[Bug 1954534] Re: package left in uninstallable state, due to "phased 20%"

[Chris Guiver]

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Title:
  package left in uninstallable state, due to "phased 20%"

Status in apt package in Ubuntu:
  New

Bug description:
  My system has been left unable to install libpulse-dev because the
  staging has caused a dead-lock.

  The maintainer of libpulse has instructed me to open a bug against
  apt.

  See:
  https://answers.launchpad.net/ubuntu/+source/pulseaudio/+question/699828

  libpulse-dev wants a matched libpulse0 which is impossible.

  This is on Ubuntu 21.10 impish-updates

  There never was a non-ubuntu apt source in the config.

  The apt db is up to date.

  The system is up to date.

  xander at gamer2:~$ sudo apt install libpulse-dev
  [sudo] password for xander:
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Some packages could not be installed. This may mean that you have
  requested an impossible situation or if you are using the unstable
  distribution that some required packages have not yet been created
  or been moved out of Incoming.
  The following information may help resolve the situation:

  The following packages have unmet dependencies:
   libpulse-dev : Depends: libpulse0 (= 1:15.0+dfsg1-1ubuntu2) but 1:15.0+dfsg1-1ubuntu2.1 is to be installed
                  Depends: libpulse-mainloop-glib0 (= 1:15.0+dfsg1-1ubuntu2) but 1:15.0+dfsg1-1ubuntu2.1 is to be installed
  E: Unable to correct problems, you have held broken packages.
  xander at gamer2:~$ apt-cache policy libpulse0
  libpulse0:
    Installed: 1:15.0+dfsg1-1ubuntu2.1
    Candidate: 1:15.0+dfsg1-1ubuntu2.1
    Version table:
       1:15.0+dfsg1-1ubuntu2.2 1 (phased 20%)
          500 http://ca.archive.ubuntu.com/ubuntu impish-updates/main amd64 Packages
   *** 1:15.0+dfsg1-1ubuntu2.1 100
          100 /var/lib/dpkg/status
       1:15.0+dfsg1-1ubuntu2 500
          500 http://ca.archive.ubuntu.com/ubuntu impish/main amd64 Packages
  xander at gamer2:~$ apt-cache policy libpulse-dev
  libpulse-dev:
    Installed: (none)
    Candidate: 1:15.0+dfsg1-1ubuntu2
    Version table:
       1:15.0+dfsg1-1ubuntu2.2 1 (phased 20%)
          500 http://ca.archive.ubuntu.com/ubuntu impish-updates/main amd64 Packages
       1:15.0+dfsg1-1ubuntu2 500
          500 http://ca.archive.ubuntu.com/ubuntu impish/main amd64 Packages

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