From 83e05e607e6b8cfde97c05e067d156be09a298a9 Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Wed, 25 Jan 2023 14:03:39 -0500
Subject: [PATCH 1/2] ensure coursier hooks are available offline after install

---
 pre_commit/languages/coursier.py | 45 ++++++++++++++++----------------
 1 file changed, 22 insertions(+), 23 deletions(-)

diff --git a/pre_commit/languages/coursier.py b/pre_commit/languages/coursier.py
index 69c877d32..60757588d 100644
--- a/pre_commit/languages/coursier.py
+++ b/pre_commit/languages/coursier.py
@@ -28,45 +28,44 @@ def install_environment(
     helpers.assert_version_default('coursier', version)
 
     # Support both possible executable names (either "cs" or "coursier")
-    executable = find_executable('cs') or find_executable('coursier')
-    if executable is None:
+    cs = find_executable('cs') or find_executable('coursier')
+    if cs is None:
         raise AssertionError(
             'pre-commit requires system-installed "cs" or "coursier" '
             'executables in the application search path',
         )
 
     envdir = helpers.environment_dir(prefix, ENVIRONMENT_DIR, version)
-    channel = prefix.path('.pre-commit-channel')
-    if os.path.isdir(channel):
-        for app_descriptor in os.listdir(channel):
-            _, app_file = os.path.split(app_descriptor)
-            app, _ = os.path.splitext(app_file)
-            helpers.run_setup_cmd(
-                prefix,
-                (
-                    executable,
-                    'install',
+
+    def _install(*opts: str) -> None:
+        assert cs is not None
+        helpers.run_setup_cmd(prefix, (cs, 'fetch', *opts))
+        helpers.run_setup_cmd(prefix, (cs, 'install', '--dir', envdir, *opts))
+
+    with in_env(prefix, version):
+        channel = prefix.path('.pre-commit-channel')
+        if os.path.isdir(channel):
+            for app_descriptor in os.listdir(channel):
+                _, app_file = os.path.split(app_descriptor)
+                app, _ = os.path.splitext(app_file)
+                _install(
                     '--default-channels=false',
                     '--channel', channel,
-                    '--dir', envdir,
                     app,
-                ),
+                )
+        elif not additional_dependencies:
+            raise FatalError(
+                'expected .pre-commit-channel dir or additional_dependencies',
             )
-    elif not additional_dependencies:
-        raise FatalError(
-            'expected .pre-commit-channel dir or additional_dependencies',
-        )
 
-    if additional_dependencies:
-        install_cmd = (
-            executable, 'install', '--dir', envdir, *additional_dependencies,
-        )
-        helpers.run_setup_cmd(prefix, install_cmd)
+        if additional_dependencies:
+            _install(*additional_dependencies)
 
 
 def get_env_patch(target_dir: str) -> PatchesT:
     return (
         ('PATH', (target_dir, os.pathsep, Var('PATH'))),
+        ('COURSIER_CACHE', os.path.join(target_dir, '.cs-cache')),
     )
 
 

From dd8e717ed6022209a2b0cecf5c75460eb60e548e Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Thu, 26 Jan 2023 11:09:17 -0500
Subject: [PATCH 2/2] v3.0.1

---
 CHANGELOG.md | 7 +++++++
 setup.cfg    | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59e0e202b..d55ff7325 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+3.0.1 - 2023-01-26
+==================
+
+### Fixes
+- Ensure coursier hooks are available offline after install.
+    - #2723 PR by @asottile.
+
 3.0.0 - 2023-01-23
 ==================
 
diff --git a/setup.cfg b/setup.cfg
index 929f4c327..1dbace59c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = pre_commit
-version = 3.0.0
+version = 3.0.1
 description = A framework for managing and maintaining multi-language pre-commit hooks.
 long_description = file: README.md
 long_description_content_type = text/markdown