configure

#!/bin/sh

# Locate an acceptable python interpreter and then re-execute the script.
# Note that the mix of single and double quotes is intentional,
# as is the fact that the ] goes on a new line.
# When a 'which' call is made for a specific version of Python on Travis CI,
# pyenv will alert which shims are available and then will fail the build.
_=[ 'exec' '/bin/sh' '-c' '''
test ${TRAVIS} && exec python "$0" "$@"  # workaround for pyenv on Travis CI
which python2.7 >/dev/null && exec python2.7 "$0" "$@"
which python3.7 >/dev/null && exec python3.7 "$0" "$@"
which python3.6 >/dev/null && exec python3.6 "$0" "$@"
which python3.5 >/dev/null && exec python3.5 "$0" "$@"
exec python "$0" "$@"
''' "$0" "$@"
]
del _

import sys
from distutils.spawn import find_executable

print('Node configure: Found Python {0}.{1}.{2}...'.format(*sys.version_info))
acceptable_pythons = ((2, 7), (3, 7), (3, 6), (3, 5))
if sys.version_info[:2] in acceptable_pythons:
  import configure
else:
  python_cmds = ['python{0}.{1}'.format(*vers) for vers in acceptable_pythons]
  sys.stderr.write('Please use {0}.\n'.format(' or '.join(python_cmds)))
  for python_cmd in python_cmds:
      python_cmd_path = find_executable(python_cmd)
      if python_cmd_path and 'pyenv/shims' not in python_cmd_path:
        sys.stderr.write('\t{0} {1}\n'.format(python_cmd_path,
                                              ' '.join(sys.argv[:1])))
  sys.exit(1)