Merge pull request #3599 from pre-commit/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

.github/workflows/languages.yaml

@@ -21,7 +21,7 @@ jobs:
         fetch-depth: 0
     - uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: '3.10'
     - name: install deps
       run: python -mpip install -e . -r requirements-dev.txt
     - name: vars
@@ -36,10 +36,10 @@ jobs:
       matrix:
         include: ${{ fromJSON(needs.vars.outputs.languages) }}
     steps:
-    - uses: asottile/workflows/.github/actions/fast-checkout@v1.4.0
+    - uses: asottile/workflows/.github/actions/fast-checkout@v1.8.1
     - uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: '3.10'
 
     - run: echo "$CONDA\Scripts" >> "$GITHUB_PATH"
       shell: bash
@@ -65,6 +65,8 @@ jobs:
       if: matrix.os == 'windows-latest' && matrix.language == 'perl'
     - uses: haskell/actions/setup@v2
       if: matrix.language == 'haskell'
+    - uses: r-lib/actions/setup-r@v2
+      if: matrix.os == 'ubuntu-latest' && matrix.language == 'r'
 
     - name: install deps
       run: python -mpip install -e . -r requirements-dev.txt

.github/workflows/main.yml

@@ -12,12 +12,12 @@ concurrency:
 
 jobs:
   main-windows:
-    uses: asottile/workflows/.github/workflows/tox.yml@v1.6.0
+    uses: asottile/workflows/.github/workflows/tox.yml@v1.8.1
     with:
-      env: '["py39"]'
+      env: '["py310"]'
       os: windows-latest
   main-linux:
-    uses: asottile/workflows/.github/workflows/tox.yml@v1.6.0
+    uses: asottile/workflows/.github/workflows/tox.yml@v1.8.1
     with:
-      env: '["py39", "py310", "py311", "py312"]'
+      env: '["py310", "py311", "py312", "py313"]'
       os: ubuntu-latest

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.6.0
+    rev: v6.0.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
@@ -10,34 +10,34 @@ repos:
     -   id: name-tests-test
     -   id: requirements-txt-fixer
 -   repo: https://github.com/asottile/setup-cfg-fmt
-    rev: v2.5.0
+    rev: v3.2.0
     hooks:
     -   id: setup-cfg-fmt
 -   repo: https://github.com/asottile/reorder-python-imports
-    rev: v3.13.0
+    rev: v3.16.0
     hooks:
     -   id: reorder-python-imports
-        exclude: ^(pre_commit/resources/|testing/resources/python3_hooks_repo/)
-        args: [--py39-plus, --add-import, 'from __future__ import annotations']
+        exclude: ^pre_commit/resources/
+        args: [--py310-plus, --add-import, 'from __future__ import annotations']
 -   repo: https://github.com/asottile/add-trailing-comma
-    rev: v3.1.0
+    rev: v4.0.0
     hooks:
     -   id: add-trailing-comma
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v3.17.0
+    rev: v3.21.2
     hooks:
     -   id: pyupgrade
-        args: [--py39-plus]
+        args: [--py310-plus]
 -   repo: https://github.com/hhatto/autopep8
-    rev: v2.3.1
+    rev: v2.3.2
     hooks:
     -   id: autopep8
 -   repo: https://github.com/PyCQA/flake8
-    rev: 7.1.1
+    rev: 7.3.0
     hooks:
     -   id: flake8
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.11.2
+    rev: v1.19.1
     hooks:
     -   id: mypy
         additional_dependencies: [types-pyyaml]

CHANGELOG.md

@@ -1,3 +1,94 @@
+4.5.1 - 2025-12-16
+==================
+
+### Fixes
+- Fix `language: python` with `repo: local` without `additional_dependencies`.
+    - #3597 PR by @asottile.
+
+4.5.0 - 2025-11-22
+==================
+
+### Features
+- Add `pre-commit hazmat`.
+    - #3585 PR by @asottile.
+
+4.4.0 - 2025-11-08
+==================
+
+### Features
+- Add `--fail-fast` option to `pre-commit run`.
+    - #3528 PR by @JulianMaurin.
+- Upgrade `ruby-build` / `rbenv`.
+    - #3566 PR by @asottile.
+    - #3565 issue by @MRigal.
+- Add `language: unsupported` / `language: unsupported_script` as aliases
+  for `language: system` / `language: script` (which will eventually be
+  deprecated).
+    - #3577 PR by @asottile.
+- Add support docker-in-docker detection for cgroups v2.
+    - #3535 PR by @br-rhrbacek.
+    - #3360 issue by @JasonAlt.
+
+### Fixes
+- Handle when docker gives `SecurityOptions: null`.
+    - #3537 PR by @asottile.
+    - #3514 issue by @jenstroeger.
+- Fix error context for invalid `stages` in `.pre-commit-config.yaml`.
+    - #3576 PR by @asottile.
+
+4.3.0 - 2025-08-09
+==================
+
+### Features
+- `language: docker` / `language: docker_image`: detect rootless docker.
+    - #3446 PR by @matthewhughes934.
+    - #1243 issue by @dkolepp.
+- `language: julia`: avoid `startup.jl` when executing hooks.
+    - #3496 PR by @ericphanson.
+- `language: dart`: support latest dart versions which require a higher sdk
+  lower bound.
+    - #3507 PR by @bc-lee.
+
+4.2.0 - 2025-03-18
+==================
+
+### Features
+- For `language: python` first attempt a versioned python executable for
+  the default language version before consulting a potentially unversioned
+  `sys.executable`.
+    - #3430 PR by @asottile.
+
+### Fixes
+- Handle error during conflict detection when a file is named "HEAD"
+    - #3425 PR by @tusharsadhwani.
+
+4.1.0 - 2025-01-20
+==================
+
+### Features
+- Add `language: julia`.
+    - #3348 PR by @fredrikekre.
+    - #2689 issue @jmuchovej.
+
+### Fixes
+- Disable automatic toolchain switching for `language: golang`.
+    - #3304 PR by @AleksaC.
+    - #3300 issue by @AleksaC.
+    - #3149 issue by @nijel.
+- Fix `language: r` installation when initiated by RStudio.
+    - #3389 PR by @lorenzwalthert.
+    - #3385 issue by @lorenzwalthert.
+
+
+4.0.1 - 2024-10-08
+==================
+
+### Fixes
+- Fix `pre-commit migrate-config` for unquoted deprecated stages names with
+  purelib `pyyaml`.
+    - #3324 PR by @asottile.
+    - pre-commit-ci/issues#234 issue by @lorenzwalthert.
+
 4.0.0 - 2024-10-05
 ==================
 
@@ -18,7 +109,7 @@
     - #3315 PR by @asottile.
     - #2732 issue by @asottile.
 
-### Migrating
+### Updating
 - `language: python_venv` has been removed -- use `language: python` instead.
     - #3320 PR by @asottile.
     - #2734 issue by @asottile.
@@ -106,7 +197,7 @@
 - Use `time.monotonic()` for more accurate hook timing.
     - #3024 PR by @adamchainz.
 
-### Migrating
+### Updating
 - Require npm 6.x+ for `language: node` hooks.
     - #2996 PR by @RoelAdriaans.
     - #1983 issue by @henryiii.

pre_commit/all_languages.py

@@ -10,6 +10,7 @@ from pre_commit.languages import dotnet
 from pre_commit.languages import fail
 from pre_commit.languages import golang
 from pre_commit.languages import haskell
+from pre_commit.languages import julia
 from pre_commit.languages import lua
 from pre_commit.languages import node
 from pre_commit.languages import perl
@@ -18,9 +19,9 @@ from pre_commit.languages import python
 from pre_commit.languages import r
 from pre_commit.languages import ruby
 from pre_commit.languages import rust
-from pre_commit.languages import script
 from pre_commit.languages import swift
-from pre_commit.languages import system
+from pre_commit.languages import unsupported
+from pre_commit.languages import unsupported_script
 
 
 languages: dict[str, Language] = {
@@ -33,6 +34,7 @@ languages: dict[str, Language] = {
     'fail': fail,
     'golang': golang,
     'haskell': haskell,
+    'julia': julia,
     'lua': lua,
     'node': node,
     'perl': perl,
@@ -41,8 +43,8 @@ languages: dict[str, Language] = {
     'r': r,
     'ruby': ruby,
     'rust': rust,
-    'script': script,
     'swift': swift,
-    'system': system,
+    'unsupported': unsupported,
+    'unsupported_script': unsupported_script,
 }
 language_names = sorted(languages)

pre_commit/clientlib.py

@@ -6,6 +6,7 @@ import os.path
 import re
 import shlex
 import sys
+from collections.abc import Callable
 from collections.abc import Sequence
 from typing import Any
 from typing import NamedTuple
@@ -116,6 +117,7 @@ class StagesMigrationNoDefault(NamedTuple):
         if self.key not in dct:
             return
 
+        with cfgv.validate_context(f'At key: {self.key}'):
             val = dct[self.key]
             cfgv.check_array(cfgv.check_any)(val)
 
@@ -189,6 +191,42 @@ class DeprecatedDefaultStagesWarning(NamedTuple):
         raise NotImplementedError
 
 
+def _translate_language(name: str) -> str:
+    return {
+        'system': 'unsupported',
+        'script': 'unsupported_script',
+    }.get(name, name)
+
+
+class LanguageMigration(NamedTuple):  # remove
+    key: str
+    check_fn: Callable[[object], None]
+
+    def check(self, dct: dict[str, Any]) -> None:
+        if self.key not in dct:
+            return
+
+        with cfgv.validate_context(f'At key: {self.key}'):
+            self.check_fn(_translate_language(dct[self.key]))
+
+    def apply_default(self, dct: dict[str, Any]) -> None:
+        if self.key not in dct:
+            return
+
+        dct[self.key] = _translate_language(dct[self.key])
+
+    def remove_default(self, dct: dict[str, Any]) -> None:
+        raise NotImplementedError
+
+
+class LanguageMigrationRequired(LanguageMigration):  # replace with Required
+    def check(self, dct: dict[str, Any]) -> None:
+        if self.key not in dct:
+            raise cfgv.ValidationError(f'Missing required key: {self.key}')
+
+        super().check(dct)
+
+
 MANIFEST_HOOK_DICT = cfgv.Map(
     'Hook', 'id',
 
@@ -202,7 +240,7 @@ MANIFEST_HOOK_DICT = cfgv.Map(
     cfgv.Required('id', cfgv.check_string),
     cfgv.Required('name', cfgv.check_string),
     cfgv.Required('entry', cfgv.check_string),
-    cfgv.Required('language', cfgv.check_one_of(language_names)),
+    LanguageMigrationRequired('language', cfgv.check_one_of(language_names)),
     cfgv.Optional('alias', cfgv.check_string, ''),
 
     cfgv.Optional('files', check_string_regex, ''),
@@ -232,10 +270,19 @@ class InvalidManifestError(FatalError):
     pass
 
 
+def _load_manifest_forward_compat(contents: str) -> object:
+    obj = yaml_load(contents)
+    if isinstance(obj, dict):
+        check_min_version('5')
+        raise AssertionError('unreachable')
+    else:
+        return obj
+
+
 load_manifest = functools.partial(
     cfgv.load_from_filename,
     schema=MANIFEST_SCHEMA,
-    load_strategy=yaml_load,
+    load_strategy=_load_manifest_forward_compat,
     exc_tp=InvalidManifestError,
 )
 
@@ -367,8 +414,10 @@ META_HOOK_DICT = cfgv.Map(
     'Hook', 'id',
     cfgv.Required('id', cfgv.check_string),
     cfgv.Required('id', cfgv.check_one_of(tuple(k for k, _ in _meta))),
-    # language must be system
-    cfgv.Optional('language', cfgv.check_one_of({'system'}), 'system'),
+    # language must be `unsupported`
+    cfgv.Optional(
+        'language', cfgv.check_one_of({'unsupported'}), 'unsupported',
+    ),
     # entry cannot be overridden
     NotAllowed('entry', cfgv.check_any),
     *(
@@ -401,8 +450,10 @@ CONFIG_HOOK_DICT = cfgv.Map(
         for item in MANIFEST_HOOK_DICT.items
         if item.key != 'id'
         if item.key != 'stages'
+        if item.key != 'language'  # remove
     ),
     StagesMigrationNoDefault('stages', []),
+    LanguageMigration('language', cfgv.check_one_of(language_names)),  # remove
     *_COMMON_HOOK_WARNINGS,
 )
 LOCAL_HOOK_DICT = cfgv.Map(

pre_commit/commands/gc.py

@@ -12,6 +12,7 @@ from pre_commit.clientlib import load_manifest
 from pre_commit.clientlib import LOCAL
 from pre_commit.clientlib import META
 from pre_commit.store import Store
+from pre_commit.util import rmtree
 
 
 def _mark_used_repos(
@@ -26,7 +27,8 @@ def _mark_used_repos(
         for hook in repo['hooks']:
             deps = hook.get('additional_dependencies')
             unused_repos.discard((
-                store.db_repo_name(repo['repo'], deps), C.LOCAL_REPO_VERSION,
+                store.db_repo_name(repo['repo'], deps),
+                C.LOCAL_REPO_VERSION,
             ))
     else:
         key = (repo['repo'], repo['rev'])
@@ -56,17 +58,19 @@ def _mark_used_repos(
             ))
 
