[Bug 1850283] Re: python-ldap package prevents python3-only build

[Bryan Quigley]

Thank you for the testing, marking as verification-done!

I also ran through checking the directory is changed (18.04):

root at charming-blowfish:~# file /usr/share/doc/python3-ldap
/usr/share/doc/python3-ldap: symbolic link to python-ldap

Upgrade to proposed

root at charming-blowfish:~# file /usr/share/doc/python3-ldap
/usr/share/doc/python3-ldap: directory

# apt autoremove
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  libdumbnet1 libfreetype6 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-ldap python-minimal python-pyasn1 python-pyasn1-modules python2.7 python2.7-minimal
0 upgraded, 0 newly installed, 12 to remove and 0 not upgraded.


root at charming-blowfish:~# dpkg -l  | grep python3-ldap
ii  python3-ldap                   3.0.0-1ubuntu0.1                   amd64        LDAP interface module for Python3

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

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https://bugs.launchpad.net/bugs/1850283

Title:
  python-ldap package prevents python3-only build

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in python-ldap package in Ubuntu:
  Fix Released
Status in python-ldap source package in Bionic:
  Fix Committed
Status in python-ldap source package in Disco:
  Fix Committed
Status in python-ldap source package in Eoan:
  Fix Committed
Status in python-ldap source package in Focal:
  Fix Released

Bug description:
  [Impact]

   * python-ldap & python3-ldap used to share documentation which resulted in python3-ldap package depending on python-ldap
   * However whilst that used to be harmless, it no longer is, due to perceived risks of pulling in unused interpreter.
   * Solution is to stop linking docs directory cross-packages like it is done in the later releases
   * As a minimal sru, auxiliary and api documentation will remain shipped in python-ldap package with -doc subpackage not being introduced.

  [Test Case]

   * Install python3-ldap from release
   * Observe that /usr/share/doc/python3-ldap is a symlink
   * Upgrade to python3-ldap from proposed
   * Observe that /usr/share/doc/python3-ldap is a directory
   * Remove python-ldap python2.7-minimal
   * Observe that python3-ldap is still installed

  [Regression Potential]

   * The changes introduced match those that are shipped in focal, sans
  introduction of the docs package

  [Other Info]
   
   * Original bug report

  By moving away from Python2 following problem occured.

  The package Package: python3-ldap (3.0.0-1) is dependent on
  Package: python-ldap (3.0.0-1).

  This has a dependency: python interactive high-level object-oriented language (default version)
  python (<< 2.8)
  python (>= 2.7~)

  see https://packages.ubuntu.com/bionic/python-ldap

  We need Canonicals support for a backport the changes from
  https://packages.debian.org/buster/python3-ldap ,which resolves this
  python2 dependency.

  Many thanks in advance.

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