[bug#48924] Add systemd

[Efraim Flashner <efraim@flashner.co.il>]

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On Mon, Jun 14, 2021 at 02:30:10PM +0200, Ludovic Courtès wrote:
> Hi,
> 
> Leo Famulari <leo@famulari.name> skribis:
> 
> > On Sun, Jun 13, 2021 at 11:44:47PM +0200, Leo Prikler wrote:
> >> It is probably still a somewhat long and bumpy road, but in my personal
> >> opinion one that has an end.
> >> @lfam, ludo, efraim: WDYT?
> >
> > To me, it seems like we are applying a slightly higher standard to this
> > patch than to other submissions of complex packages whose functionality
> > is difficult to evaluate.
> 
> No no, I was careful to apply the same standards.  :-)  My main
> question is whether it’s usable at all:
> 
>   https://issues.guix.gnu.org/48924#1
> 
> Tony’s use case has to do with satisfying the dependencies of a
> binary-only proprietary executable:
> 
>   https://issues.guix.gnu.org/48924#2
> 
> To me, that use case alone isn’t enough to justify maintaining systemd
> in Guix proper.
> 
> However, if, as Efraim suggests, a systemd package has some uses, at
> least on foreign distros, then that’s fine with me.  It’s a very narrow
> use case (running ‘loginctl’ on a foreign distro), but why not.
> 
> Thoughts?
> 
> Ludo’.

This actually works better for on Guix System than on a foreign distro

(ins)efraim@3900XT ~/workspace/guix$ /gnu/store/khpdv70slxmvrla1q8lnkkq1cxv9pm75-systemd-247/bin/loginctl -H g4 list-sessions
SESSION  UID USER   SEAT  TTY
      1  118 sddm   seat0
  12683 1000 efraim seat0 tty2
     13 1000 efraim seat0 tty3
  15005 1000 efraim       pts/2

4 sessions listed.
(ins)efraim@3900XT ~/workspace/guix$ loginctl -H g4 list-sessions
bash: line 1: elogind-stdio-bridge: command not found

That said, the package definitely needs some work. The source URI is
autogenerated, we shouldn't need glibc as an input, and I'm guessing
that setting all the config directories to out would cause problems. Not
to mention the extra bits that don't add any value to Guix System.

-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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