[Qemu-devel] [PATCH v3 00/13] Support building with py2 or py3

[Daniel P. Berrange]

This is an update for my previously posted series:

 v2: https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg06528.html

This series enables some level of CI testing for py3 so that our CI jobs will
get coverage of both py2 and py3 builds to avoid bitrot.

I did a test travis build with py 3.0 and py 3.6 and got success:

  https://travis-ci.org/berrange/qemu/builds/328223261

The goal was to achieve the following

  ./configure --python=/usr/bin/python3
  make
  make check

This still requires passing python path to configure explicitly. A
further improvement would be for configure to automatically detect
a pythjon 3 binary and use it preferentially to python 2.

I have not attempted to fix/validate the block I/O tests. I would expect
them to be broken, but easily fixable with the similar kind of scope
changes as seen here. I felt it better to tackle that separately to
avoid this initial series getting too large.

Although the Python 2 EOL date is 2020, we already have distros which
are not shipping Python 2 by default (Fedora >= 26 has dropped Py2 from
the default install). Any new releases of long life and/or enterprise
distros may well not ship Python 2 given that it would go EOL long
before the EOL of the distro itself. IOW QEMU does have a fairly pressing
need to be able to support Python 3 for building.

A request for py3 is tracked here:

  https://bugs.launchpad.net/qemu/+bug/1708462

NB, Patch 10 here is not related to python 3 work - it was just a
temporary pre-requisite of pulling in the keycodemapdb update.

Changes since v2:

 - Pull in fix for keycodemapdb
 - Enable testing with Travis
 - Enable testing with Fedora Docker images
 - Fix for sort ordering to fix 'make check-qapi-schema'
 - Fix for signrom data

Daniel P. Berrange (12):
  qapi: convert to use python print function instead of statement
  qapi: use items()/values() intead of iteritems()/itervalues()
  qapi: Use OrderedDict from standard library if available
  qapi: adapt to moved location of StringIO module in py3
  qapi: Adapt to moved location of 'maketrans' function in py3
  qapi: remove '-q' arg to diff when comparing QAPI output
  qapi: ensure stable sort ordering when checking QAPI entities
  scripts: ensure signrom treats data as bytes
  configure: allow use of python 3
  ui: update keycodemapdb to get py3 fixes
  travis: improve python version test coverage
  docker: change Fedora images to run with python3

Miika S (1):
  input: add missing JIS keys to virtio input

 .travis.yml                            | 14 +++++++----
 configure                              |  5 ++--
 hw/input/virtio-input-hid.c            |  7 ++++++
 qapi/ui.json                           |  5 +++-
 scripts/qapi.py                        | 43 ++++++++++++++++++++--------------
 scripts/qapi2texi.py                   | 11 +++++----
 scripts/signrom.py                     |  4 ++--
 tests/Makefile.include                 |  6 ++---
 tests/docker/dockerfiles/fedora.docker |  3 ++-
 tests/qapi-schema/test-qapi.py         | 43 +++++++++++++++++-----------------
 ui/keycodemapdb                        |  2 +-
 11 files changed, 84 insertions(+), 59 deletions(-)

-- 
2.14.3