 
-def _gc_repos(store: Store) -> int:
-    configs = store.select_all_configs()
-    repos = store.select_all_repos()
-
-    # delete config paths which do not exist
-    dead_configs = [p for p in configs if not os.path.exists(p)]
-    live_configs = [p for p in configs if os.path.exists(p)]
+def _gc(store: Store) -> int:
+    with store.exclusive_lock(), store.connect() as db:
+        store._create_configs_table(db)
 
+        repos = db.execute('SELECT repo, ref, path FROM repos').fetchall()
         all_repos = {(repo, ref): path for repo, ref, path in repos}
         unused_repos = set(all_repos)
-    for config_path in live_configs:
+
+        configs_rows = db.execute('SELECT path FROM configs').fetchall()
+        configs = [path for path, in configs_rows]
+
+        dead_configs = []
+        for config_path in configs:
             try:
                 config = load_config(config_path)
             except InvalidConfigError:
@@ -76,14 +80,19 @@ def _gc_repos(store: Store) -> int:
                 for repo in config['repos']:
                     _mark_used_repos(store, all_repos, unused_repos, repo)
 
-    store.delete_configs(dead_configs)
-    for db_repo_name, ref in unused_repos:
-        store.delete_repo(db_repo_name, ref, all_repos[(db_repo_name, ref)])
+        paths = [(path,) for path in dead_configs]
+        db.executemany('DELETE FROM configs WHERE path = ?', paths)
+
+        db.executemany(
+            'DELETE FROM repos WHERE repo = ? and ref = ?',
+            sorted(unused_repos),
+        )
+        for k in unused_repos:
+            rmtree(all_repos[k])
+
         return len(unused_repos)
 
 
 def gc(store: Store) -> int:
-    with store.exclusive_lock():
-        repos_removed = _gc_repos(store)
-    output.write_line(f'{repos_removed} repo(s) removed.')
+    output.write_line(f'{_gc(store)} repo(s) removed.')
     return 0

pre_commit/commands/hazmat.py

@@ -0,0 +1,95 @@
+from __future__ import annotations
+
+import argparse
+import subprocess
+from collections.abc import Sequence
+
+from pre_commit.parse_shebang import normalize_cmd
+
+
+def add_parsers(parser: argparse.ArgumentParser) -> None:
+    subparsers = parser.add_subparsers(dest='tool')
+
+    cd_parser = subparsers.add_parser(
+        'cd', help='cd to a subdir and run the command',
+    )
+    cd_parser.add_argument('subdir')
+    cd_parser.add_argument('cmd', nargs=argparse.REMAINDER)
+
+    ignore_exit_code_parser = subparsers.add_parser(
+        'ignore-exit-code', help='run the command but ignore the exit code',
+    )
+    ignore_exit_code_parser.add_argument('cmd', nargs=argparse.REMAINDER)
+
+    n1_parser = subparsers.add_parser(
+        'n1', help='run the command once per filename',
+    )
+    n1_parser.add_argument('cmd', nargs=argparse.REMAINDER)
+
+
+def _cmd_filenames(cmd: tuple[str, ...]) -> tuple[
+    tuple[str, ...],
+    tuple[str, ...],
+]:
+    for idx, val in enumerate(reversed(cmd)):
+        if val == '--':
+            split = len(cmd) - idx
+            break
+    else:
+        raise SystemExit('hazmat entry must end with `--`')
+
+    return cmd[:split - 1], cmd[split:]
+
+
+def cd(subdir: str, cmd: tuple[str, ...]) -> int:
+    cmd, filenames = _cmd_filenames(cmd)
+
+    prefix = f'{subdir}/'
+    new_filenames = []
+    for filename in filenames:
+        if not filename.startswith(prefix):
+            raise SystemExit(f'unexpected file without {prefix=}: {filename}')
+        else:
+            new_filenames.append(filename.removeprefix(prefix))
+
+    cmd = normalize_cmd(cmd)
+    return subprocess.call((*cmd, *new_filenames), cwd=subdir)
+
+
+def ignore_exit_code(cmd: tuple[str, ...]) -> int:
+    cmd = normalize_cmd(cmd)
+    subprocess.call(cmd)
+    return 0
+
+
+def n1(cmd: tuple[str, ...]) -> int:
+    cmd, filenames = _cmd_filenames(cmd)
+    cmd = normalize_cmd(cmd)
+    ret = 0
+    for filename in filenames:
+        ret |= subprocess.call((*cmd, filename))
+    return ret
+
+
+def impl(args: argparse.Namespace) -> int:
+    args.cmd = tuple(args.cmd)
+    if args.tool == 'cd':
+        return cd(args.subdir, args.cmd)
+    elif args.tool == 'ignore-exit-code':
+        return ignore_exit_code(args.cmd)
+    elif args.tool == 'n1':
+        return n1(args.cmd)
+    else:
+        raise NotImplementedError(f'unexpected tool: {args.tool}')
+
+
+def main(argv: Sequence[str] | None = None) -> int:
+    parser = argparse.ArgumentParser()
+    add_parsers(parser)
+    args = parser.parse_args(argv)
+
+    return impl(args)
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())

pre_commit/commands/hook_impl.py

@@ -106,6 +106,7 @@ def _ns(
         hook=None,
         verbose=False,
         show_diff_on_failure=False,
+        fail_fast=False,
     )
 
 

pre_commit/commands/migrate_config.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import functools
 import itertools
 import textwrap
-from typing import Callable
+from collections.abc import Callable
 
 import cfgv
 import yaml
@@ -47,7 +47,8 @@ def _migrate_map(contents: str) -> str:
 
 
 def _preserve_style(n: ScalarNode, *, s: str) -> str:
-    return f'{n.style}{s}{n.style}'
+    style = n.style or ''
+    return f'{style}{s}{style}'
 
 
 def _fix_stage(n: ScalarNode) -> str:

pre_commit/commands/run.py

@@ -298,7 +298,8 @@ def _run_hooks(
             verbose=args.verbose, use_color=args.color,
         )
         retval |= current_retval
-        if current_retval and (config['fail_fast'] or hook.fail_fast):
+        fail_fast = (config['fail_fast'] or hook.fail_fast or args.fail_fast)
+        if current_retval and fail_fast:
             break
     if retval and args.show_diff_on_failure and prior_diff:
         if args.all_files:

pre_commit/file_lock.py

@@ -3,8 +3,8 @@ from __future__ import annotations
 import contextlib
 import errno
 import sys
+from collections.abc import Callable
 from collections.abc import Generator
-from typing import Callable
 
 
 if sys.platform == 'win32':  # pragma: no cover (windows)

pre_commit/git.py

@@ -126,7 +126,7 @@ def get_conflicted_files() -> set[str]:
     merge_diff_filenames = zsplit(
         cmd_output(
             'git', 'diff', '--name-only', '--no-ext-diff', '-z',
-            '-m', tree_hash, 'HEAD', 'MERGE_HEAD',
+            '-m', tree_hash, 'HEAD', 'MERGE_HEAD', '--',
         )[1],
     )
     return set(merge_conflict_filenames) | set(merge_diff_filenames)
@@ -219,7 +219,7 @@ def check_for_cygwin_mismatch() -> None:
 
         if is_cygwin_python ^ is_cygwin_git:
             exe_type = {True: '(cygwin)', False: '(windows)'}
-            logger.warn(
+            logger.warning(
                 f'pre-commit has detected a mix of cygwin python / git\n'
                 f'This combination is not supported, it is likely you will '
                 f'receive an error later in the program.\n'

pre_commit/lang_base.py

@@ -5,6 +5,7 @@ import os
 import random
 import re
 import shlex
+import sys
 from collections.abc import Generator
 from collections.abc import Sequence
 from typing import Any
@@ -171,7 +172,10 @@ def run_xargs(
 
 
 def hook_cmd(entry: str, args: Sequence[str]) -> tuple[str, ...]:
-    return (*shlex.split(entry), *args)
+    cmd = shlex.split(entry)
+    if cmd[:2] == ['pre-commit', 'hazmat']:
+        cmd = [sys.executable, '-m', 'pre_commit.commands.hazmat', *cmd[2:]]
+    return (*cmd, *args)
 
 
 def basic_run_hook(

pre_commit/languages/docker.py

@@ -1,8 +1,11 @@
 from __future__ import annotations
 
+import contextlib
+import functools
 import hashlib
 import json
 import os
+import re
 from collections.abc import Sequence
 
 from pre_commit import lang_base
@@ -16,31 +19,33 @@ get_default_version = lang_base.basic_get_default_version
 health_check = lang_base.basic_health_check
 in_env = lang_base.no_env  # no special environment for docker
 
-
-def _is_in_docker() -> bool:
-    try:
-        with open('/proc/1/cgroup', 'rb') as f:
-            return b'docker' in f.read()
-    except FileNotFoundError:
-        return False
+_HOSTNAME_MOUNT_RE = re.compile(
+    rb"""
+    /containers
+    (?:/overlay-containers)?
+    /([a-z0-9]{64})
+    (?:/userdata)?
+    /hostname
+    """,
+    re.VERBOSE,
+)
 
 
-def _get_container_id() -> str:
-    # It's assumed that we already check /proc/1/cgroup in _is_in_docker. The
-    # cpuset cgroup controller existed since cgroups were introduced so this
-    # way of getting the container ID is pretty reliable.
-    with open('/proc/1/cgroup', 'rb') as f:
-        for line in f.readlines():
-            if line.split(b':')[1] == b'cpuset':
-                return os.path.basename(line.split(b':')[2]).strip().decode()
-    raise RuntimeError('Failed to find the container ID in /proc/1/cgroup.')
+def _get_container_id() -> str | None:
+    with contextlib.suppress(FileNotFoundError):
+        with open('/proc/1/mountinfo', 'rb') as f:
+            for line in f:
+                m = _HOSTNAME_MOUNT_RE.search(line)
+                if m:
+                    return m[1].decode()
+
+    return None
 
 
 def _get_docker_path(path: str) -> str:
-    if not _is_in_docker():
-        return path
-
     container_id = _get_container_id()
+    if container_id is None:
+        return path
 
     try:
         _, out, _ = cmd_output_b('docker', 'inspect', container_id)
@@ -101,7 +106,32 @@ def install_environment(
     os.mkdir(directory)
 
 
+@functools.lru_cache(maxsize=1)
+def _is_rootless() -> bool:  # pragma: win32 no cover
+    retcode, out, _ = cmd_output_b(
+        'docker', 'system', 'info', '--format', '{{ json . }}',
+    )
+    if retcode != 0:
+        return False
+
+    info = json.loads(out)
+    try:
+        return (
+            # docker:
+            # https://docs.docker.com/reference/api/engine/version/v1.48/#tag/System/operation/SystemInfo
+            'name=rootless' in (info.get('SecurityOptions') or ()) or
+            # podman:
+            # https://docs.podman.io/en/latest/_static/api.html?version=v5.4#tag/system/operation/SystemInfoLibpod
+            info['host']['security']['rootless']
+        )
+    except KeyError:
+        return False
+
+
 def get_docker_user() -> tuple[str, ...]:  # pragma: win32 no cover
+    if _is_rootless():
+        return ()
+
     try:
         return ('-u', f'{os.getuid()}:{os.getgid()}')
     except AttributeError:

pre_commit/languages/golang.py

@@ -75,6 +75,7 @@ def get_env_patch(venv: str, version: str) -> PatchesT:
 
     return (
         ('GOROOT', os.path.join(venv, '.go')),
+        ('GOTOOLCHAIN', 'local'),
         (
             'PATH', (
                 os.path.join(venv, 'bin'), os.pathsep,
@@ -89,8 +90,7 @@ def _infer_go_version(version: str) -> str:
     if version != C.DEFAULT:
         return version
     resp = urllib.request.urlopen('https://go.dev/dl/?mode=json')
-    # TODO: 3.9+ .removeprefix('go')
-    return json.load(resp)[0]['version'][2:]
+    return json.load(resp)[0]['version'].removeprefix('go')
 
