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from __future__ import annotations
import contextlib
import os.path
from collections.abc import Generator
from collections.abc import Sequence
from pre_commit import lang_base
from pre_commit.envcontext import envcontext
from pre_commit.envcontext import PatchesT
from pre_commit.envcontext import Var
from pre_commit.errors import FatalError
from pre_commit.prefix import Prefix
ENVIRONMENT_DIR = 'hs_env'
get_default_version = lang_base.basic_get_default_version
health_check = lang_base.basic_health_check
run_hook = lang_base.basic_run_hook
def get_env_patch(target_dir: str) -> PatchesT:
bin_path = os.path.join(target_dir, 'bin')
return (('PATH', (bin_path, os.pathsep, Var('PATH'))),)
@contextlib.contextmanager
def in_env(prefix: Prefix, version: str) -> Generator[None]:
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
with envcontext(get_env_patch(envdir)):
yield
def install_environment(
prefix: Prefix,
version: str,
additional_dependencies: Sequence[str],
) -> None:
lang_base.assert_version_default('haskell', version)
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
pkgs = [*prefix.star('.cabal'), *additional_dependencies]
if not pkgs:
raise FatalError('Expected .cabal files or additional_dependencies')
bindir = os.path.join(envdir, 'bin')
os.makedirs(bindir, exist_ok=True)
lang_base.setup_cmd(prefix, ('cabal', 'update'))
lang_base.setup_cmd(
prefix,
(
'cabal', 'install',
'--install-method', 'copy',
'--installdir', bindir,
*pkgs,
),
)
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