[systemd-devel] Support for unmerged-usr systems will be REMOVED in the second half of 2023

[Dimitri John Ledkov]

Nobody is retroactively changing existing systemd releases.

Stay on a previously released systemd version which will continue to have
features it used to have.


On Tue, 13 Jun 2023, 15:53 Richard Purdie, <
richard.purdie at linuxfoundation.org> wrote:

> On Tue, 2023-06-13 at 15:31 +0100, Luca Boccassi wrote:
> > On Tue, 13 Jun 2023 at 15:15, Richard Purdie
> > <richard.purdie at linuxfoundation.org> wrote:
> > >
> > > On Tue, 2023-06-13 at 11:29 +0100, Luca Boccassi wrote:
> > > > On Tue, 20 Sept 2022 at 20:18, Luca Boccassi <bluca at debian.org>
> wrote:
> > > > >
> > > > > Hello,
> > > > >
> > > > > Following this thread started back in April:
> > > > >
> > > > >
> https://lists.freedesktop.org/archives/systemd-devel/2022-April/047673.html
> > > > >
> > > > > As far as we understand there are no distributions running or
> > > > > optionally supporting systemd that have not either completed, or at
> > > > > least started, the transition to merged-usr systems.
> > > > >
> > > > > So, we are planning to drop support for unmerged-usr systems in the
> > > > > first release that will happen in the second half of next year,
> I.E.:
> > > > > any time starting from July 2023 (while we tend to release somewhat
> > > > > regularly we do not have strict dates and deadlines, so right now
> it's
> > > > > not possible to tell the exact version, but it will be of course
> > > > > communicated once it becomes clear).
> > > >
> > > > As previously announced, this is being prepared now and will be part
> of v254:
> > > >
> > > > https://github.com/systemd/systemd/pull/27999
> > >
> > > I'd note that nobody did resolve the issues for Yocto Project yet so
> > > our CI will break if we try and upgrade :(.
> >
> > Those issues are purely internal to Yocto's custom CI and completely
> > unrelated to systemd, as they manifest without systemd being even
> > enabled. The 'usrmerge' distro feature was added six years ago, in
> > 2017, by Yocto developers:
> >
> >
> https://git.yoctoproject.org/poky/commit/?id=178e983cf745fe32b199e0cbfe9777270124b186
> >
> > If even Yocto developers cannot manage to fix internal CI issues
> > created by internal features added by Yocto developers in 6 years,
> > there's hardly anything outsiders could possibly do, I'm afraid.
>
> The issue is that Yocto Project supports a variety of configurations
> and systemd has decided to drop support for some of them.
>
> Nobody has done the work to migrate the configuration combinations
> being dropped in Yocto Project.
>
> Distro features are optional in Yocto Project, we don't force people to
> use them. There are plenty of people with products shipping in the wild
> which do not use the "usrmerge" feature. Our own test matrix hasn't
> been adjusted to force usrmerge for systemd, nor is the documentation
> or migration information present for that change.
>
> This is not an issue caused by our "internal features" and to claim
> that is farcical.
>
> Richard
>
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