 
 def _get_url(version: str) -> str:
@@ -145,6 +145,7 @@ def install_environment(
     env = no_git_env(dict(os.environ, GOPATH=gopath))
     env.pop('GOBIN', None)
     if version != 'system':
+        env['GOTOOLCHAIN'] = 'local'
         env['GOROOT'] = os.path.join(env_dir, '.go')
         env['PATH'] = os.pathsep.join((
             os.path.join(env_dir, '.go', 'bin'), os.environ['PATH'],

pre_commit/languages/julia.py

@@ -0,0 +1,133 @@
+from __future__ import annotations
+
+import contextlib
+import os
+import shutil
+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 UNSET
+from pre_commit.prefix import Prefix
+from pre_commit.util import cmd_output_b
+
+ENVIRONMENT_DIR = 'juliaenv'
+health_check = lang_base.basic_health_check
+get_default_version = lang_base.basic_get_default_version
+
+
+def run_hook(
+        prefix: Prefix,
+        entry: str,
+        args: Sequence[str],
+        file_args: Sequence[str],
+        *,
+        is_local: bool,
+        require_serial: bool,
+        color: bool,
+) -> tuple[int, bytes]:
+    # `entry` is a (hook-repo relative) file followed by (optional) args, e.g.
+    # `bin/id.jl` or `bin/hook.jl --arg1 --arg2` so we
+    # 1) shell parse it and join with args with hook_cmd
+    # 2) prepend the hooks prefix path to the first argument (the file), unless
+    #    it is a local script
+    # 3) prepend `julia` as the interpreter
+
+    cmd = lang_base.hook_cmd(entry, args)
+    script = cmd[0] if is_local else prefix.path(cmd[0])
+    cmd = ('julia', '--startup-file=no', script, *cmd[1:])
+    return lang_base.run_xargs(
+        cmd,
+        file_args,
+        require_serial=require_serial,
+        color=color,
+    )
+
+
+def get_env_patch(target_dir: str, version: str) -> PatchesT:
+    return (
+        ('JULIA_LOAD_PATH', target_dir),
+        # May be set, remove it to not interfer with LOAD_PATH
+        ('JULIA_PROJECT', UNSET),
+    )
+
+
+@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, version)):
+        yield
+
+
+def install_environment(
+        prefix: Prefix,
+        version: str,
+        additional_dependencies: Sequence[str],
+) -> None:
+    envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
+    with in_env(prefix, version):
+        # TODO: Support language_version with juliaup similar to rust via
+        # rustup
+        # if version != 'system':
+        #     ...
+
+        # Copy Project.toml to hook env if it exist
+        os.makedirs(envdir, exist_ok=True)
+        project_names = ('JuliaProject.toml', 'Project.toml')
+        project_found = False
+        for project_name in project_names:
+            project_file = prefix.path(project_name)
+            if not os.path.isfile(project_file):
+                continue
+            shutil.copy(project_file, envdir)
+            project_found = True
+            break
+
+        # If no project file was found we create an empty one so that the
+        # package manager doesn't error
+        if not project_found:
+            open(os.path.join(envdir, 'Project.toml'), 'a').close()
+
+        # Copy Manifest.toml to hook env if it exists
+        manifest_names = ('JuliaManifest.toml', 'Manifest.toml')
+        for manifest_name in manifest_names:
+            manifest_file = prefix.path(manifest_name)
+            if not os.path.isfile(manifest_file):
+                continue
+            shutil.copy(manifest_file, envdir)
+            break
+
+        # Julia code to instantiate the hook environment
+        julia_code = """
+        @assert length(ARGS) > 0
+        hook_env = ARGS[1]
+        deps = join(ARGS[2:end], " ")
+
+        # We prepend @stdlib here so that we can load the package manager even
+        # though `get_env_patch` limits `JULIA_LOAD_PATH` to just the hook env.
+        pushfirst!(LOAD_PATH, "@stdlib")
+        using Pkg
+        popfirst!(LOAD_PATH)
+
+        # Instantiate the environment shipped with the hook repo. If we have
+        # additional dependencies we disable precompilation in this step to
+        # avoid double work.
+        precompile = isempty(deps) ? "1" : "0"
+        withenv("JULIA_PKG_PRECOMPILE_AUTO" => precompile) do
+            Pkg.instantiate()
+        end
+
+        # Add additional dependencies (with precompilation)
+        if !isempty(deps)
+            withenv("JULIA_PKG_PRECOMPILE_AUTO" => "1") do
+                Pkg.REPLMode.pkgstr("add " * deps)
+            end
+        end
+        """
+        cmd_output_b(
+            'julia', '--startup-file=no', '-e', julia_code, '--', envdir,
+            *additional_dependencies,
+            cwd=prefix.prefix_dir,
+        )

pre_commit/languages/python.py

@@ -75,6 +75,13 @@ def _find_by_py_launcher(
     return None
 
 
+def _impl_exe_name() -> str:
+    if sys.implementation.name == 'cpython':  # pragma: cpython cover
+        return 'python'
+    else:  # pragma: cpython no cover
+        return sys.implementation.name  # pypy mostly
+
+
 def _find_by_sys_executable() -> str | None:
     def _norm(path: str) -> str | None:
         _, exe = os.path.split(path.lower())
@@ -100,16 +107,23 @@ def _find_by_sys_executable() -> str | None:
 
 @functools.lru_cache(maxsize=1)
 def get_default_version() -> str:  # pragma: no cover (platform dependent)
-    # First attempt from `sys.executable` (or the realpath)
-    exe = _find_by_sys_executable()
-    if exe:
-        return exe
+    v_major = f'{sys.version_info[0]}'
+    v_minor = f'{sys.version_info[0]}.{sys.version_info[1]}'
 
-    # Next try the `pythonX.X` executable
-    exe = f'python{sys.version_info[0]}.{sys.version_info[1]}'
+    # attempt the likely implementation exe
+    for potential in (v_minor, v_major):
+        exe = f'{_impl_exe_name()}{potential}'
         if find_executable(exe):
             return exe
 
+    # next try `sys.executable` (or the realpath)
+    maybe_exe = _find_by_sys_executable()
+    if maybe_exe:
+        return maybe_exe
+
+    # maybe on windows we can find it via py launcher?
+    if sys.platform == 'win32':  # pragma: win32 cover
+        exe = f'python{v_minor}'
         if _find_by_py_launcher(exe):
             return exe
 

pre_commit/languages/r.py

@@ -15,27 +15,50 @@ from pre_commit.envcontext import PatchesT
 from pre_commit.envcontext import UNSET
 from pre_commit.prefix import Prefix
 from pre_commit.util import cmd_output
-from pre_commit.util import cmd_output_b
 from pre_commit.util import win_exe
 
 ENVIRONMENT_DIR = 'renv'
-RSCRIPT_OPTS = ('--no-save', '--no-restore', '--no-site-file', '--no-environ')
 get_default_version = lang_base.basic_get_default_version
 
+_RENV_ACTIVATED_OPTS = (
+    '--no-save', '--no-restore', '--no-site-file', '--no-environ',
+)
 
-def _execute_vanilla_r_code_as_script(
+
+def _execute_r(
         code: str, *,
         prefix: Prefix, version: str, args: Sequence[str] = (), cwd: str,
+        cli_opts: Sequence[str],
 ) -> str:
     with in_env(prefix, version), _r_code_in_tempfile(code) as f:
         _, out, _ = cmd_output(
-            _rscript_exec(), *RSCRIPT_OPTS, f, *args, cwd=cwd,
+            _rscript_exec(), *cli_opts, f, *args, cwd=cwd,
         )
     return out.rstrip('\n')
 
 
+def _execute_r_in_renv(
+        code: str, *,
+        prefix: Prefix, version: str, args: Sequence[str] = (), cwd: str,
+) -> str:
+    return _execute_r(
+        code=code, prefix=prefix, version=version, args=args, cwd=cwd,
+        cli_opts=_RENV_ACTIVATED_OPTS,
+    )
+
+
+def _execute_vanilla_r(
+        code: str, *,
+        prefix: Prefix, version: str, args: Sequence[str] = (), cwd: str,
+) -> str:
+    return _execute_r(
+        code=code, prefix=prefix, version=version, args=args, cwd=cwd,
+        cli_opts=('--vanilla',),
+    )
+
+
 def _read_installed_version(envdir: str, prefix: Prefix, version: str) -> str:
-    return _execute_vanilla_r_code_as_script(
+    return _execute_r_in_renv(
         'cat(renv::settings$r.version())',
         prefix=prefix, version=version,
         cwd=envdir,
@@ -43,7 +66,7 @@ def _read_installed_version(envdir: str, prefix: Prefix, version: str) -> str:
 
 
 def _read_executable_version(envdir: str, prefix: Prefix, version: str) -> str:
-    return _execute_vanilla_r_code_as_script(
+    return _execute_r_in_renv(
         'cat(as.character(getRversion()))',
         prefix=prefix, version=version,
         cwd=envdir,
@@ -53,7 +76,7 @@ def _read_executable_version(envdir: str, prefix: Prefix, version: str) -> str:
 def _write_current_r_version(
         envdir: str, prefix: Prefix, version: str,
 ) -> None:
-    _execute_vanilla_r_code_as_script(
+    _execute_r_in_renv(
         'renv::settings$r.version(as.character(getRversion()))',
         prefix=prefix, version=version,
         cwd=envdir,
@@ -161,7 +184,7 @@ def _cmd_from_hook(
     _entry_validate(cmd)
 
     cmd_part = _prefix_if_file_entry(cmd, prefix, is_local=is_local)
-    return (cmd[0], *RSCRIPT_OPTS, *cmd_part, *args)
+    return (cmd[0], *_RENV_ACTIVATED_OPTS, *cmd_part, *args)
 
 
 def install_environment(
@@ -204,14 +227,15 @@ def install_environment(
             renv::install(prefix_dir)
         }}
         """
-
-    with _r_code_in_tempfile(r_code_inst_environment) as f:
-        cmd_output_b(_rscript_exec(), '--vanilla', f, cwd=env_dir)
+    _execute_vanilla_r(
+        r_code_inst_environment,
+        prefix=prefix, version=version, cwd=env_dir,
+    )
 
     _write_current_r_version(envdir=env_dir, prefix=prefix, version=version)
     if additional_dependencies:
         r_code_inst_add = 'renv::install(commandArgs(trailingOnly = TRUE))'
-        _execute_vanilla_r_code_as_script(
+        _execute_r_in_renv(
             code=r_code_inst_add, prefix=prefix, version=version,
             args=additional_dependencies,
             cwd=env_dir,

pre_commit/main.py

@@ -10,6 +10,7 @@ import pre_commit.constants as C
 from pre_commit import clientlib
 from pre_commit import git
 from pre_commit.color import add_color_option
+from pre_commit.commands import hazmat
 from pre_commit.commands.autoupdate import autoupdate
 from pre_commit.commands.clean import clean
 from pre_commit.commands.gc import gc
@@ -41,7 +42,7 @@ os.environ.pop('__PYVENV_LAUNCHER__', None)
 os.environ.pop('PYTHONEXECUTABLE', None)
 
 COMMANDS_NO_GIT = {
-    'clean', 'gc', 'init-templatedir', 'sample-config',
+    'clean', 'gc', 'hazmat', 'init-templatedir', 'sample-config',
     'validate-config', 'validate-manifest',
 }
 
@@ -62,10 +63,10 @@ def _add_hook_type_option(parser: argparse.ArgumentParser) -> None:
 
 def _add_run_options(parser: argparse.ArgumentParser) -> None:
     parser.add_argument('hook', nargs='?', help='A single hook-id to run')
-    parser.add_argument('--verbose', '-v', action='store_true', default=False)
+    parser.add_argument('--verbose', '-v', action='store_true')
     mutex_group = parser.add_mutually_exclusive_group(required=False)
     mutex_group.add_argument(
-        '--all-files', '-a', action='store_true', default=False,
+        '--all-files', '-a', action='store_true',
         help='Run on all the files in the repo.',
     )
     mutex_group.add_argument(
@@ -76,6 +77,10 @@ def _add_run_options(parser: argparse.ArgumentParser) -> None:
         '--show-diff-on-failure', action='store_true',
         help='When hooks fail, run `git diff` directly afterward.',
     )
+    parser.add_argument(
+        '--fail-fast', action='store_true',
+        help='Stop after the first failing hook.',
+    )
     parser.add_argument(
         '--hook-stage',
         choices=clientlib.STAGES,
@@ -241,6 +246,11 @@ def main(argv: Sequence[str] | None = None) -> int:
 
     _add_cmd('gc', help='Clean unused cached repos.')
 
