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.
_=[ 'exec' '/bin/sh' '-c' '''
command -v python3.9 >/dev/null && exec python3.9 "$0" "$@"
command -v python3.8 >/dev/null && exec python3.8 "$0" "$@"
command -v python3.7 >/dev/null && exec python3.7 "$0" "$@"
command -v python3.6 >/dev/null && exec python3.6 "$0" "$@"
command -v python3 >/dev/null && exec python3 "$0" "$@"
exec python "$0" "$@"
''' "$0" "$@"
]
del _

import sys
try:
  from shutil import which
except ImportError:
  from distutils.spawn import find_executable as which

print('Node.js configure: Found Python {}.{}.{}...'.format(*sys.version_info))
acceptable_pythons = ((3, 9), (3, 8), (3, 7), (3, 6))
if sys.version_info[:2] in acceptable_pythons:
  import configure
else:
  python_cmds = ['python{}.{}'.format(*vers) for vers in acceptable_pythons]
  sys.stderr.write('Please use {}.\n'.format(' or '.join(python_cmds)))
  for python_cmd in python_cmds:
      python_cmd_path = which(python_cmd)
      if python_cmd_path and 'pyenv/shims' not in python_cmd_path:
        sys.stderr.write('\t{} {}\n'.format(python_cmd_path, ' '.join(sys.argv[:1])))
  sys.exit(1)