[Bug 1764858] Re: Can't update / install / delete packages due to missing libzstd.so.1

[Tapani Tarvainen]

I encountered this error in a Xenial->Bionic upgrade today, with current
(final) Bionic (18.04.1).

Installation didn't complete, then trying apt-get -f install resulted in
the message

apt-get: error while loading shared libraries: libzstd.so.1: cannot open
shared object file: No such file or directory

Quick search confirmed there was no such file in the system.

I copied /usr/lib/x86_64-linux-gnu/libzstd.so.1.3.3 over from another machine running Bionic,
linked it to libzstd.so.1, ran apt-get -f install and then apt-get dist-upgrade, which completed
the upgrade without further problems.

It looks like apt got upgraded before libzstd was installed. Why I don't
know, but my first guess would be some rare race condition.

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https://bugs.launchpad.net/bugs/1764858

Title:
  Can't update / install / delete packages due to missing libzstd.so.1

Status in apt package in Ubuntu:
  Invalid

Bug description:
  Description:	Ubuntu Bionic Beaver (development branch)
  Release:	18.04

  After todays upgrade:

  vasily at vasily-desktop:~$ sudo apt-get update
  [sudo] пароль для vasily: 
  apt-get: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory

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