Bug#946456: systemd: Provide systemd-sysusers as an independent package

[Felipe Sateler]

On Thu, Jan 30, 2020 at 6:40 PM Michael Biebl <biebl at debian.org> wrote:

> Hi Felipe
>
> Am 30.01.20 um 22:30 schrieb Felipe Sateler:
> >
> >
> > On Thu, Jan 30, 2020 at 1:39 PM Michael Biebl <biebl at debian.org
> > <mailto:biebl at debian.org>> wrote:
> >
> >     Am 28.01.20 um 17:27 schrieb Ansgar:
> >     > On Tue, 2020-01-28 at 16:51 +0100, Michael Biebl wrote:
> >     >> Am 28.01.20 um 14:59 schrieb Ansgar:
> >     >>> I tried linking systemd-{sysusers,tmpfiles} statically against
> >     >>> systemd's private library earlier this month.  It increases the
> >     >>> binaries size by ~100 kB (compared to Installed-Size: 14.2 MB of
> >     >>> systemd that is just one percent).
> >     >>
> >     >> Is that 100K per binary?
> >     >
> >     > I checked my notes at it was 100 kB per binary: they are 212 kB
> larger
> >     > (sysusers 51 kB → 137 kB, tmpfiles 84 kB → 212 kB); I tested with
> >     > systemd 243-8.
> >     >
> >     > It might be possible to make it a bit smaller if one was to somehow
> >     > link libsystemd0 for functions available there (libsystemd-shared
> >     > currently duplicates those).
> >
> >
> > That is not possible. There is global state that is not to be shared.
> > See https://github.com/systemd/systemd/pull/3516#issuecomment-227482524
>
> What's your thought on how to solve this libsystemd-shared issue should
> we consider splitting out systemd-{sysusers,tmpfiles}
>
> - link statically (and carry a downstream patch for eternity)
> - move libsystemd-shared to systemd-utils and risk the breakage that can
> result from a partial/aborted upgrade
> - copy, instead of move, the binaries + libsystemd-shared and make the
> resulting systemd-utils package Conflict with systemd (instead of having
> systemd depend on systemd-utils)
> - something else?
>

I tried linking statically the "can run without systemd-pid1 tools" with
the attached patch.

Disk usage appears to increase by about 400 kb:
% dpkg --info systemd_244.1-1_amd64.deb|grep Installed

 Installed-Size: 13908
% dpkg --info ../systemd_244-3_amd64.deb|grep Installed
 Installed-Size: 14319

Maybe upstream can be persuaded to merge something like this?

-- 

Saludos,
Felipe Sateler
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