 recipe1 \
>=20
> "
>=20
> PREFERRED_VERSION_pn-recipe1 :=3D "0.9"
>=20

Yocto chant #1: Recipe data is local, conf data is global.

In other words, you cannot modify other recipes from one recipe.

Since image recipes are recipes, your PREFERRED_VERSION ni your image
recipe is effectively a no-op.

On a side note, :=3D operator is rarely seen outside of
FILESEXTRAPATHS_prepend in bbappend, try to keep it this way.

>=20
> If I do
>=20
> =A0bitbake -s
>=20
> I get
>=20
> recipe1=A0=A0=A0 :1.0-r0
>=20
>=20
> If I do
>=20
> bitbake image-recipe
>=20
>=20
> in image-recipe.manifest I look
>=20
> recipe1=A0 1.0-r0
>=20
>=20
> Why is not selected the preferred version?
>=20
> How can I choose the recipe's version I'd like?
>=20

In a configuration file: local.conf, distro.conf, machine.conf.

Though, it is heavily discouraged to use local.conf for anything except
debugging sessions, as it is meant only for **local** configuration and
isn't supposed to be versioned.

Cheers,
Quentin