+    hazmat_parser = _add_cmd(
+        'hazmat', help='Composable tools for rare use in hook `entry`.',
+    )
+    hazmat.add_parsers(hazmat_parser)
+
     init_templatedir_parser = _add_cmd(
         'init-templatedir',
         help=(
@@ -275,7 +285,7 @@ def main(argv: Sequence[str] | None = None) -> int:
     )
     _add_hook_type_option(install_parser)
     install_parser.add_argument(
-        '--allow-missing-config', action='store_true', default=False,
+        '--allow-missing-config', action='store_true',
         help=(
             'Whether to allow a missing `pre-commit` configuration file '
             'or exit with a failure code.'
@@ -385,6 +395,8 @@ def main(argv: Sequence[str] | None = None) -> int:
             return clean(store)
         elif args.command == 'gc':
             return gc(store)
+        elif args.command == 'hazmat':
+            return hazmat.impl(args)
         elif args.command == 'hook-impl':
             return hook_impl(
                 store,

pre_commit/resources/empty_template_pubspec.yaml

@@ -1,4 +1,4 @@
 name: pre_commit_empty_pubspec
 environment:
-  sdk: '>=2.10.0'
+  sdk: '>=2.12.0'
 executables: {}

pre_commit/resources/empty_template_setup.py

@@ -1,4 +1,4 @@
 from setuptools import setup
 
 
-setup(name='pre-commit-placeholder-package', version='0.0.0')
+setup(name='pre-commit-placeholder-package', version='0.0.0', py_modules=[])

pre_commit/store.py

@@ -5,9 +5,9 @@ import logging
 import os.path
 import sqlite3
 import tempfile
+from collections.abc import Callable
 from collections.abc import Generator
 from collections.abc import Sequence
-from typing import Callable
 
 import pre_commit.constants as C
 from pre_commit import clientlib
@@ -17,7 +17,6 @@ from pre_commit.util import CalledProcessError
 from pre_commit.util import clean_path_on_failure
 from pre_commit.util import cmd_output_b
 from pre_commit.util import resource_text
-from pre_commit.util import rmtree
 
 
 logger = logging.getLogger('pre_commit')
@@ -96,7 +95,7 @@ class Store:
                     '    PRIMARY KEY (repo, ref)'
                     ');',
                 )
-                self._create_config_table(db)
+                self._create_configs_table(db)
 
             # Atomic file move
             os.replace(tmpfile, self.db_path)
@@ -215,7 +214,7 @@ class Store:
             'local', C.LOCAL_REPO_VERSION, deps, _make_local_repo,
         )
 
-    def _create_config_table(self, db: sqlite3.Connection) -> None:
+    def _create_configs_table(self, db: sqlite3.Connection) -> None:
         db.executescript(
             'CREATE TABLE IF NOT EXISTS configs ('
             '   path TEXT NOT NULL,'
@@ -232,28 +231,5 @@ class Store:
             return
         with self.connect() as db:
             # TODO: eventually remove this and only create in _create
-            self._create_config_table(db)
+            self._create_configs_table(db)
             db.execute('INSERT OR IGNORE INTO configs VALUES (?)', (path,))
-
-    def select_all_configs(self) -> list[str]:
-        with self.connect() as db:
-            self._create_config_table(db)
-            rows = db.execute('SELECT path FROM configs').fetchall()
-            return [path for path, in rows]
-
-    def delete_configs(self, configs: list[str]) -> None:
-        with self.connect() as db:
-            rows = [(path,) for path in configs]
-            db.executemany('DELETE FROM configs WHERE path = ?', rows)
-
-    def select_all_repos(self) -> list[tuple[str, str, str]]:
-        with self.connect() as db:
-            return db.execute('SELECT repo, ref, path from repos').fetchall()
-
-    def delete_repo(self, db_repo_name: str, ref: str, path: str) -> None:
-        with self.connect() as db:
-            db.execute(
-                'DELETE FROM repos WHERE repo = ? and ref = ?',
-                (db_repo_name, ref),
-            )
-        rmtree(path)

pre_commit/util.py

@@ -8,10 +8,10 @@ import shutil
 import stat
 import subprocess
 import sys
+from collections.abc import Callable
 from collections.abc import Generator
 from types import TracebackType
 from typing import Any
-from typing import Callable
 
 from pre_commit import parse_shebang
 

pre_commit/xargs.py

@@ -7,12 +7,12 @@ import multiprocessing
 import os
 import subprocess
 import sys
+from collections.abc import Callable
 from collections.abc import Generator
 from collections.abc import Iterable
 from collections.abc import MutableMapping
 from collections.abc import Sequence
 from typing import Any
-from typing import Callable
 from typing import TypeVar
 
 from pre_commit import parse_shebang

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = pre_commit
-version = 4.0.0
+version = 4.5.1
 description = A framework for managing and maintaining multi-language pre-commit hooks.
 long_description = file: README.md
 long_description_content_type = text/markdown
@@ -10,7 +10,6 @@ author_email = asottile@umich.edu
 license = MIT
 license_files = LICENSE
 classifiers =
-    License :: OSI Approved :: MIT License
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: Implementation :: CPython
@@ -24,7 +23,7 @@ install_requires =
     nodeenv>=0.11.1
     pyyaml>=5.1
     virtualenv>=20.10.0
-python_requires = >=3.9
+python_requires = >=3.10
 
 [options.packages.find]
 exclude =
@@ -53,6 +52,7 @@ check_untyped_defs = true
 disallow_any_generics = true
 disallow_incomplete_defs = true
 disallow_untyped_defs = true
+enable_error_code = deprecated
 warn_redundant_casts = true
 warn_unused_ignores = true
 

testing/get-dart.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-VERSION=2.13.4
+VERSION=2.19.6
 
 if [ "$OSTYPE" = msys ]; then
     URL="https://storage.googleapis.com/dart-archive/channels/stable/release/${VERSION}/sdk/dartsdk-windows-x64-release.zip"

testing/make-archives

@@ -16,8 +16,8 @@ from collections.abc import Sequence
 
 
 REPOS = (
-    ('rbenv', 'https://github.com/rbenv/rbenv', '38e1fbb'),
-    ('ruby-build', 'https://github.com/rbenv/ruby-build', 'ed384c8'),
+    ('rbenv', 'https://github.com/rbenv/rbenv', '10e96bfc'),
+    ('ruby-build', 'https://github.com/rbenv/ruby-build', '447468b1'),
     (
         'ruby-download',
         'https://github.com/garnieretienne/rvm-download',
@@ -57,8 +57,7 @@ def make_archive(name: str, repo: str, ref: str, destdir: str) -> str:
         arcs.sort()
 
         with gzip.GzipFile(output_path, 'wb', mtime=0) as gzipf:
-            # https://github.com/python/typeshed/issues/5491
-            with tarfile.open(fileobj=gzipf, mode='w') as tf:  # type: ignore
+            with tarfile.open(fileobj=gzipf, mode='w') as tf:
                 for arcname, abspath in arcs:
                     tf.add(
                         abspath,

testing/resources/python3_hooks_repo/.pre-commit-hooks.yaml

@@ -1,6 +0,0 @@
--   id: python3-hook
-    name: Python 3 Hook
-    entry: python3-hook
-    language: python
-    language_version: python3
-    files: \.py$

testing/resources/python3_hooks_repo/py3_hook.py

@@ -1,8 +0,0 @@
-import sys
-
-
-def main():
-    print(sys.version_info[0])
-    print(repr(sys.argv[1:]))
-    print('Hello World')
-    return 0

testing/resources/python3_hooks_repo/setup.py

@@ -1,8 +0,0 @@
-from setuptools import setup
-
-setup(
-    name='python3_hook',
-    version='0.0.0',
-    py_modules=['py3_hook'],
-    entry_points={'console_scripts': ['python3-hook = py3_hook:main']},
-)

testing/resources/system_hook_with_spaces_repo/.pre-commit-hooks.yaml

@@ -1,5 +0,0 @@
--   id: system-hook-with-spaces
-    name: System hook with spaces
-    entry: bash -c 'echo "Hello World"'
-    language: system
-    files: \.sh$

testing/util.py

@@ -40,6 +40,7 @@ def run_opts(
         color=False,
         verbose=False,
         hook=None,
+        fail_fast=False,
         remote_branch='',
         local_branch='',
         from_ref='',
@@ -65,6 +66,7 @@ def run_opts(
         color=color,
         verbose=verbose,
         hook=hook,
+        fail_fast=fail_fast,
         remote_branch=remote_branch,
         local_branch=local_branch,
         from_ref=from_ref,

testing/zipapp/make

@@ -107,9 +107,6 @@ def main() -> int:
         shebang = '/usr/bin/env python3'
         zipapp.create_archive(tmpdir, filename, interpreter=shebang)
 
-    with open(f'{filename}.sha256sum', 'w') as f:
-        subprocess.check_call(('sha256sum', filename), stdout=f)
-
     return 0
 
 

tests/clientlib_test.py

@@ -12,6 +12,8 @@ from pre_commit.clientlib import CONFIG_HOOK_DICT
 from pre_commit.clientlib import CONFIG_REPO_DICT
 from pre_commit.clientlib import CONFIG_SCHEMA
 from pre_commit.clientlib import DEFAULT_LANGUAGE_VERSION
+from pre_commit.clientlib import InvalidManifestError
+from pre_commit.clientlib import load_manifest
 from pre_commit.clientlib import MANIFEST_HOOK_DICT
 from pre_commit.clientlib import MANIFEST_SCHEMA
 from pre_commit.clientlib import META_HOOK_DICT
@@ -309,6 +311,27 @@ def test_validate_optional_sensible_regex_at_top_level(caplog, regex, warning):
     assert caplog.record_tuples == [('pre_commit', logging.WARNING, warning)]
 
 
+def test_invalid_stages_error():
+    cfg = {'repos': [sample_local_config()]}
+    cfg['repos'][0]['hooks'][0]['stages'] = ['invalid']
+
+    with pytest.raises(cfgv.ValidationError) as excinfo:
+        cfgv.validate(cfg, CONFIG_SCHEMA)
+
+    assert str(excinfo.value) == (
+        '\n'
+        '==> At Config()\n'
+        '==> At key: repos\n'
+        "==> At Repository(repo='local')\n"
+        '==> At key: hooks\n'
+        "==> At Hook(id='do_not_commit')\n"
+        # this line was missing due to the custom validator
+        '==> At key: stages\n'
+        '==> At index 0\n'
+        "=====> Expected one of commit-msg, manual, post-checkout, post-commit, post-merge, post-rewrite, pre-commit, pre-merge-commit, pre-push, pre-rebase, prepare-commit-msg but got: 'invalid'"  # noqa: E501
+    )
+
+
 def test_warning_for_deprecated_stages(caplog):
     config_obj = sample_local_config()
     config_obj['hooks'][0]['stages'] = ['commit', 'push']
@@ -359,6 +382,26 @@ def test_no_warning_for_non_deprecated_default_stages(caplog):
     assert caplog.record_tuples == []
 
 
+def test_unsupported_language_migration():
+    cfg = {'repos': [sample_local_config(), sample_local_config()]}
+    cfg['repos'][0]['hooks'][0]['language'] = 'system'
+    cfg['repos'][1]['hooks'][0]['language'] = 'script'
+
+    cfgv.validate(cfg, CONFIG_SCHEMA)
+    ret = cfgv.apply_defaults(cfg, CONFIG_SCHEMA)
+
+    assert ret['repos'][0]['hooks'][0]['language'] == 'unsupported'
+    assert ret['repos'][1]['hooks'][0]['language'] == 'unsupported_script'
+
+
+def test_unsupported_language_migration_language_required():
+    cfg = {'repos': [sample_local_config()]}
+    del cfg['repos'][0]['hooks'][0]['language']
+
+    with pytest.raises(cfgv.ValidationError):
+        cfgv.validate(cfg, CONFIG_SCHEMA)
+
+
 @pytest.mark.parametrize(
     'manifest_obj',
     (
@@ -547,3 +590,18 @@ def test_config_hook_stages_defaulting():
         'id': 'fake-hook',
         'stages': ['commit-msg', 'pre-push', 'pre-commit', 'pre-merge-commit'],
     }
+
+
+def test_manifest_v5_forward_compat(tmp_path):
+    manifest = tmp_path.joinpath('.pre-commit-hooks.yaml')
+    manifest.write_text('hooks: {}')
+
+    with pytest.raises(InvalidManifestError) as excinfo:
+        load_manifest(manifest)
+    assert str(excinfo.value) == (
+        f'\n'
+        f'==> File {manifest}\n'
+        f'=====> \n'
+        f'=====> pre-commit version 5 is required but version {C.VERSION} '
+        f'is installed.  Perhaps run `pip install --upgrade pre-commit`.'
+    )

tests/commands/gc_test.py

@@ -19,11 +19,13 @@ from testing.util import git_commit
 
 
 def _repo_count(store):
-    return len(store.select_all_repos())
+    with store.connect() as db:
+        return db.execute('SELECT COUNT(1) FROM repos').fetchone()[0]
 
 
 def _config_count(store):
-    return len(store.select_all_configs())
+    with store.connect() as db:
+        return db.execute('SELECT COUNT(1) FROM configs').fetchone()[0]
 
 
 def _remove_config_assert_cleared(store, cap_out):
@@ -153,7 +155,8 @@ def test_invalid_manifest_gcd(tempdir_factory, store, in_git_dir, cap_out):
     install_hooks(C.CONFIG_FILE, store)
 
