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#!/usr/bin/env bash
set -ueo pipefail
die () { echo "Usage: validate-python PYTHON_EXECUTABLE"; }
test $# -eq 1 || { usage 1>&2 ; exit 2; }
python="$1"
majver=$("$python" -c 'import sys; print(sys.version_info[0])')
minver=$("$python" -c 'import sys; print(sys.version_info[1])')
# May not be correct yet, i.e. actual requirement may be higher.
if test "$majver" -lt 3 || test "$majver" -eq 3 && test "$minver" -lt 7; then
# utime follow_symlinks >= 3.3
bup_version_str=$("$python" --version 2>&1)
echo "ERROR: found $bup_version_str (must be >= 3.7)" 1>&2
exit 2
fi
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