[Bug 2068809] Re: changelogs not listed for PPA packages

[Nathan Teodosio]

In a 24.04 virtual machine I installed update-manager/1:24.04.8. I did

  apt-add-repository ppa:nteodosio/rebuilds

and started update-manager. It correctly showed the "Software Updater"
in the list with the change log saying

--->
Technical description
[--snip--]

Changes for update-manager versions:
Installed version: 1:24.04.8
Available version: 5:74.04.2

Version 5:74.04.2:

  * foobar
<---

which is correct.

** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-done verification-done-noble

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https://bugs.launchpad.net/bugs/2068809

Title:
  changelogs not listed for PPA packages

Status in update-manager package in Ubuntu:
  Fix Released
Status in update-manager source package in Noble:
  Fix Committed

Bug description:
  * Impact

  When clicking on a package from a PPA in update-manager, the "Changes
  for XXX versions:" section will say:

  "This update does not come from a source that supports changelogs."

  Which seems a side effect of https://blog.launchpad.net/ppa/new-
  domain-names-for-ppas , the code filter on ppa.launchpad.net in the
  url where those are using ppa.launchpadcontent.net now

  * Test case

  - enable a ppa including an update for a package you have installed
  - start update-manager and select that package
  - check the long description at the bottom
   
  it should display the changelog entry for the update

  * Regression potential

  The change is in the _extract_ppa_changelog_uri() function so a
  potential issue would impact updates coming from a ppa. Verify that
  those are correctly listed and include a valid description

  -----------------------------------------------

  The reason is that in _extract_ppa_changelog_uri() in
  /usr/lib/python3/dist-packages/UpdateManager/Core/MyCache.py it checks
  only for ppa.launchpad.net but nowadays the URI will contain
  ppa.launchpadcontent.net instead.

  With the below patch it will correctly display the changelogs:

  --- /usr/lib/python3/dist-packages/UpdateManager/Core/MyCache.py.orig	2024-04-16 11:56:33.000000000 +0200
  +++ /usr/lib/python3/dist-packages/UpdateManager/Core/MyCache.py	2024-06-08 20:33:51.462435498 +0200
  @@ -338,7 +338,7 @@ class MyCache(DistUpgrade.DistUpgradeCac

           cdt = self[name].candidate
           for uri in cdt.uris:
  -            if urlsplit(uri).hostname != "ppa.launchpad.net":
  +            if urlsplit(uri).hostname not in ("ppa.launchpad.net", "ppa.launchpadcontent.net"):
                   continue
               match = re.search("http.*/(.*)/(.*)/ubuntu/.*", uri)
               if match is not None:

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