pull-debian-source fails with "ImportError: No module named request"

[Robie Basak]

On Eoan with ubuntu-dev-tools 0.171

$ /usr/bin/pull-debian-source
Traceback (most recent call last):
  File "/usr/bin/pull-debian-source", line 22, in <module>
    import urllib.request
ImportError: No module named request

Root cause: despite the "/usr/bin/python3" shebang in the source, setuptools modifies this to "/usr/bin/python" because setup.py ran with Python 2 during the build, and so the "build" pull-debian-source tool no longer works.

I'm not sure how to fix this while moving towards Python 3 without porting everything else or making pull-debian-source (and incrementally everything else until the porting is done) dual 2/3.

Workaround: hack your /usr/bin/pull-debian-source shebang to use Python 3. I also noticed that there's no dependency on python3-ubuntutools, so you may need to install that.

This bug is my fault. I had assumed that testing pull-debian-source by running it straight from the source tree would be sufficient when I ported it to Python 3 in the process of fixing a different bug.

[Robie Basak (racb)]

02:11 <ScottK> Pretty sure you can turn off shebang rewriting. I think it's dh_python, not setuptools.

[Dan Streetman (ddstreet)]

guess I should merge my pull-* rewrite to debian sometime soon.

[Mattia Rizzolo (mapreri)]

@ddstreet, yes please.

Also, the solution here is to port everything to py3-only, btw.

[Stefano Rivera (stefanor)]

Committed fix in: https://git.launchpad.net/ubuntu-dev-tools/commit/?id=7fd1a6a766f4ff52cc3a576faaed11e17773274e

[Robie Basak (racb)]

Thank you! It wasn't clear to me how to resolve this.

[Mattia Rizzolo (mapreri)]

Thank you indeed!

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-dev-tools - 0.172

---------------
ubuntu-dev-tools (0.172) unstable; urgency=medium

  [ Mattia Rizzolo ]
  * autopkgtest: Add a allow-stderr restriction, as things log to stderr.

  [ Stefano Rivera ]
  * Build-Depend on pylint (>= 2, the Python 3 version), it replaced pylint3.
  * Explicitly declare python dependencies in the python library modules (the
    setup.py doesn't provide these) and ubuntu-dev-tools itself.
  * dh_python2 doesn't generate a python dependency in ubuntu-dev-tools, now
    that it's scripts-only, so manually declare one.
  * Install pull-debian-source as python 3. It was ported, and doesn't work
    under python 2 any more. LP: #1841127
  * Use dh_install to split the build into multiple binary packages.

 -- Mattia Rizzolo <email address hidden> Wed, 04 Sep 2019 08:44:51 +0200