[Bug 1771791] Re: Need to pre-depend on stuff used by systemctl, so systemctl works in other package's preinst

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 237-3ubuntu10.2

---------------
systemd (237-3ubuntu10.2) bionic; urgency=medium

  * logind: backport v238/v239 fixes for handling DRM devices.
    These changes introduce all the fixes that correct handling of open fd's
    related to the DRM devices, as used by for example NVIDIA GPUs. This backport
    includes some refactoring, corrections, and comment updates. This to insure
    that correct history is preserved, code comments match reality, and to ease
    backporting logind fixes in the future SRUs. (LP: #1777099)
  * Disable dh_installinit generation of tmpfiles for the systemd package.
    Replace with a manual safe call to systemd-tmpfiles which will process any
    updates to the tmpfiles shipped by systemd package, taking into account any
    overrides shipped by other packages, sysadmin, or specified in the runtime
    directories. (LP: #1748147)

systemd (237-3ubuntu10.1) bionic; urgency=medium

  [ Dimitri John Ledkov ]
  * hwdb: Fix wlan/rfkill keycode on Dell systems. (LP: #1762385)
  * Cherrypick upstream fix for corrected detection of Virtualbox & Xen.
    (LP: #1768104)
  * Further improve captive portal workarounds.
    Retry any NXDOMAIN results with lower feature levels, instead of just those
    with 'secure' in the domain name. (LP: #1766969)

  [ Michael Biebl ]
  * Add dependencies of libsystemd-shared to Pre-Depends.
    This is necessary so systemctl is functional at all times during a
    dist-upgrade. (Closes: #897986) (LP: #1771791)

  [ Mario Limonciello ]
  * Fix hibernate disk offsets.
    Configure resume offset via sysfs, to enable resume from a swapfile.
    (LP: #1760106)

 -- Dimitri John Ledkov 🌈 <xnox at ubuntu.com>  Fri, 22 Jun 2018 13:55:09
+0100

** Changed in: systemd (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1771791

Title:
  Need to pre-depend on stuff used by systemctl, so systemctl works in
  other package's preinst

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Bionic:
  Fix Released
Status in systemd source package in Cosmic:
  Fix Committed
Status in systemd package in Debian:
  Fix Released

Bug description:
  [Impact]
  systemd used to pre-depend on the libraries used by systemctl or something, but now systemctl uses libsystemd-shared, and there are no pre-depends for that, meaning that systemctl fails in maintainer scripts of other packages.

  [Test case]
  Grab the apt-clone file from comment #20 in bug 1766890, and upgrade it to bionic with apt dist-upgrade -o APT::Immediate-Configure=0. Make sure to not see error about missing libraries in systemctl.

  [Regression potential]
  Installation ordering changes. Might make things harder for apt to solve.

  [Other info]
  Debian 897986

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