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import os.path
from pre_commit.languages import python
from pre_commit.util import CalledProcessError
from pre_commit.util import cmd_output
from pre_commit.util import cmd_output_b
ENVIRONMENT_DIR = 'py_venv'
get_default_version = python.get_default_version
def orig_py_exe(exe: str) -> str: # pragma: no cover (platform specific)
"""A -mvenv virtualenv made from a -mvirtualenv virtualenv installs
packages to the incorrect location. Attempt to find the _original_ exe
and invoke `-mvenv` from there.
See:
- https://github.com/pre-commit/pre-commit/issues/755
- https://github.com/pypa/virtualenv/issues/1095
- https://bugs.python.org/issue30811
"""
try:
prefix_script = 'import sys; print(sys.real_prefix)'
_, prefix, _ = cmd_output(exe, '-c', prefix_script)
prefix = prefix.strip()
except CalledProcessError:
# not created from -mvirtualenv
return exe
if os.name == 'nt':
expected = os.path.join(prefix, 'python.exe')
else:
expected = os.path.join(prefix, 'bin', os.path.basename(exe))
if os.path.exists(expected):
return expected
else:
return exe
def make_venv(envdir: str, python: str) -> None:
cmd_output_b(orig_py_exe(python), '-mvenv', envdir, cwd='/')
_interface = python.py_interface(ENVIRONMENT_DIR, make_venv)
in_env, healthy, run_hook, install_environment = _interface
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