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#!/usr/bin/env python3

"""A shim executable to put dependencies on sys.path"""

from __future__ import annotations

import argparse

import os.path

import runpy

import sys

# an exe-zipapp will have a __file__ of shim.exe/__main__.py

EXE = __file__ if os.path.isfile(__file__) else os.path.dirname(__file__)

EXE = os.path.realpath(EXE)

HERE = os.path.dirname(EXE)

WHEELDIR = os.path.join(HERE, 'wheels')

SITE_DIRS = frozenset(('dist-packages', 'site-packages'))

def main() -> int:

parser = argparse.ArgumentParser(add_help=False)

parser.add_argument('-m')

args, rest = parser.parse_known_args()

if args.m:

# try and remove site-packages from sys.path so our packages win

sys.path[:] = [

p for p in sys.path

if os.path.split(p)[1] not in SITE_DIRS

]

for wheel in sorted(os.listdir(WHEELDIR)):

sys.path.append(os.path.join(WHEELDIR, wheel))

if args.m == 'pre_commit' or args.m.startswith('pre_commit.'):

sys.executable = EXE

sys.argv[1:] = rest

runpy.run_module(args.m, run_name='__main__', alter_sys=True)

return 0

else:

cmd = (sys.executable, *sys.argv[1:])

if sys.platform == 'win32': # https://bugs.python.org/issue19124

import subprocess

return subprocess.call(cmd)

else:

os.execvp(cmd[0], cmd)

if __name__ == '__main__':

raise SystemExit(main())

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