     # we'll "break" the manifest to simulate an old version clone
-    (_, _, path), = store.select_all_repos()
+    with store.connect() as db:
+        path, = db.execute('SELECT path FROM repos').fetchone()
     os.remove(os.path.join(path, C.MANIFEST_FILE))
 
     assert _config_count(store) == 1
@@ -162,3 +165,11 @@ def test_invalid_manifest_gcd(tempdir_factory, store, in_git_dir, cap_out):
     assert _config_count(store) == 1
     assert _repo_count(store) == 0
     assert cap_out.get().splitlines()[-1] == '1 repo(s) removed.'
+
+
+def test_gc_pre_1_14_roll_forward(store, cap_out):
+    with store.connect() as db:  # simulate pre-1.14.0
+        db.executescript('DROP TABLE configs')
+
+    assert not gc(store)
+    assert cap_out.get() == '0 repo(s) removed.\n'

tests/commands/hazmat_test.py

@@ -0,0 +1,99 @@
+from __future__ import annotations
+
+import sys
+
+import pytest
+
+from pre_commit.commands.hazmat import _cmd_filenames
+from pre_commit.commands.hazmat import main
+from testing.util import cwd
+
+
+def test_cmd_filenames_no_dash_dash():
+    with pytest.raises(SystemExit) as excinfo:
+        _cmd_filenames(('no', 'dashdash', 'here'))
+    msg, = excinfo.value.args
+    assert msg == 'hazmat entry must end with `--`'
+
+
+def test_cmd_filenames_no_filenames():
+    cmd, filenames = _cmd_filenames(('hello', 'world', '--'))
+    assert cmd == ('hello', 'world')
+    assert filenames == ()
+
+
+def test_cmd_filenames_some_filenames():
+    cmd, filenames = _cmd_filenames(('hello', 'world', '--', 'f1', 'f2'))
+    assert cmd == ('hello', 'world')
+    assert filenames == ('f1', 'f2')
+
+
+def test_cmd_filenames_multiple_dashdash():
+    cmd, filenames = _cmd_filenames(('hello', '--', 'arg', '--', 'f1', 'f2'))
+    assert cmd == ('hello', '--', 'arg')
+    assert filenames == ('f1', 'f2')
+
+
+def test_cd_unexpected_filename():
+    with pytest.raises(SystemExit) as excinfo:
+        main(('cd', 'subdir', 'cmd', '--', 'subdir/1', 'not-subdir/2'))
+    msg, = excinfo.value.args
+    assert msg == "unexpected file without prefix='subdir/': not-subdir/2"
+
+
+def _norm(out):
+    return out.replace('\r\n', '\n')
+
+
+def test_cd(tmp_path, capfd):
+    subdir = tmp_path.joinpath('subdir')
+    subdir.mkdir()
+    subdir.joinpath('a').write_text('a')
+    subdir.joinpath('b').write_text('b')
+
+    with cwd(tmp_path):
+        ret = main((
+            'cd', 'subdir',
+            sys.executable, '-c',
+            'import os; print(os.getcwd());'
+            'import sys; [print(open(f).read()) for f in sys.argv[1:]]',
+            '--',
+            'subdir/a', 'subdir/b',
+        ))
+
+    assert ret == 0
+    out, err = capfd.readouterr()
+    assert _norm(out) == f'{subdir}\na\nb\n'
+    assert err == ''
+
+
+def test_ignore_exit_code(capfd):
+    ret = main((
+        'ignore-exit-code', sys.executable, '-c', 'raise SystemExit("bye")',
+    ))
+    assert ret == 0
+    out, err = capfd.readouterr()
+    assert out == ''
+    assert _norm(err) == 'bye\n'
+
+
+def test_n1(capfd):
+    ret = main((
+        'n1', sys.executable, '-c', 'import sys; print(sys.argv[1:])',
+        '--',
+        'foo', 'bar', 'baz',
+    ))
+    assert ret == 0
+    out, err = capfd.readouterr()
+    assert _norm(out) == "['foo']\n['bar']\n['baz']\n"
+    assert err == ''
+
+
+def test_n1_some_error_code():
+    ret = main((
+        'n1', sys.executable, '-c',
+        'import sys; raise SystemExit(sys.argv[1] == "error")',
+        '--',
+        'ok', 'error', 'ok',
+    ))
+    assert ret == 1

tests/commands/migrate_config_test.py

@@ -1,10 +1,26 @@
 from __future__ import annotations
 
+from unittest import mock
+
 import pytest
+import yaml
 
 import pre_commit.constants as C
 from pre_commit.clientlib import InvalidConfigError
 from pre_commit.commands.migrate_config import migrate_config
+from pre_commit.yaml import yaml_compose
+
+
+@pytest.fixture(autouse=True, params=['c', 'pure'])
+def switch_pyyaml_impl(request):
+    if request.param == 'c':
+        yield
+    else:
+        with mock.patch.dict(
+                yaml_compose.keywords,
+                {'Loader': yaml.SafeLoader},
+        ):
+            yield
 
 
 def test_migrate_config_normal_format(tmpdir, capsys):

tests/commands/run_test.py

@@ -1104,6 +1104,19 @@ def test_fail_fast_not_prev_failures(cap_out, store, repo_with_failing_hook):
     assert printed.count(b'run me!') == 1
 
 
+def test_fail_fast_run_arg(cap_out, store, repo_with_failing_hook):
+    with modify_config() as config:
+        # More than one hook to demonstrate early exit
+        config['repos'][0]['hooks'] *= 2
+    stage_a_file()
+
+    ret, printed = _do_run(
+        cap_out, store, repo_with_failing_hook, run_opts(fail_fast=True),
+    )
+    # it should have only run one hook due to the CLI flag
+    assert printed.count(b'Failing hook') == 1
+
+
 def test_classifier_removes_dne():
     classifier = Classifier(('this_file_does_not_exist',))
     assert classifier.filenames == []

tests/git_test.py

@@ -141,6 +141,15 @@ def test_get_conflicted_files_unstaged_files(in_merge_conflict):
     assert ret == {'conflict_file'}
 
 
+def test_get_conflicted_files_with_file_named_head(in_merge_conflict):
+    resolve_conflict()
+    open('HEAD', 'w').close()
+    cmd_output('git', 'add', 'HEAD')
+
+    ret = set(git.get_conflicted_files())
+    assert ret == {'conflict_file', 'HEAD'}
+
+
 MERGE_MSG = b"Merge branch 'foo' into bar\n\nConflicts:\n\tconflict_file\n"
 OTHER_MERGE_MSG = MERGE_MSG + b'\tother_conflict_file\n'
 

tests/lang_base_test.py

@@ -164,3 +164,15 @@ def test_basic_run_hook(tmp_path):
     assert ret == 0
     out = out.replace(b'\r\n', b'\n')
     assert out == b'hi hello file file file\n'
+
+
+def test_hook_cmd():
+    assert lang_base.hook_cmd('echo hi', ()) == ('echo', 'hi')
+
+
+def test_hook_cmd_hazmat():
+    ret = lang_base.hook_cmd('pre-commit hazmat cd a echo -- b', ())
+    assert ret == (
+        sys.executable, '-m', 'pre_commit.commands.hazmat',
+        'cd', 'a', 'echo', '--', 'b',
+    )

tests/languages/dart_test.py

@@ -10,7 +10,7 @@ from testing.language_helpers import run_language
 def test_dart(tmp_path):
     pubspec_yaml = '''\
 environment:
-  sdk: '>=2.10.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
 
 name: hello_world_dart
 

tests/languages/docker_image_test.py

@@ -1,10 +1,18 @@
 from __future__ import annotations
 
+import pytest
+
 from pre_commit.languages import docker_image
+from pre_commit.util import cmd_output_b
 from testing.language_helpers import run_language
 from testing.util import xfailif_windows
 
 
+@pytest.fixture(autouse=True, scope='module')
+def _ensure_image_available():
+    cmd_output_b('docker', 'run', '--rm', 'ubuntu:22.04', 'echo')
+
+
 @xfailif_windows  # pragma: win32 no cover
 def test_docker_image_hook_via_entrypoint(tmp_path):
     ret = run_language(

tests/languages/docker_test.py

@@ -14,40 +14,173 @@ from pre_commit.util import CalledProcessError
 from testing.language_helpers import run_language
 from testing.util import xfailif_windows
 
