[Bug 1958720] Re: python3-yaml and python-is-python2 are not co-installable in jammy

[Rolf Leggewie]

Stefano committed a change in upstream Debian git for the experimental
branch: https://salsa.debian.org/python-
team/packages/pyyaml/-/commit/1d1897f525e4cc150e7dfe50b9ada13ba3d50a9a

** Description changed:

  The packages python3-yaml and python-is-python2 are not co-installable
  in jammy and I believe they should be.  This currently prevents me from
  upgrading one of my machines from focal to jammy.
  
  Further analysis with the help of Stefano Rivera revealed that what-is-
  python no longer produces a python-is-python2 package and the changelog
- hints at that being intentional.  Jammy still has a python2, though.
+ hints at that being intentional.  Jammy still has a python2 package,
+ though.
  
  python3-yaml in jammy breaks on python (<2.7.18).  The python-is-python2
  package in focal is version 2.7.17-4 and in impish it is 2.7.18-9 and
  thus will be forcefully removed when going to jammy.

** No longer affects: what-is-python (Ubuntu)

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https://bugs.launchpad.net/bugs/1958720

Title:
  python3-yaml and python-is-python2 are not co-installable in jammy

Status in pyyaml package in Ubuntu:
  New

Bug description:
  The packages python3-yaml and python-is-python2 are not co-installable
  in jammy and I believe they should be.  This currently prevents me
  from upgrading one of my machines from focal to jammy.

  Further analysis with the help of Stefano Rivera revealed that what-
  is-python no longer produces a python-is-python2 package and the
  changelog hints at that being intentional.  Jammy still has a python2
  package, though.

  python3-yaml in jammy breaks on python (<2.7.18).  The python-is-
  python2 package in focal is version 2.7.17-4 and in impish it is
  2.7.18-9 and thus will be forcefully removed when going to jammy.

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