Public bug reported:
[Impact]
_pythonSymlinkCheck() checks that python links to the default python version.
In cosmic, python links to python2 however, so we need to check if that's the
case, and then check what python2 links to.
This breaks upgrades from cosmic to later versions, and partial upgrades
on cosmic (that is, running _pythonSymlinkCheck).
[Test case]
Run /usr/lib/ubuntu-release-upgrader/do-partial-upgrade make sure it does not
error out in the python symlink check, for example, by getting to the UI where
it shows the upgrades.
[Regression potential]
Practically none for cosmic users, as the function currently is guaranteed to
fail.
When running the code on older releases (which happens due to the way
release upgrading works), the code now allows python to symlink to
python2, even where that is not the case in the packaging. But anything
else would complicate the check a bit too much.
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: In Progress
** Affects: ubuntu-release-upgrader (Ubuntu Cosmic)
Importance: Undecided
Status: Triaged
** Also affects: ubuntu-release-upgrader (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => In Progress
** Changed in: ubuntu-release-upgrader (Ubuntu Cosmic)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1800823
Title:
_pythonSymlinkCheck does not work on cosmic+
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