-DOCKER_CGROUP_EXAMPLE = b'''\
-12:hugetlb:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-11:blkio:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-10:freezer:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-9:cpu,cpuacct:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-8:pids:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-7:rdma:/
-6:net_cls,net_prio:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-5:cpuset:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-4:devices:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-3:memory:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-2:perf_event:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-1:name=systemd:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
-0::/system.slice/containerd.service
+DOCKER_CGROUPS_V1_MOUNTINFO_EXAMPLE = b'''\
+759 717 0:52 / / rw,relatime master:300 - overlay overlay rw,lowerdir=/var/lib/docker/overlay2/l/PCPE5P5IVGM7CFCPJR353N3ONK:/var/lib/docker/overlay2/l/EQFSDHFAJ333VEMEJD4ZTRIZCB,upperdir=/var/lib/docker/overlay2/0d9f6bf186030d796505b87d6daa92297355e47641e283d3c09d83a7f221e462/diff,workdir=/var/lib/docker/overlay2/0d9f6bf186030d796505b87d6daa92297355e47641e283d3c09d83a7f221e462/work
+760 759 0:58 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
+761 759 0:59 / /dev rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+762 761 0:60 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
+763 759 0:61 / /sys ro,nosuid,nodev,noexec,relatime - sysfs sysfs ro
+764 763 0:62 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755,inode64
+765 764 0:29 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/systemd ro,nosuid,nodev,noexec,relatime master:11 - cgroup cgroup rw,xattr,name=systemd
+766 764 0:32 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/rdma ro,nosuid,nodev,noexec,relatime master:15 - cgroup cgroup rw,rdma
+767 764 0:33 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/cpu,cpuacct ro,nosuid,nodev,noexec,relatime master:16 - cgroup cgroup rw,cpu,cpuacct
+768 764 0:34 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/cpuset ro,nosuid,nodev,noexec,relatime master:17 - cgroup cgroup rw,cpuset
+769 764 0:35 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/pids ro,nosuid,nodev,noexec,relatime master:18 - cgroup cgroup rw,pids
+770 764 0:36 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/memory ro,nosuid,nodev,noexec,relatime master:19 - cgroup cgroup rw,memory
+771 764 0:37 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/perf_event ro,nosuid,nodev,noexec,relatime master:20 - cgroup cgroup rw,perf_event
+772 764 0:38 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/net_cls,net_prio ro,nosuid,nodev,noexec,relatime master:21 - cgroup cgroup rw,net_cls,net_prio
+773 764 0:39 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/blkio ro,nosuid,nodev,noexec,relatime master:22 - cgroup cgroup rw,blkio
+774 764 0:40 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/misc ro,nosuid,nodev,noexec,relatime master:23 - cgroup cgroup rw,misc
+775 764 0:41 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/hugetlb ro,nosuid,nodev,noexec,relatime master:24 - cgroup cgroup rw,hugetlb
+776 764 0:42 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/devices ro,nosuid,nodev,noexec,relatime master:25 - cgroup cgroup rw,devices
+777 764 0:43 /docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7 /sys/fs/cgroup/freezer ro,nosuid,nodev,noexec,relatime master:26 - cgroup cgroup rw,freezer
+778 761 0:57 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw
+779 761 0:63 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k,inode64
+780 759 8:5 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/resolv.conf /etc/resolv.conf rw,relatime - ext4 /dev/sda5 rw,errors=remount-ro
+781 759 8:5 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/hostname /etc/hostname rw,relatime - ext4 /dev/sda5 rw,errors=remount-ro
+782 759 8:5 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/hosts /etc/hosts rw,relatime - ext4 /dev/sda5 rw,errors=remount-ro
+718 761 0:60 /0 /dev/console rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
+719 760 0:58 /bus /proc/bus ro,nosuid,nodev,noexec,relatime - proc proc rw
+720 760 0:58 /fs /proc/fs ro,nosuid,nodev,noexec,relatime - proc proc rw
+721 760 0:58 /irq /proc/irq ro,nosuid,nodev,noexec,relatime - proc proc rw
+722 760 0:58 /sys /proc/sys ro,nosuid,nodev,noexec,relatime - proc proc rw
+723 760 0:58 /sysrq-trigger /proc/sysrq-trigger ro,nosuid,nodev,noexec,relatime - proc proc rw
+724 760 0:64 / /proc/asound ro,relatime - tmpfs tmpfs ro,inode64
+725 760 0:65 / /proc/acpi ro,relatime - tmpfs tmpfs ro,inode64
+726 760 0:59 /null /proc/kcore rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+727 760 0:59 /null /proc/keys rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+728 760 0:59 /null /proc/timer_list rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+729 760 0:66 / /proc/scsi ro,relatime - tmpfs tmpfs ro,inode64
+730 763 0:67 / /sys/firmware ro,relatime - tmpfs tmpfs ro,inode64
+731 763 0:68 / /sys/devices/virtual/powercap ro,relatime - tmpfs tmpfs ro,inode64
+'''  # noqa: E501
+
+DOCKER_CGROUPS_V2_MOUNTINFO_EXAMPLE = b'''\
+721 386 0:45 / / rw,relatime master:218 - overlay overlay rw,lowerdir=/var/lib/docker/overlay2/l/QHZ7OM7P4AQD3XLG274ZPWAJCV:/var/lib/docker/overlay2/l/5RFG6SZWVGOG2NKEYXJDQCQYX5,upperdir=/var/lib/docker/overlay2/e4ad859fc5d4791932b9b976052f01fb0063e01de3cef916e40ae2121f6a166e/diff,workdir=/var/lib/docker/overlay2/e4ad859fc5d4791932b9b976052f01fb0063e01de3cef916e40ae2121f6a166e/work,nouserxattr
+722 721 0:48 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
+723 721 0:50 / /dev rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+724 723 0:51 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
+725 721 0:52 / /sys ro,nosuid,nodev,noexec,relatime - sysfs sysfs ro
+726 725 0:26 / /sys/fs/cgroup ro,nosuid,nodev,noexec,relatime - cgroup2 cgroup rw,nsdelegate,memory_recursiveprot
+727 723 0:47 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw
+728 723 0:53 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k,inode64
+729 721 8:3 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/resolv.conf /etc/resolv.conf rw,relatime - ext4 /dev/sda3 rw,errors=remount-ro
+730 721 8:3 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/hostname /etc/hostname rw,relatime - ext4 /dev/sda3 rw,errors=remount-ro
+731 721 8:3 /var/lib/docker/containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/hosts /etc/hosts rw,relatime - ext4 /dev/sda3 rw,errors=remount-ro
+387 723 0:51 /0 /dev/console rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
+388 722 0:48 /bus /proc/bus ro,nosuid,nodev,noexec,relatime - proc proc rw
+389 722 0:48 /fs /proc/fs ro,nosuid,nodev,noexec,relatime - proc proc rw
+525 722 0:48 /irq /proc/irq ro,nosuid,nodev,noexec,relatime - proc proc rw
+526 722 0:48 /sys /proc/sys ro,nosuid,nodev,noexec,relatime - proc proc rw
+571 722 0:48 /sysrq-trigger /proc/sysrq-trigger ro,nosuid,nodev,noexec,relatime - proc proc rw
+572 722 0:57 / /proc/asound ro,relatime - tmpfs tmpfs ro,inode64
+575 722 0:58 / /proc/acpi ro,relatime - tmpfs tmpfs ro,inode64
+576 722 0:50 /null /proc/kcore rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+577 722 0:50 /null /proc/keys rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+578 722 0:50 /null /proc/timer_list rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,inode64
+579 722 0:59 / /proc/scsi ro,relatime - tmpfs tmpfs ro,inode64
+580 725 0:60 / /sys/firmware ro,relatime - tmpfs tmpfs ro,inode64
+'''  # noqa: E501
+
+PODMAN_CGROUPS_V1_MOUNTINFO_EXAMPLE = b'''\
+1200 915 0:57 / / rw,relatime - overlay overlay rw,lowerdir=/home/asottile/.local/share/containers/storage/overlay/l/ZWAU3VY3ZHABQJRBUAFPBX7R5D,upperdir=/home/asottile/.local/share/containers/storage/overlay/72504ef163fda63838930450553b7306412ccad139a007626732b3dc43af5200/diff,workdir=/home/asottile/.local/share/containers/storage/overlay/72504ef163fda63838930450553b7306412ccad139a007626732b3dc43af5200/work,volatile,userxattr
+1204 1200 0:62 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
+1205 1200 0:63 / /dev rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,uid=1000,gid=1000,inode64
+1206 1200 0:64 / /sys ro,nosuid,nodev,noexec,relatime - sysfs sysfs rw
+1207 1205 0:65 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=100004,mode=620,ptmxmode=666
+1208 1205 0:61 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw
+1209 1200 0:53 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/.containerenv /run/.containerenv rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=814036k,mode=700,uid=1000,gid=1000,inode64
+1210 1200 0:53 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/resolv.conf /etc/resolv.conf rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=814036k,mode=700,uid=1000,gid=1000,inode64
+1211 1200 0:53 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/hosts /etc/hosts rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=814036k,mode=700,uid=1000,gid=1000,inode64
+1212 1205 0:56 / /dev/shm rw,relatime - tmpfs shm rw,size=64000k,uid=1000,gid=1000,inode64
+1213 1200 0:53 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/hostname /etc/hostname rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=814036k,mode=700,uid=1000,gid=1000,inode64
+1214 1206 0:66 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs cgroup rw,size=1024k,uid=1000,gid=1000,inode64
+1215 1214 0:43 / /sys/fs/cgroup/freezer ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer
+1216 1214 0:42 /user.slice /sys/fs/cgroup/devices ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices
+1217 1214 0:41 / /sys/fs/cgroup/hugetlb ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,hugetlb
+1218 1214 0:40 / /sys/fs/cgroup/misc ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,misc
+1219 1214 0:39 / /sys/fs/cgroup/blkio ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio
+1220 1214 0:38 / /sys/fs/cgroup/net_cls,net_prio ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls,net_prio
+1221 1214 0:37 / /sys/fs/cgroup/perf_event ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,perf_event
+1222 1214 0:36 /user.slice/user-1000.slice/user@1000.service /sys/fs/cgroup/memory ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory
+1223 1214 0:35 /user.slice/user-1000.slice/user@1000.service /sys/fs/cgroup/pids ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,pids
+1224 1214 0:34 / /sys/fs/cgroup/cpuset ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset
+1225 1214 0:33 / /sys/fs/cgroup/cpu,cpuacct ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu,cpuacct
+1226 1214 0:32 / /sys/fs/cgroup/rdma ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,rdma
+1227 1214 0:29 /user.slice/user-1000.slice/user@1000.service/apps.slice/apps-org.gnome.Terminal.slice/vte-spawn-0c50448e-b395-4d76-8b92-379f16e5066f.scope /sys/fs/cgroup/systemd ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,xattr,name=systemd
+1228 1205 0:5 /null /dev/null rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1229 1205 0:5 /zero /dev/zero rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1230 1205 0:5 /full /dev/full rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1231 1205 0:5 /tty /dev/tty rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1232 1205 0:5 /random /dev/random rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1233 1205 0:5 /urandom /dev/urandom rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1234 1204 0:67 / /proc/acpi ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+1235 1204 0:5 /null /proc/kcore rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1236 1204 0:5 /null /proc/keys rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1237 1204 0:5 /null /proc/timer_list rw,nosuid,noexec,relatime - devtmpfs udev rw,size=4031656k,nr_inodes=1007914,mode=755,inode64
+1238 1204 0:68 / /proc/scsi ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+1239 1206 0:69 / /sys/firmware ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+1240 1206 0:70 / /sys/dev/block ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+1241 1204 0:62 /asound /proc/asound ro,relatime - proc proc rw
+1242 1204 0:62 /bus /proc/bus ro,relatime - proc proc rw
+1243 1204 0:62 /fs /proc/fs ro,relatime - proc proc rw
+1244 1204 0:62 /irq /proc/irq ro,relatime - proc proc rw
+1245 1204 0:62 /sys /proc/sys ro,relatime - proc proc rw
+1256 1204 0:62 /sysrq-trigger /proc/sysrq-trigger ro,relatime - proc proc rw
+916 1205 0:65 /0 /dev/console rw,relatime - devpts devpts rw,gid=100004,mode=620,ptmxmode=666
+'''  # noqa: E501
+
+PODMAN_CGROUPS_V2_MOUNTINFO_EXAMPLE = b'''\
+685 690 0:63 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/resolv.conf /etc/resolv.conf rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=1637624k,nr_inodes=409406,mode=700,uid=1000,gid=1000,inode64
+686 690 0:63 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/hosts /etc/hosts rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=1637624k,nr_inodes=409406,mode=700,uid=1000,gid=1000,inode64
+687 692 0:50 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=64000k,uid=1000,gid=1000,inode64
+688 690 0:63 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/.containerenv /run/.containerenv rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=1637624k,nr_inodes=409406,mode=700,uid=1000,gid=1000,inode64
+689 690 0:63 /containers/overlay-containers/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7/userdata/hostname /etc/hostname rw,nosuid,nodev,relatime - tmpfs tmpfs rw,size=1637624k,nr_inodes=409406,mode=700,uid=1000,gid=1000,inode64
+690 546 0:55 / / rw,relatime - overlay overlay rw,lowerdir=/home/asottile/.local/share/containers/storage/overlay/l/NPOHYOD3PI3YW6TQSGBOVOUSK6,upperdir=/home/asottile/.local/share/containers/storage/overlay/565c206fb79f876ffd5f069b8bd7a97fb5e47d5d07396b0c395a4ed6725d4a8e/diff,workdir=/home/asottile/.local/share/containers/storage/overlay/565c206fb79f876ffd5f069b8bd7a97fb5e47d5d07396b0c395a4ed6725d4a8e/work,redirect_dir=nofollow,uuid=on,volatile,userxattr
+691 690 0:59 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
+692 690 0:61 / /dev rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755,uid=1000,gid=1000,inode64
+693 690 0:62 / /sys ro,nosuid,nodev,noexec,relatime - sysfs sysfs rw
+694 692 0:66 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=100004,mode=620,ptmxmode=666
+695 692 0:58 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw
+696 693 0:28 / /sys/fs/cgroup ro,nosuid,nodev,noexec,relatime - cgroup2 cgroup2 rw,nsdelegate,memory_recursiveprot
+698 692 0:6 /null /dev/null rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+699 692 0:6 /zero /dev/zero rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+700 692 0:6 /full /dev/full rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+701 692 0:6 /tty /dev/tty rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+702 692 0:6 /random /dev/random rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+703 692 0:6 /urandom /dev/urandom rw,nosuid,noexec,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+704 691 0:67 / /proc/acpi ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+705 691 0:6 /null /proc/kcore ro,nosuid,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+706 691 0:6 /null /proc/keys ro,nosuid,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+707 691 0:6 /null /proc/latency_stats ro,nosuid,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+708 691 0:6 /null /proc/timer_list ro,nosuid,relatime - devtmpfs udev rw,size=8147812k,nr_inodes=2036953,mode=755,inode64
+709 691 0:68 / /proc/scsi ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+710 693 0:69 / /sys/firmware ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+711 693 0:70 / /sys/dev/block ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+712 693 0:71 / /sys/devices/virtual/powercap ro,relatime - tmpfs tmpfs rw,size=0k,uid=1000,gid=1000,inode64
+713 691 0:59 /asound /proc/asound ro,nosuid,nodev,noexec,relatime - proc proc rw
+714 691 0:59 /bus /proc/bus ro,nosuid,nodev,noexec,relatime - proc proc rw
+715 691 0:59 /fs /proc/fs ro,nosuid,nodev,noexec,relatime - proc proc rw
+716 691 0:59 /irq /proc/irq ro,nosuid,nodev,noexec,relatime - proc proc rw
+717 691 0:59 /sys /proc/sys ro,nosuid,nodev,noexec,relatime - proc proc rw
+718 691 0:59 /sysrq-trigger /proc/sysrq-trigger ro,nosuid,nodev,noexec,relatime - proc proc rw
+547 692 0:66 /0 /dev/console rw,relatime - devpts devpts rw,gid=100004,mode=620,ptmxmode=666
 '''  # noqa: E501
 
 # The ID should match the above cgroup example.
 CONTAINER_ID = 'c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7'  # noqa: E501
 
