[Bug 1794589] Re: libssl1.0-dev conflicts libssl-dev

[Dimitri John Ledkov]

Default implementation of openssl in bionic is 1.1.1.
There is a small amount of packages that uses openssl1.0 at runtime in bionic, because packages in question did not migrate to 1.1.1 in time for bionic release.
It is not possible to co-install openssl 1.1.1 & 1.0 development headers and there is nothing that Ubuntu can do to fix that.
nodejs was explicitely set to use openssl1.0 in bionic.
Note that switching development headers from 1.1.1 & 1.0 is relatively painless and easy, and it should not result in any runtime libraries being removed or switched around.

** Changed in: openssl1.0 (Ubuntu)
       Status: Invalid => Won't Fix

** Changed in: openssl1.0 (Ubuntu Bionic)
       Status: Invalid => Won't Fix

** Changed in: net-snmp (Ubuntu Cosmic)
       Status: Confirmed => Invalid

** Changed in: net-snmp (Ubuntu Bionic)
       Status: Confirmed => Invalid

** Changed in: net-snmp (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1794589

Title:
  libssl1.0-dev conflicts libssl-dev

Status in net-snmp package in Ubuntu:
  Invalid
Status in nodejs package in Ubuntu:
  Invalid
Status in openssl1.0 package in Ubuntu:
  Won't Fix
Status in net-snmp source package in Bionic:
  Invalid
Status in nodejs source package in Bionic:
  Invalid
Status in openssl1.0 source package in Bionic:
  Won't Fix
Status in net-snmp source package in Cosmic:
  Invalid
Status in nodejs source package in Cosmic:
  Invalid
Status in openssl1.0 source package in Cosmic:
  Invalid

Bug description:
  [impact]

  The libssl1.0-dev package conflicts with the libssl-dev package, so
  this leads to all packages that depend on libssl1.0-dev to conflict
  with all packages that depend on libssl-dev; as well as all packages
  that depend on those packages (and so on).

  [test case]

  On a Bionic system (or Cosmic), install libssl-dev, and/or any package that depends on it:
  http://qa.ubuntuwire.org/rdepends/v1/bionic/any/libssl-dev

  Then, try to install libssl1.0-dev, or any package that depends on it:
  http://qa.ubuntuwire.org/rdepends/v1/bionic/any/libssl1.0-dev

  see comment 15 for an example of some packages that are force-removed
  when installing libssl1.0-dev, due to conflict.

  [regression potential]

  TBD after fix is determined

  [other info]

  Original description:

  ---

  The fix for https://bugs.launchpad.net/ubuntu/+source/nodejs/+bug/1779863
  is, not surprisingly, somewhat traumatic for some users.

  In my case, installing libssl1.0-dev causes libcurl4-openssl-dev,
  libssh-dev, and libssl-dev to be uninstalled, which makes some of our
  internal packages fail to build.

  Commenting out universe from bionic-updates in /etc/apt/sources.list
  would work around this, but that's not going to fly for everybody.

  nodejs appears to be the tail wagging the dog now, and that's rather
  uncomfortable.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: nodejs-dev (not installed)
  ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
  Uname: Linux 4.15.0-34-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Sep 26 11:03:51 2018
  SourcePackage: nodejs
  UpgradeStatus: Upgraded to bionic on 2018-04-30 (148 days ago)

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