[Bug 1856753] Re: python 2.7.17-1~18.04 causes ImportError in ujson.so

[Peter Kolbus]

Using python-ujson is not an option unfortunately as my full use case
also involves a virtualenv.

That said, I’m wondering if this may also cause problems in python-ujson
the next time the deb needs to be built from sources, perhaps in a mass
rebuild?

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Title:
  python 2.7.17-1~18.04 causes ImportError in ujson.so

Status in python2.7 package in Ubuntu:
  Invalid

Bug description:
  With python 2.7.17, ujson==1.35 does not install from PyPI properly.
  This was not a problem with 2.7.15-4ubuntu4~18.04.2.

  The root cause is likely during the `bdist_wheel` operation, as a whl
  built with python 2.7.15 will install and function under 2.7.17.

  Steps to reproduce are as follows; I have been reproducing this in the
  ubuntu/bionic Docker container:

   apt-get update && apt-get -y install python-pip python2.7-dev
   pip install ujson
   python -c "import ujson"

  The resulting error is:

   ImportError: /usr/local/lib/python2.7/dist-packages/ujson.so:
  undefined symbol: Buffer_AppendShortHexUnchecked

  A diff of dpkg-query -W between working and failing containers
  follows. (this is from the full environment, not the MCVE above --
  therefore unrelated packages are shown in the diff).

  --- packages.ok	2019-12-17 13:31:58.782715627 -0600
  +++ packages.fail	2019-12-17 13:28:36.060153358 -0600
  @@ -34,8 +34,8 @@
   gcc-7-base:amd64	7.4.0-1ubuntu1~18.04.1
   gcc-8-base:amd64	8.3.0-6ubuntu1~18.04.1
   gir1.2-glib-2.0:amd64	1.56.1-1
  -git	1:2.17.1-1ubuntu0.4
  -git-man	1:2.17.1-1ubuntu0.4
  +git	1:2.17.1-1ubuntu0.5
  +git-man	1:2.17.1-1ubuntu0.5
   gnupg	2.2.4-1ubuntu1.2
   gnupg-l10n	2.2.4-1ubuntu1.2
   gnupg-utils	2.2.4-1ubuntu1.2
  @@ -150,10 +150,10 @@
   libpython-all-dev:amd64	2.7.15~rc1-1
   libpython-dev:amd64	2.7.15~rc1-1
   libpython-stdlib:amd64	2.7.15~rc1-1
  -libpython2.7:amd64	2.7.15-4ubuntu4~18.04.2
  -libpython2.7-dev:amd64	2.7.15-4ubuntu4~18.04.2
  -libpython2.7-minimal:amd64	2.7.15-4ubuntu4~18.04.2
  -libpython2.7-stdlib:amd64	2.7.15-4ubuntu4~18.04.2
  +libpython2.7:amd64	2.7.17-1~18.04
  +libpython2.7-dev:amd64	2.7.17-1~18.04
  +libpython2.7-minimal:amd64	2.7.17-1~18.04
  +libpython2.7-stdlib:amd64	2.7.17-1~18.04
   libpython3-dev:amd64	3.6.7-1~18.04
   libpython3-stdlib:amd64	3.6.7-1~18.04
   libpython3.6:amd64	3.6.9-1~18.04
  @@ -249,9 +249,9 @@
   python-six	1.11.0-2
   python-wheel	0.30.0-0.2
   python-xdg	0.25-4ubuntu1
  -python2.7	2.7.15-4ubuntu4~18.04.2
  -python2.7-dev	2.7.15-4ubuntu4~18.04.2
  -python2.7-minimal	2.7.15-4ubuntu4~18.04.2
  +python2.7	2.7.17-1~18.04
  +python2.7-dev	2.7.17-1~18.04
  +python2.7-minimal	2.7.17-1~18.04
   python3	3.6.7-1~18.04
   python3-asn1crypto	0.24.0-1
   python3-cffi-backend	1.11.5-1

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