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from __future__ import annotations
import contextlib
import os
from typing import Generator
from typing import Sequence
from pre_commit.envcontext import envcontext
from pre_commit.envcontext import PatchesT
from pre_commit.envcontext import SubstitutionT
from pre_commit.envcontext import UNSET
from pre_commit.envcontext import Var
from pre_commit.languages import helpers
from pre_commit.prefix import Prefix
from pre_commit.util import cmd_output_b
ENVIRONMENT_DIR = 'conda'
get_default_version = helpers.basic_get_default_version
health_check = helpers.basic_health_check
run_hook = helpers.basic_run_hook
def get_env_patch(env: str) -> PatchesT:
# On non-windows systems executable live in $CONDA_PREFIX/bin, on Windows
# they can be in $CONDA_PREFIX/bin, $CONDA_PREFIX/Library/bin,
# $CONDA_PREFIX/Scripts and $CONDA_PREFIX. Whereas the latter only
# seems to be used for python.exe.
path: SubstitutionT = (os.path.join(env, 'bin'), os.pathsep, Var('PATH'))
if os.name == 'nt': # pragma: no cover (platform specific)
path = (env, os.pathsep, *path)
path = (os.path.join(env, 'Scripts'), os.pathsep, *path)
path = (os.path.join(env, 'Library', 'bin'), os.pathsep, *path)
return (
('PYTHONHOME', UNSET),
('VIRTUAL_ENV', UNSET),
('CONDA_PREFIX', env),
('PATH', path),
)
@contextlib.contextmanager
def in_env(prefix: Prefix, version: str) -> Generator[None, None, None]:
envdir = helpers.environment_dir(prefix, ENVIRONMENT_DIR, version)
with envcontext(get_env_patch(envdir)):
yield
def _conda_exe() -> str:
if os.environ.get('PRE_COMMIT_USE_MICROMAMBA'):
return 'micromamba'
elif os.environ.get('PRE_COMMIT_USE_MAMBA'):
return 'mamba'
else:
return 'conda'
def install_environment(
prefix: Prefix,
version: str,
additional_dependencies: Sequence[str],
) -> None:
helpers.assert_version_default('conda', version)
conda_exe = _conda_exe()
env_dir = helpers.environment_dir(prefix, ENVIRONMENT_DIR, version)
cmd_output_b(
conda_exe, 'env', 'create', '-p', env_dir, '--file',
'environment.yml', cwd=prefix.prefix_dir,
)
if additional_dependencies:
cmd_output_b(
conda_exe, 'install', '-p', env_dir, *additional_dependencies,
cwd=prefix.prefix_dir,
)
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