[Bug 1898152] Re: upgrade fails to calculate if gnuradio-dev is installed

[Steve Langasek]

Hello Neil, or anyone else affected,

Accepted ubuntu-release-upgrader into focal-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/ubuntu-release-upgrader/1:20.04.31 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ubuntu-release-upgrader (Ubuntu Focal)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-focal

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https://bugs.launchpad.net/bugs/1898152

Title:
  upgrade fails to calculate if gnuradio-dev is installed

Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress
Status in ubuntu-release-upgrader source package in Focal:
  Fix Committed

Bug description:
  Impact
  ------
  Users with the package gnuradio-dev installed on their system are unable to upgrade from Ubuntu 18.04 LTS to Ubuntu 20.04 LTS as the upgrade is not calculatable. Given that changes to the python to python2 quirk have been previously made to ubuntu-release-upgrader we should ensure those previous test cases (LP: #1887544) still work. It isn't necessary to run the full upgrade go though, just calculating it should be sufficient.

  Test Case
  ---------
  [gnuradio-dev]
  1) On an Ubuntu 18.04 LTS system install gnuradio-dev (or some set of packages which depend on it)
  2) Run do-release-upgrade
  3) Observe a message regarding the failure to calculate the upgrade

  With the dist-upgrader from -proposed there will be no such failure to
  calculate the upgrade.

  [python-dbg]
  1) On an Ubuntu 18.04 LTS system install python-qt4-dbg (or some set of packages which depend on it)
  2) Run do-release-upgrade
  3) Observe a message regarding a failure to calculate the upgrade

  With the dist-upgrader from -proposed there will be no such failure to
  calculate the upgrade.

  [python-doc]
  1) On an Ubuntu 18.04 LTS system install python-doc
  2) Run do-release-upgrade
  3) Say Y to removing obsolete packages
  4) Observe that python-doc is still installed on the system

  With the version of the dist-upgrader from -proposed python-doc will
  not be installed after the upgrade and python2-doc will be.

  [python-dev]
  1) On an Ubuntu 18.04 LTS system install python-dev
  2) Run do-release-upgrade
  3) Say Y to removing obsolete packages
  4) Observe that python-dev is still installed on the system

  With the version of the dist-ugprader from -proposed python-dev will
  not be installed after the upgrade and python2-dev will be installed.
  Additionally, python-dev-is-python2 will be installed.

  Where Problems Could Occur
  --------------------------
  As mentioned previously we could cause working upgrade paths with python- packages installed to failed. However, test cases have been added which cover those scenarios.

  SRU Team Special Note
  ---------------------
  This has not been fixed in Groovy because the code is not relevant for the upgrade path to Groovy.

  Original Description
  --------------------
  Fails complaining about possible issue with PPAs. When these are removed fails with no complaints about PPAs or anything else. Just asks for bug to be reported.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.38
  ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18
  Uname: Linux 4.15.0-118-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.17
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Oct  2 17:14:41 2020
  InstallationDate: Installed on 2016-09-07 (1485 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-10-02 (0 days ago)
  VarLogDistupgradeTermlog:

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