[Bug 1874870] [NEW] focal do-release-upgrade broken: incompatible ksh93 replacement

[Jens Elkner]

Public bug reported:

An upgrade from bionic to focal as described on https://linuxconfig.org
/how-to-upgrade-ubuntu-to-20-04-lts-focal-fossa via do-release-upgrade
-d breaks the system, because ksh93 gets removed and the incompatible,
experimental ksh2020 gets installed.

Don't do that. ksh2020 is NOT ksh93, it is not even maintained anymore.
ksh2020 was a try of 2 completely inexperienced people, knowing C but
had no clue about ksh93.

NOTE: The current change will break a lot of scripts/apps as well,
because people using ksh93 features will have '#!/bin/ksh93' in their
scripts (similar to python2 and python3, etc.).

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1874870

Title:
  focal do-release-upgrade broken: incompatible ksh93 replacement

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  An upgrade from bionic to focal as described on
  https://linuxconfig.org/how-to-upgrade-ubuntu-to-20-04-lts-focal-fossa
  via do-release-upgrade -d breaks the system, because ksh93 gets
  removed and the incompatible, experimental ksh2020 gets installed.

  Don't do that. ksh2020 is NOT ksh93, it is not even maintained
  anymore. ksh2020 was a try of 2 completely inexperienced people,
  knowing C but had no clue about ksh93.

  NOTE: The current change will break a lot of scripts/apps as well,
  because people using ksh93 features will have '#!/bin/ksh93' in their
  scripts (similar to python2 and python3, etc.).

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1874870/+subscriptions