Improve command-not-found package headers

https://salsa.debian.org/cpython-team/python3-defaults/-/merge_requests/3

https://salsa.debian.org/cpython-team/python-defaults/-/merge_requests/1

https://salsa.debian.org/cpython-team/python3/-/merge_requests/5

https://salsa.debian.org/cpython-team/python2/-/merge_requests/2

This bug was fixed in the package python3.8 - 3.8.2-1ubuntu1

---------------
python3.8 (3.8.2-1ubuntu1) focal; urgency=medium

  * Add XB-Cnf-Visible-Pkgname header on the python*-minimal package to
    point command-not-found at the full one. LP: #1867157

 -- Dimitri John Ledkov <email address hidden> Fri, 13 Mar 2020 10:14:16 +0000

This bug was fixed in the package python2.7 - 2.7.17-1ubuntu6

---------------
python2.7 (2.7.17-1ubuntu6) focal; urgency=medium

  * Add XB-Cnf-Visible-Pkgname header on the python*-minimal package to
    point command-not-found at the full one. LP: #1867157

 -- Dimitri John Ledkov <email address hidden> Fri, 13 Mar 2020 12:42:15 +0000

This bug was fixed in the package python-defaults - 2.7.17-2ubuntu4

---------------
python-defaults (2.7.17-2ubuntu4) focal; urgency=medium

  * Correct command-not-found XB-Cnf headers LP: #1867157:
    - Drop Extra-Commands headers, not needed
    - Add XB- to ensure Visible-Pkgname actually is included in the binary
      package heders

 -- Dimitri John Ledkov <email address hidden> Fri, 13 Mar 2020 12:31:23 +0000

This bug was fixed in the package python3-defaults - 3.8.2-0ubuntu2

---------------
python3-defaults (3.8.2-0ubuntu2) focal; urgency=medium

  [ Dimitri John Ledkov ]
  * Correct command-not-found XB-Cnf headers LP: #1867157:
    - Drop Extra-Commands headers not needed
    - Add XB- to ensure Visible-Pkgname actually is included in the binary
      package heders

  [ Stuart Prescott ]
  * Use unbuffered IO to pass filenames to py_compile (Closes: #953056)
    LP: #1863414

 -- Dimitri John Ledkov <email address hidden> Fri, 13 Mar 2020 12:20:20 +0000

Hello Dimitri, or anyone else affected,

Accepted python3.8 into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python3.8/3.8.5-1~20.04 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.

All autopkgtests for the newly accepted python3.8 (3.8.5-1~20.04) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

ros-geometry2/0.6.6-1build3 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#python3.8

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

# /usr/lib/command-not-found python3.7

Command 'python3.7' not found, did you mean:

  command 'python2.7' from deb python2.7 (2.7.18-1~20.04)
  command 'python3.8' from deb python3.8 (3.8.5-1~20.04)
  command 'python3.9' from deb python3.9 (3.9.0~rc1-1~20.04)

Try: apt install <deb name>

On focal, correctly shows that python3.8 is installable / available by installing python3.8 package (despite the /usr/bin/python3.8 shipped in python3.8-minimal package).

Thus cnf metadata of python3.8 3.8.5-1~20.04 is now correct.

This bug was fixed in the package python3.8 - 3.8.5-1~20.04

---------------
python3.8 (3.8.5-1~20.04) focal-proposed; urgency=medium

  * SRU: LP: #1889218. Backport Python 3.8.5 to 20.04 LTS.

python3.8 (3.8.5-1) unstable; urgency=medium

  * Python 3.8.5 release.
    - Fix issue 41295, regression on __setattr__ in multiinheritance with
       metaclasses. Closes: #965069.

python3.8 (3.8.4-1) unstable; urgency=medium

  * Python 3.8.4 release.
  * Update VCS attributes in the control file.

python3.8 (3.8.4~rc1-1) unstable; urgency=medium

  * Python 3.8.4 release candidate 1.

python3.8 (3.8.3-1) unstable; urgency=medium

  * Python 3.8.3 release.
  * Add XB-Cnf-Visible-Pkgname header on the python*-minimal package to
    point command-not-found at the full one. LP: #1867157

python3.8 (3.8.3~rc1-1) unstable; urgency=medium

  * Python 3.8.3 release candidate 1.
    - Issue #38576, CVE-2019-18348: Disallow control characters in hostnames
      in http.client.
    - Issue #39503, CVE-2020-8492: Denial of service in
      urllib.request.AbstractBasicAuthHandler.

 -- Matthias Klose <email address hidden> Tue, 28 Jul 2020 14:59:40 +0200

The verification of the Stable Release Update for python3.8 has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.