[systemd-devel] Dropping split-usr/unmerged-usr support

[Luca Boccassi]

On Thu, 2022-04-07 at 10:59 +0200, Lennart Poettering wrote:
> On Mi, 06.04.22 11:24, Mike Gilbert (floppym at gentoo.org) wrote:
> 
> > We are not likely to require merging of / and /usr for the foreseeable
> > future. We are a "rolling release" distro and basically never require
> > our users to re-install, which makes large file system migrations
> > difficult. Also, many of our users would resist any attempt to force
> > merged-/usr on them.
> 
> So, my guess would be that the people who dislike merged-/usr are also
> the ones who dislike systemd, no? i.e. do they really matter if we are
> talking about what to support in systemd? They'd not use our stuff
> anyway, so why bother?
> 
> > I think it would be ok if systemd drops support for installing itself
> > in /lib/systemd; we would just move everything under /usr/lib/systemd,
> > and possibly set up some symlinks in /lib/systemd for the
> > transition.
> 
> You guys are making your life hell, because you are afraid if making
> it difficult...
> 
> Lennart

And regarding re-installing, Ubuntu and Debian are doing the transition
on the live filesystem, no reinstall required (I think other distros
did the same). You can find the script that does it in this repository:
https://salsa.debian.org/md/usrmerge apart from details about multi-
arch lib directories, it should be adaptable to other distributions.

-- 
Kind regards,
Luca Boccassi
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