-NON_DOCKER_CGROUP_EXAMPLE = b'''\
-12:perf_event:/
-11:hugetlb:/
-10:devices:/
-9:blkio:/
-8:rdma:/
-7:cpuset:/
-6:cpu,cpuacct:/
-5:freezer:/
-4:memory:/
-3:pids:/
-2:net_cls,net_prio:/
-1:name=systemd:/init.scope
-0::/init.scope
-'''
+NON_DOCKER_MOUNTINFO_EXAMPLE = b'''\
+21 27 0:19 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw
+22 27 0:20 / /proc rw,nosuid,nodev,noexec,relatime shared:14 - proc proc rw
+23 27 0:5 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=10219484k,nr_inodes=2554871,mode=755,inode64
+24 23 0:21 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
+25 27 0:22 / /run rw,nosuid,nodev,noexec,relatime shared:5 - tmpfs tmpfs rw,size=2047768k,mode=755,inode64
+27 1 8:2 / / rw,relatime shared:1 - ext4 /dev/sda2 rw,errors=remount-ro
+28 21 0:6 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
+29 23 0:24 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw,inode64
+30 25 0:25 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k,inode64
+'''  # noqa: E501
 
 
 def test_docker_fallback_user():
@@ -62,9 +195,46 @@ def test_docker_fallback_user():
         assert docker.get_docker_user() == ()
 
 
-def test_in_docker_no_file():
+@pytest.fixture(autouse=True)
+def _avoid_cache():
+    with mock.patch.object(
+            docker,
+            '_is_rootless',
+            docker._is_rootless.__wrapped__,
+    ):
+        yield
+
+
+@pytest.mark.parametrize(
+    'info_ret',
+    (
+        (0, b'{"SecurityOptions": ["name=rootless","name=cgroupns"]}', b''),
+        (0, b'{"host": {"security": {"rootless": true}}}', b''),
+    ),
+)
+def test_docker_user_rootless(info_ret):
+    with mock.patch.object(docker, 'cmd_output_b', return_value=info_ret):
+        assert docker.get_docker_user() == ()
+
+
+@pytest.mark.parametrize(
+    'info_ret',
+    (
+        (0, b'{"SecurityOptions": ["name=cgroupns"]}', b''),
+        (0, b'{"host": {"security": {"rootless": false}}}', b''),
+        (0, b'{"response_from_some_other_container_engine": true}', b''),
+        (0, b'{"SecurityOptions": null}', b''),
+        (1, b'', b''),
+    ),
+)
+def test_docker_user_non_rootless(info_ret):
+    with mock.patch.object(docker, 'cmd_output_b', return_value=info_ret):
+        assert docker.get_docker_user() != ()
+
+
+def test_container_id_no_file():
     with mock.patch.object(builtins, 'open', side_effect=FileNotFoundError):
-        assert docker._is_in_docker() is False
+        assert docker._get_container_id() is None
 
 
 def _mock_open(data):
@@ -76,34 +246,29 @@ def _mock_open(data):
     )
 
 
-def test_in_docker_docker_in_file():
-    with _mock_open(DOCKER_CGROUP_EXAMPLE):
-        assert docker._is_in_docker() is True
-
-
-def test_in_docker_docker_not_in_file():
-    with _mock_open(NON_DOCKER_CGROUP_EXAMPLE):
-        assert docker._is_in_docker() is False
+def test_container_id_not_in_file():
+    with _mock_open(NON_DOCKER_MOUNTINFO_EXAMPLE):
+        assert docker._get_container_id() is None
 
 
 def test_get_container_id():
-    with _mock_open(DOCKER_CGROUP_EXAMPLE):
+    with _mock_open(DOCKER_CGROUPS_V1_MOUNTINFO_EXAMPLE):
+        assert docker._get_container_id() == CONTAINER_ID
+    with _mock_open(DOCKER_CGROUPS_V2_MOUNTINFO_EXAMPLE):
+        assert docker._get_container_id() == CONTAINER_ID
+    with _mock_open(PODMAN_CGROUPS_V1_MOUNTINFO_EXAMPLE):
+        assert docker._get_container_id() == CONTAINER_ID
+    with _mock_open(PODMAN_CGROUPS_V2_MOUNTINFO_EXAMPLE):
         assert docker._get_container_id() == CONTAINER_ID
 
 
-def test_get_container_id_failure():
-    with _mock_open(b''), pytest.raises(RuntimeError):
-        docker._get_container_id()
-
-
 def test_get_docker_path_not_in_docker_returns_same():
-    with mock.patch.object(docker, '_is_in_docker', return_value=False):
+    with _mock_open(b''):
         assert docker._get_docker_path('abc') == 'abc'
 
 
 @pytest.fixture
 def in_docker():
-    with mock.patch.object(docker, '_is_in_docker', return_value=True):
     with mock.patch.object(
         docker, '_get_container_id', return_value=CONTAINER_ID,
     ):
@@ -195,3 +360,14 @@ CMD ["echo", "This is overwritten by the entry"']
 
     ret = run_language(tmp_path, docker, 'echo hello hello world')
     assert ret == (0, b'hello hello world\n')
+
+
+@xfailif_windows  # pragma: win32 no cover
+def test_docker_hook_mount_permissions(tmp_path):
+    dockerfile = '''\
+FROM ubuntu:22.04
+'''
+    tmp_path.joinpath('Dockerfile').write_text(dockerfile)
+
+    retcode, _ = run_language(tmp_path, docker, 'touch', ('README.md',))
+    assert retcode == 0

tests/languages/dotnet_test.py

@@ -27,7 +27,7 @@ def _csproj(tool_name):
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6</TargetFramework>
+    <TargetFramework>net8</TargetFramework>
     <PackAsTool>true</PackAsTool>
     <ToolCommandName>{tool_name}</ToolCommandName>
     <PackageOutputPath>./nupkg</PackageOutputPath>

tests/languages/golang_test.py

@@ -11,11 +11,13 @@ from pre_commit.commands.install_uninstall import install
 from pre_commit.envcontext import envcontext
 from pre_commit.languages import golang
 from pre_commit.store import _make_local_repo
+from pre_commit.util import CalledProcessError
 from pre_commit.util import cmd_output
 from testing.fixtures import add_config_to_repo
 from testing.fixtures import make_config_from_repo
 from testing.language_helpers import run_language
 from testing.util import cmd_output_mocked_pre_commit_home
+from testing.util import cwd
 from testing.util import git_commit
 
 
@@ -165,3 +167,70 @@ def test_during_commit_all(tmp_path, tempdir_factory, store, in_git_dir):
         fn=cmd_output_mocked_pre_commit_home,
         tempdir_factory=tempdir_factory,
     )
+
+
+def test_automatic_toolchain_switching(tmp_path):
+    go_mod = '''\
+module toolchain-version-test
+
+go 1.23.1
+'''
+    main_go = '''\
+package main
+
+func main() {}
+'''
+    tmp_path.joinpath('go.mod').write_text(go_mod)
+    mod_dir = tmp_path.joinpath('toolchain-version-test')
+    mod_dir.mkdir()
+    main_file = mod_dir.joinpath('main.go')
+    main_file.write_text(main_go)
+
+    with pytest.raises(CalledProcessError) as excinfo:
+        run_language(
+            path=tmp_path,
+            language=golang,
+            version='1.22.0',
+            exe='golang-version-test',
+        )
+
+    assert 'go.mod requires go >= 1.23.1' in excinfo.value.stderr.decode()
+
+
+def test_automatic_toolchain_switching_go_fmt(tmp_path, monkeypatch):
+    go_mod_hook = '''\
+module toolchain-version-test
+
+go 1.22.0
+'''
+    go_mod = '''\
+module toolchain-version-test
+
+go 1.23.1
+'''
+    main_go = '''\
+package main
+
+func main() {}
+'''
+    hook_dir = tmp_path.joinpath('hook')
+    hook_dir.mkdir()
+    hook_dir.joinpath('go.mod').write_text(go_mod_hook)
+
+    test_dir = tmp_path.joinpath('test')
+    test_dir.mkdir()
+    test_dir.joinpath('go.mod').write_text(go_mod)
+    main_file = test_dir.joinpath('main.go')
+    main_file.write_text(main_go)
+
+    with cwd(test_dir):
+        ret, out = run_language(
+            path=hook_dir,
+            language=golang,
+            version='1.22.0',
+            exe='go fmt',
+            file_args=(str(main_file),),
+        )
+
+        assert ret == 1
+        assert 'go.mod requires go >= 1.23.1' in out.decode()

tests/languages/julia_test.py

@@ -0,0 +1,111 @@
+from __future__ import annotations
+
+import os
+from unittest import mock
+
+from pre_commit.languages import julia
+from testing.language_helpers import run_language
+from testing.util import cwd
+
+
+def _make_hook(tmp_path, julia_code):
+    src_dir = tmp_path.joinpath('src')
+    src_dir.mkdir()
+    src_dir.joinpath('main.jl').write_text(julia_code)
+    tmp_path.joinpath('Project.toml').write_text(
+        '[deps]\n'
+        'Example = "7876af07-990d-54b4-ab0e-23690620f79a"\n',
+    )
+
+
+def test_julia_hook(tmp_path):
+    code = """
+    using Example
+    function main()
+        println("Hello, world!")
+    end
+    main()
+    """
+    _make_hook(tmp_path, code)
+    expected = (0, b'Hello, world!\n')
+    assert run_language(tmp_path, julia, 'src/main.jl') == expected
+
+
+def test_julia_hook_with_startup(tmp_path):
+    depot_path = tmp_path.joinpath('depot')
+    depot_path.joinpath('config').mkdir(parents=True)
+    startup = depot_path.joinpath('config', 'startup.jl')
+    startup.write_text('error("Startup file used!")\n')
+
+    depo_path_var = f'{depot_path}{os.pathsep}'
+    with mock.patch.dict(os.environ, {'JULIA_DEPOT_PATH': depo_path_var}):
+        test_julia_hook(tmp_path)
+
+
+def test_julia_hook_manifest(tmp_path):
+    code = """
+    using Example
+    println(pkgversion(Example))
+    """
+    _make_hook(tmp_path, code)
+
+    tmp_path.joinpath('Manifest.toml').write_text(
+        'manifest_format = "2.0"\n\n'
+        '[[deps.Example]]\n'
+        'git-tree-sha1 = "11820aa9c229fd3833d4bd69e5e75ef4e7273bf1"\n'
+        'uuid = "7876af07-990d-54b4-ab0e-23690620f79a"\n'
+        'version = "0.5.4"\n',
+    )
+    expected = (0, b'0.5.4\n')
+    assert run_language(tmp_path, julia, 'src/main.jl') == expected
+
+
+def test_julia_hook_args(tmp_path):
+    code = """
+    function main(argv)
+        foreach(println, argv)
+    end
+    main(ARGS)
+    """
+    _make_hook(tmp_path, code)
+    expected = (0, b'--arg1\n--arg2\n')
+    assert run_language(
+        tmp_path, julia, 'src/main.jl --arg1 --arg2',
+    ) == expected
+
+
+def test_julia_hook_additional_deps(tmp_path):
+    code = """
+    using TOML
+    function main()
+        project_file = Base.active_project()
+        dict = TOML.parsefile(project_file)
+        for (k, v) in dict["deps"]
+            println(k, " = ", v)
+        end
+    end
+    main()
+    """
+    _make_hook(tmp_path, code)
+    deps = ('TOML=fa267f1f-6049-4f14-aa54-33bafae1ed76',)
+    ret, out = run_language(tmp_path, julia, 'src/main.jl', deps=deps)
+    assert ret == 0
+    assert b'Example = 7876af07-990d-54b4-ab0e-23690620f79a' in out
+    assert b'TOML = fa267f1f-6049-4f14-aa54-33bafae1ed76' in out
+
+
+def test_julia_repo_local(tmp_path):
+    env_dir = tmp_path.joinpath('envdir')
+    env_dir.mkdir()
+    local_dir = tmp_path.joinpath('local')
+    local_dir.mkdir()
+    local_dir.joinpath('local.jl').write_text(
+        'using TOML; foreach(println, ARGS)',
+    )
+    with cwd(local_dir):
+        deps = ('TOML=fa267f1f-6049-4f14-aa54-33bafae1ed76',)
+        expected = (0, b'--local-arg1\n--local-arg2\n')
+        assert run_language(
+            env_dir, julia, 'local.jl --local-arg1 --local-arg2',
+            deps=deps, is_local=True,
+        ) == expected

tests/languages/python_test.py

@@ -10,8 +10,11 @@ import pre_commit.constants as C
 from pre_commit.envcontext import envcontext
 from pre_commit.languages import python
 from pre_commit.prefix import Prefix
+from pre_commit.store import _make_local_repo
+from pre_commit.util import cmd_output_b
 from pre_commit.util import make_executable
 from pre_commit.util import win_exe
+from testing.auto_namedtuple import auto_namedtuple
 from testing.language_helpers import run_language
 
 
@@ -34,6 +37,72 @@ def test_read_pyvenv_cfg_non_utf8(tmpdir):
     assert python._read_pyvenv_cfg(pyvenv_cfg) == expected
 
