[Bug 1663164] Re: liblz4-tool packaging

[kimble]

My apt-cache policy produces a different out from yours:

# apt-cache policy liblz4-tool liblz4-1
liblz4-tool:
  Installed: (none)
  Candidate: 0.0~r131-2
  Version table:
     0.0~r131-2 500
        500 http://ubuntu.01link.hk xenial/main amd64 Packages
liblz4-1:
  Installed: 0.0~r131-2ubuntu2
  Candidate: 0.0~r131-2ubuntu2
  Version table:
 *** 0.0~r131-2ubuntu2 100
        100 /var/lib/dpkg/status
     0.0~r131-2 500
        500 http://ubuntu.01link.hk xenial/main amd64 Packages
#

Just in case, here is my /etc/apt/sources.list with comments removed:
====
deb http://ubuntu.01link.hk/ xenial main restricted
deb http://ubuntu.01link.hk/ xenial-updates main restricted
deb http://ubuntu.01link.hk/ xenial universe
deb http://ubuntu.01link.hk/ xenial-updates universe
deb http://ubuntu.01link.hk/ xenial multiverse
deb http://ubuntu.01link.hk/ xenial-updates multiverse
deb http://ubuntu.01link.hk/ xenial-backports main restricted universe multiverse
deb http://ubuntu.01link.hk/ xenial-security main restricted
deb http://ubuntu.01link.hk/ xenial-security universe
deb http://ubuntu.01link.hk/ xenial-security multiverse
deb http://qgis.org/ubuntugis xenial main
deb http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu xenial main
====

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https://bugs.launchpad.net/bugs/1663164

Title:
  liblz4-tool packaging

Status in lz4 package in Ubuntu:
  Invalid

Bug description:
  I have Lubuntu 16.04 which uses lubuntu-desktop.  That pseudo-package includes liblz4-1 (= 0.0~r131-2ubuntu2).
  I am now trying to install iRedMail_0.9.6 by means of its bash script, which calls for liblz4-tool to be installed. 
  But instead of having the dependency liblz4-1 (= 0.0~r131-2ubuntu2) liblz4-tool wants liblz4-1 (= 0.0~r131-2) and can't match it.

  ====
  $ sudo apt install liblz4-tool
  Reading package lists... Done
  Building dependency tree       
  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 to resolve the situation:

  The following packages have unmet dependencies:
   liblz4-tool : Depends: liblz4-1 (= 0.0~r131-2) but 0.0~r131-2ubuntu2 is to be installed
  E: Unable to correct problems, you have held broken packages.
  $
  ====

  
  http://packages.ubuntu.com/xenial/liblz4-tool
  Package: liblz4-tool (0.0~r131-2ubuntu2) [universe]
  Dependencies:
      liblz4-1 (= 0.0~r131-2ubuntu2)

  To reproduce:
  Install liblz4-1  (= 0.0~r131-2ubuntu2)
  Install liblz4-tool  (= 0.0~r131-2ubuntu2)

  Expected: installs OK

  Actual: Fails: "unmet dependencies:
   liblz4-tool : Depends: liblz4-1 (= 0.0~r131-2) but 0.0~r131-2ubuntu2 is to be installed"

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