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main: add python version checking

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If an older launcher script is used with newer repo source tree, we
might be issuing python version warnings.  Plus, we want to be able
to roll Python version requirements independently of the launcher.
Add some version checking here too.

Change-Id: Ia35fc821f93c429296bdf5fd578276fef796b649
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/255592
Tested-by: Mike Frysinger <vapier@google.com>
Reviewed-by: David Pursehouse <dpursehouse@collab.net>
This commit is contained in:
Mike Frysinger 2020-02-16 15:15:53 -05:00 committed by David Pursehouse
parent af1e5dea35
commit 37f28f1b4e
1 changed files with 28 additions and 0 deletions
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28
main.py
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@ -71,6 +71,34 @@ from subcmds import all_commands
if not is_python3():
input = raw_input # noqa: F821
# NB: These do not need to be kept in sync with the repo launcher script.
# These may be much newer as it allows the repo launcher to roll between
# different repo releases while source versions might require a newer python.
#
# The soft version is when we start warning users that the version is old and
# we'll be dropping support for it. We'll refuse to work with versions older
# than the hard version.
#
# python-3.6 is in Ubuntu Bionic.
MIN_PYTHON_VERSION_SOFT = (3, 6)
MIN_PYTHON_VERSION_HARD = (3, 4)
if sys.version_info.major < 3:
print('repo: warning: Python 2 is no longer supported; '
'Please upgrade to Python {}.{}+.'.format(*MIN_PYTHON_VERSION_SOFT),
file=sys.stderr)
else:
if sys.version_info < MIN_PYTHON_VERSION_HARD:
print('repo: error: Python 3 version is too old; '
'Please upgrade to Python {}.{}+.'.format(*MIN_PYTHON_VERSION_SOFT),
file=sys.stderr)
sys.exit(1)
elif sys.version_info < MIN_PYTHON_VERSION_SOFT:
print('repo: warning: your Python 3 version is no longer supported; '
'Please upgrade to Python {}.{}+.'.format(*MIN_PYTHON_VERSION_SOFT),
file=sys.stderr)
global_options = optparse.OptionParser(
usage='repo [-p|--paginate|--no-pager] COMMAND [ARGS]',
add_help_option=False)