 
+def _get_default_version(
+        *,
+        impl: str,
+        exe: str,
+        found: set[str],
+        version: tuple[int, int],
+) -> str:
+    sys_exe = f'/fake/path/{exe}'
+    sys_impl = auto_namedtuple(name=impl)
+    sys_ver = auto_namedtuple(major=version[0], minor=version[1])
+
+    def find_exe(s):
+        if s in found:
+            return f'/fake/path/found/{exe}'
+        else:
+            return None
+
+    with (
+            mock.patch.object(sys, 'implementation', sys_impl),
+            mock.patch.object(sys, 'executable', sys_exe),
+            mock.patch.object(sys, 'version_info', sys_ver),
+            mock.patch.object(python, 'find_executable', find_exe),
+    ):
+        return python.get_default_version.__wrapped__()
+
+
+def test_default_version_sys_executable_found():
+    ret = _get_default_version(
+        impl='cpython',
+        exe='python3.12',
+        found={'python3.12'},
+        version=(3, 12),
+    )
+    assert ret == 'python3.12'
+
+
+def test_default_version_picks_specific_when_found():
+    ret = _get_default_version(
+        impl='cpython',
+        exe='python3',
+        found={'python3', 'python3.12'},
+        version=(3, 12),
+    )
+    assert ret == 'python3.12'
+
+
+def test_default_version_picks_pypy_versioned_exe():
+    ret = _get_default_version(
+        impl='pypy',
+        exe='python',
+        found={'pypy3.12', 'python3'},
+        version=(3, 12),
+    )
+    assert ret == 'pypy3.12'
+
+
+def test_default_version_picks_pypy_unversioned_exe():
+    ret = _get_default_version(
+        impl='pypy',
+        exe='python',
+        found={'pypy3', 'python3'},
+        version=(3, 12),
+    )
+    assert ret == 'pypy3'
+
+
 def test_norm_version_expanduser():
     home = os.path.expanduser('~')
     if sys.platform == 'win32':  # pragma: win32 cover
@@ -284,3 +353,15 @@ def test_python_hook_weird_setup_cfg(tmp_path):
 
     ret = run_language(tmp_path, python, 'socks', [os.devnull])
     assert ret == (0, f'[{os.devnull!r}]\nhello hello\n'.encode())
+
+
+def test_local_repo_with_other_artifacts(tmp_path):
+    cmd_output_b('git', 'init', tmp_path)
+    _make_local_repo(str(tmp_path))
+    # pretend a rust install also ran here
+    tmp_path.joinpath('target').mkdir()
+
+    ret, out = run_language(tmp_path, python, 'python --version')
+
+    assert ret == 0
+    assert out.startswith(b'Python ')

tests/languages/r_test.py

@@ -286,7 +286,7 @@ def test_health_check_without_version(prefix, installed_environment, version):
     prefix, env_dir = installed_environment
 
     # simulate old pre-commit install by unsetting the installed version
-    r._execute_vanilla_r_code_as_script(
+    r._execute_r_in_renv(
         f'renv::settings$r.version({version})',
         prefix=prefix, version=C.DEFAULT, cwd=env_dir,
     )

tests/languages/system_test.py

@@ -1,9 +0,0 @@
-from __future__ import annotations
-
-from pre_commit.languages import system
-from testing.language_helpers import run_language
-
-
-def test_system_language(tmp_path):
-    expected = (0, b'hello hello world\n')
-    assert run_language(tmp_path, system, 'echo hello hello world') == expected

tests/languages/unsupported_script_test.py

@@ -1,14 +1,14 @@
 from __future__ import annotations
 
-from pre_commit.languages import script
+from pre_commit.languages import unsupported_script
 from pre_commit.util import make_executable
 from testing.language_helpers import run_language
 
 
-def test_script_language(tmp_path):
+def test_unsupported_script_language(tmp_path):
     exe = tmp_path.joinpath('main')
     exe.write_text('#!/usr/bin/env bash\necho hello hello world\n')
     make_executable(exe)
 
     expected = (0, b'hello hello world\n')
-    assert run_language(tmp_path, script, 'main') == expected
+    assert run_language(tmp_path, unsupported_script, 'main') == expected

tests/languages/unsupported_test.py

@@ -0,0 +1,10 @@
+from __future__ import annotations
+
+from pre_commit.languages import unsupported
+from testing.language_helpers import run_language
+
+
+def test_unsupported_language(tmp_path):
+    expected = (0, b'hello hello world\n')
+    ret = run_language(tmp_path, unsupported, 'echo hello hello world')
+    assert ret == expected

tests/main_test.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import argparse
+import contextlib
 import os.path
 from unittest import mock
 
@@ -8,6 +9,7 @@ import pytest
 
 import pre_commit.constants as C
 from pre_commit import main
+from pre_commit.commands import hazmat
 from pre_commit.errors import FatalError
 from pre_commit.util import cmd_output
 from testing.auto_namedtuple import auto_namedtuple
@@ -97,11 +99,9 @@ CMDS = tuple(fn.replace('_', '-') for fn in FNS)
 
 @pytest.fixture
 def mock_commands():
-    mcks = {fn: mock.patch.object(main, fn).start() for fn in FNS}
-    ret = auto_namedtuple(**mcks)
-    yield ret
-    for mck in ret:
-        mck.stop()
+    with contextlib.ExitStack() as ctx:
+        mcks = {f: ctx.enter_context(mock.patch.object(main, f)) for f in FNS}
+        yield auto_namedtuple(**mcks)
 
 
 @pytest.fixture
@@ -158,6 +158,17 @@ def test_all_cmds(command, mock_commands, mock_store_dir):
     assert_only_one_mock_called(mock_commands)
 
 
+def test_hazmat(mock_store_dir):
+    with mock.patch.object(hazmat, 'impl') as mck:
+        main.main(('hazmat', 'cd', 'subdir', '--', 'cmd', '--', 'f1', 'f2'))
+    assert mck.call_count == 1
+    (arg,), dct = mck.call_args
+    assert dct == {}
+    assert arg.tool == 'cd'
+    assert arg.subdir == 'subdir'
+    assert arg.cmd == ['cmd', '--', 'f1', 'f2']
+
+
 def test_try_repo(mock_store_dir):
     with mock.patch.object(main, 'try_repo') as patch:
         main.main(('try-repo', '.'))

tests/repository_test.py

@@ -17,7 +17,7 @@ from pre_commit.clientlib import CONFIG_SCHEMA
 from pre_commit.clientlib import load_manifest
 from pre_commit.hook import Hook
 from pre_commit.languages import python
-from pre_commit.languages import system
+from pre_commit.languages import unsupported
 from pre_commit.prefix import Prefix
 from pre_commit.repository import _hook_installed
 from pre_commit.repository import all_hooks
@@ -80,13 +80,6 @@ def _test_hook_repo(
     assert out == expected
 
 
-def test_system_hook_with_spaces(tempdir_factory, store):
-    _test_hook_repo(
-        tempdir_factory, store, 'system_hook_with_spaces_repo',
-        'system-hook-with-spaces', [os.devnull], b'Hello World\n',
-    )
-
-
 def test_missing_executable(tempdir_factory, store):
     _test_hook_repo(
         tempdir_factory, store, 'not_found_exe',
@@ -431,7 +424,7 @@ def test_manifest_hooks(tempdir_factory, store):
         exclude_types=[],
         files='',
         id='bash_hook',
-        language='script',
+        language='unsupported_script',
         language_version='default',
         log_file='',
         minimum_pre_commit_version='0',
@@ -464,7 +457,7 @@ def test_non_installable_hook_error_for_language_version(store, caplog):
         'hooks': [{
             'id': 'system-hook',
             'name': 'system-hook',
-            'language': 'system',
+            'language': 'unsupported',
             'entry': 'python3 -c "import sys; print(sys.version)"',
             'language_version': 'python3.10',
         }],
@@ -476,7 +469,7 @@ def test_non_installable_hook_error_for_language_version(store, caplog):
     msg, = caplog.messages
     assert msg == (
         'The hook `system-hook` specifies `language_version` but is using '
-        'language `system` which does not install an environment.  '
+        'language `unsupported` which does not install an environment.  '
         'Perhaps you meant to use a specific language?'
     )
 
@@ -487,7 +480,7 @@ def test_non_installable_hook_error_for_additional_dependencies(store, caplog):
         'hooks': [{
             'id': 'system-hook',
             'name': 'system-hook',
-            'language': 'system',
+            'language': 'unsupported',
             'entry': 'python3 -c "import sys; print(sys.version)"',
             'additional_dependencies': ['astpretty'],
         }],
@@ -499,17 +492,28 @@ def test_non_installable_hook_error_for_additional_dependencies(store, caplog):
     msg, = caplog.messages
     assert msg == (
         'The hook `system-hook` specifies `additional_dependencies` but is '
-        'using language `system` which does not install an environment.  '
+        'using language `unsupported` which does not install an environment.  '
         'Perhaps you meant to use a specific language?'
     )
 
 
 def test_args_with_spaces_and_quotes(tmp_path):
     ret = run_language(
-        tmp_path, system,
+        tmp_path, unsupported,
         f"{shlex.quote(sys.executable)} -c 'import sys; print(sys.argv[1:])'",
         ('i have spaces', 'and"\'quotes', '$and !this'),
     )
 
     expected = b"['i have spaces', 'and\"\\'quotes', '$and !this']\n"
     assert ret == (0, expected)
+
+
+def test_hazmat(tmp_path):
+    ret = run_language(
+        tmp_path, unsupported,
+        f'pre-commit hazmat ignore-exit-code {shlex.quote(sys.executable)} '
+        f"-c 'import sys; raise SystemExit(sys.argv[1:])'",
+        ('f1', 'f2'),
+    )
+    expected = b"['f1', 'f2']\n"
+    assert ret == (0, expected)

tests/store_test.py

@@ -22,6 +22,17 @@ from testing.util import git_commit
 from testing.util import xfailif_windows
 
 
+def _select_all_configs(store: Store) -> list[str]:
+    with store.connect() as db:
+        rows = db.execute('SELECT * FROM configs').fetchall()
+        return [path for path, in rows]
+
+
+def _select_all_repos(store: Store) -> list[tuple[str, str, str]]:
+    with store.connect() as db:
+        return db.execute('SELECT repo, ref, path FROM repos').fetchall()
+
+
 def test_our_session_fixture_works():
     """There's a session fixture which makes `Store` invariantly raise to
     prevent writing to the home directory.
@@ -91,7 +102,7 @@ def test_clone(store, tempdir_factory, caplog):
     assert git.head_rev(ret) == rev
 
     # Assert there's an entry in the sqlite db for this
-    assert store.select_all_repos() == [(path, rev, ret)]
+    assert _select_all_repos(store) == [(path, rev, ret)]
 
 
 def test_warning_for_deprecated_stages_on_init(store, tempdir_factory, caplog):
@@ -217,7 +228,7 @@ def test_clone_shallow_failure_fallback_to_complete(
     assert git.head_rev(ret) == rev
 
     # Assert there's an entry in the sqlite db for this
-    assert store.select_all_repos() == [(path, rev, ret)]
+    assert _select_all_repos(store) == [(path, rev, ret)]
 
 
 def test_clone_tag_not_on_mainline(store, tempdir_factory):
@@ -265,7 +276,7 @@ def test_mark_config_as_used(store, tmpdir):
     with tmpdir.as_cwd():
         f = tmpdir.join('f').ensure()
         store.mark_config_used('f')
-        assert store.select_all_configs() == [f.strpath]
+        assert _select_all_configs(store) == [f.strpath]
 
 
 def test_mark_config_as_used_idempotent(store, tmpdir):
@@ -275,21 +286,12 @@ def test_mark_config_as_used_idempotent(store, tmpdir):
 
 def test_mark_config_as_used_does_not_exist(store):
     store.mark_config_used('f')
-    assert store.select_all_configs() == []
-
-
-def _simulate_pre_1_14_0(store):
-    with store.connect() as db:
-        db.executescript('DROP TABLE configs')
-
-
-def test_select_all_configs_roll_forward(store):
-    _simulate_pre_1_14_0(store)
-    assert store.select_all_configs() == []
+    assert _select_all_configs(store) == []
 
 
 def test_mark_config_as_used_roll_forward(store, tmpdir):
-    _simulate_pre_1_14_0(store)
+    with store.connect() as db:  # simulate pre-1.14.0
+        db.executescript('DROP TABLE configs')
     test_mark_config_as_used(store, tmpdir)
 
 
@@ -314,7 +316,7 @@ def test_mark_config_as_used_readonly(tmpdir):
     assert store.readonly
     # should be skipped due to readonly
     store.mark_config_used(str(cfg))
-    assert store.select_all_configs() == []
+    assert _select_all_configs(store) == []
 
 
 def test_clone_with_recursive_submodules(store, tmp_path):