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-rw-r--r--pre_commit/languages/coursier.py71
1 files changed, 71 insertions, 0 deletions
diff --git a/pre_commit/languages/coursier.py b/pre_commit/languages/coursier.py
new file mode 100644
index 0000000..2841467
--- /dev/null
+++ b/pre_commit/languages/coursier.py
@@ -0,0 +1,71 @@
+import contextlib
+import os
+from typing import Generator
+from typing import Sequence
+from typing import Tuple
+
+from pre_commit.envcontext import envcontext
+from pre_commit.envcontext import PatchesT
+from pre_commit.envcontext import Var
+from pre_commit.hook import Hook
+from pre_commit.languages import helpers
+from pre_commit.prefix import Prefix
+from pre_commit.util import clean_path_on_failure
+
+ENVIRONMENT_DIR = 'coursier'
+
+get_default_version = helpers.basic_get_default_version
+healthy = helpers.basic_healthy
+
+
+def install_environment(
+ prefix: Prefix,
+ version: str,
+ additional_dependencies: Sequence[str],
+) -> None: # pragma: win32 no cover
+ helpers.assert_version_default('coursier', version)
+ helpers.assert_no_additional_deps('coursier', additional_dependencies)
+
+ envdir = prefix.path(helpers.environment_dir(ENVIRONMENT_DIR, version))
+ channel = prefix.path('.pre-commit-channel')
+ with clean_path_on_failure(envdir):
+ for app_descriptor in os.listdir(channel):
+ _, app_file = os.path.split(app_descriptor)
+ app, _ = os.path.splitext(app_file)
+ helpers.run_setup_cmd(
+ prefix,
+ (
+ 'cs',
+ 'install',
+ '--default-channels=false',
+ f'--channel={channel}',
+ app,
+ f'--dir={envdir}',
+ ),
+ )
+
+
+def get_env_patch(target_dir: str) -> PatchesT: # pragma: win32 no cover
+ return (
+ ('PATH', (target_dir, os.pathsep, Var('PATH'))),
+ )
+
+
+@contextlib.contextmanager
+def in_env(
+ prefix: Prefix,
+) -> Generator[None, None, None]: # pragma: win32 no cover
+ target_dir = prefix.path(
+ helpers.environment_dir(ENVIRONMENT_DIR, get_default_version()),
+ )
+ with envcontext(get_env_patch(target_dir)):
+ yield
+
+
+def run_hook(
+ hook: Hook,
+ file_args: Sequence[str],
+ color: bool,
+) -> Tuple[int, bytes]: # pragma: win32 no cover
+ with in_env(hook.prefix):
+ return helpers.run_xargs(hook, hook.cmd, file_args, color=color)