[OE-core] [RFCv2 0/2] Support systems with python3 as default

[Martin Hundebøll]

Since more distributions plan to move to python3, steps should be taken
to support such systems.

My previous attemt was pretty intrusive and changed all occurrences of
/usr/bin/{env ,}python to /usr/bin/env python2. Such apporach might break
on systems with no python2 alias in env, so here is a different approach.

Paul Braker suggested to auto-detect the available python version and
setup a fake environment, so I have given it a shot. This is quite simple
and much less intrusive than my first attempt. It utilizes the existing
bitbake env and simply tests a few different python names and, if a
compatible version is found, creates a symlink in ./bitbate/bin/python

Comments/suggestions are welcome!

Martin Hundebøll (2):
  scripts: use '/usr/bin/env' in shebangs with python
  scripts: modify environment to use python2 instead

 bitbake/lib/progressbar.py                         |  2 +-
 scripts/lib/wic/conf.py                            |  2 +-
 scripts/lib/wic/creator.py                         |  2 +-
 scripts/lib/wic/imager/baseimager.py               |  2 +-
 scripts/lib/wic/kickstart/__init__.py              |  2 +-
 .../lib/wic/kickstart/custom_commands/micboot.py   |  2 +-
 .../wic/kickstart/custom_commands/micpartition.py  |  2 +-
 scripts/lib/wic/msger.py                           |  2 +-
 scripts/lib/wic/plugin.py                          |  2 +-
 scripts/lib/wic/pluginbase.py                      |  2 +-
 scripts/lib/wic/utils/errors.py                    |  2 +-
 scripts/lib/wic/utils/fs_related.py                |  2 +-
 scripts/lib/wic/utils/misc.py                      |  2 +-
 scripts/lib/wic/utils/partitionedfs.py             |  2 +-
 scripts/lib/wic/utils/runner.py                    |  2 +-
 scripts/oe-buildenv-internal                       | 30 +++++---------
 scripts/pybootchartgui/pybootchartgui.py           |  2 +-
 scripts/python-env.sh                              | 46 ++++++++++++++++++++++
 18 files changed, 72 insertions(+), 36 deletions(-)
 create mode 100755 scripts/python-env.sh

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2.1.2