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Re: Stretch & Safely Replacing systemd?

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On 2017-03-02 at 13:01, Patrick Bartek wrote:

> I've been considering Stretch as a clean install or dist-upgrade of
> my aging Wheezy desktop setup as well as to install on a new notebook
> I've yet to decide on.  I don't like systemd (why is unimportant to
> this query). I plan to use some other init system, probably runit.
> So ...
> 
> Just how dependent has Stretch's system become on systemd?  I don't 
> mean applications or GNOME, etc. with systemd dependency that I can 
> choose not to install, but the system itself, the guts, the basics,
> the things and tools it needs to work properly.

There are two packages which are in some sense "part of" systemd which
you will not be able to avoid: libsystemd0 and udev.

libsystemd0 is the "detect at runtime whether systemd is present"
library; it's what makes it possible for programs to use systemd when
it's there, but still work when it isn't. It might _technically_ be
possible to avoid this, but one of the packages which depends on this is
xserver-xorg-core, so for most systemd that will not be a practical
option.

udev wasn't originally a systemd thing, but is now maintained by the
systemd people, and apparently shipped from the same source package (or
at least I can't see any other reason why changes to udev would appear
in apt-listchanges under the name of "systemd").

Those are the only systemd-related packages on my current primary
machine (unless you count systemd-shim, which exists specifically to
make avoiding systemd itself possible), and I've been running it with no
apparent related issues for pretty much the entire time since the
systemd transition.


I do have to keep an eye on 'apt-get dist-upgrade' and on normal package
installs to make sure that nothing pulls in libpam-systemd and then
systemd automatically - but it's been quite a while since anything tried
to do that, and even that would only get systemd as a "normal" daemon
rather than as the init system.

systemd as the init system is provided by the systemd-sysv package. I
have that package pinned to never install in /etc/preferences:

Package: systemd-sysv
Pin: version *
Pin-Priority: -1

but this doesn't seem to be entirely effective in some cases, for
reasons I've given up on trying to track down; still, it may be making a
difference.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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Thread

Stretch & Safely Replacing systemd? Patrick Bartek <nemommxiv@gmail.com> - 2017-03-02 19:20 +0100
  Re: Stretch & Safely Replacing systemd? <tomas@tuxteam.de> - 2017-03-02 22:10 +0100
    Re: Stretch & Safely Replacing systemd? Patrick Bartek <nemommxiv@gmail.com> - 2017-03-03 18:30 +0100
  Re: Stretch & Safely Replacing systemd? The Wanderer <wanderer@fastmail.fm> - 2017-03-03 13:50 +0100
    Re: Stretch & Safely Replacing systemd? Patrick Bartek <nemommxiv@gmail.com> - 2017-03-03 19:10 +0100
      Re: Stretch & Safely Replacing systemd? The Wanderer <wanderer@fastmail.fm> - 2017-03-03 20:40 +0100
      Re: Stretch & Safely Replacing systemd? Jonathan Dowland <jmtd@debian.org> - 2017-03-06 11:40 +0100
    Re: Stretch & Safely Replacing systemd? Reco <recoverym4n@gmail.com> - 2017-03-03 19:20 +0100
      Re: Stretch & Safely Replacing systemd? The Wanderer <wanderer@fastmail.fm> - 2017-03-03 20:40 +0100
        Re: Stretch & Safely Replacing systemd? Aquarius <aquarius@tutanota.de> - 2017-03-03 22:50 +0100
          Re: Stretch & Safely Replacing systemd? AntiX GiaThnYgeia <GiaThnYgeia@openmailbox.org> - 2017-03-04 13:00 +0100
            Re: Stretch & Safely Replacing systemd? AntiX Patrick Bartek <nemommxiv@gmail.com> - 2017-03-04 17:00 +0100
            Re: Stretch & Safely Replacing systemd? AntiX songbird <songbird@anthive.com> - 2017-03-04 21:00 +0100
          Re: Stretch & Safely Replacing systemd? Patrick Bartek <nemommxiv@gmail.com> - 2017-03-04 16:40 +0100
            Re: Stretch & Safely Replacing systemd? didier gaumet <didier.gaumet@gmail.com> - 2017-03-04 22:40 +0100
              Re: Stretch & Safely Replacing systemd? Patrick Bartek <nemommxiv@gmail.com> - 2017-03-05 05:10 +0100

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