Fix running pre-commit on Windows (#8095)

.pre-commit-config.yaml

@@ -53,6 +53,6 @@ repos:
     hooks:
       - id: pylint
         name: pylint
-        entry: script/run-in-env.sh pylint
-        language: script
+        entry: python script/run-in-env pylint
+        language: system
         types: [python]

script/run-in-env

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+import os
+from pathlib import Path
+import subprocess
+import sys
+
+
+def find_and_activate_virtualenv():
+    try:
+        # Get the top-level directory of the git repository
+        my_path = subprocess.check_output(
+            ["git", "rev-parse", "--show-toplevel"], text=True
+        ).strip()
+    except subprocess.CalledProcessError:
+        print(
+            "Error: Not a git repository or unable to determine the top-level directory.",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    # Check for virtual environments
+    for venv in ["venv", ".venv", "."]:
+        activate_path = (
+            Path(my_path)
+            / venv
+            / ("Scripts" if os.name == "nt" else "bin")
+            / "activate"
+        )
+        if activate_path.exists():
+            # Activate the virtual environment by updating PATH
+            env = os.environ.copy()
+            venv_bin_dir = activate_path.parent
+            env["PATH"] = f"{venv_bin_dir}{os.pathsep}{env['PATH']}"
+            env["VIRTUAL_ENV"] = str(venv_bin_dir.parent)
+            print(f"Activated virtual environment: {venv_bin_dir.parent}")
+
+            # Execute the remaining arguments in the new environment
+            if len(sys.argv) > 1:
+                subprocess.run(sys.argv[1:], env=env, check=False)
+            else:
+                print(
+                    "No command provided to run in the virtual environment.",
+                    file=sys.stderr,
+                )
+            return
+
+    print("No virtual environment found.", file=sys.stderr)
+    sys.exit(1)
+
+
+if __name__ == "__main__":
+    find_and_activate_virtualenv()

script/run-in-env.sh

@@ -1,13 +0,0 @@
-#!/usr/bin/env sh
-set -eu
-
-my_path=$(git rev-parse --show-toplevel)
-
-for venv in venv .venv .; do
-  if [ -f "${my_path}/${venv}/bin/activate" ]; then
-    . "${my_path}/${venv}/bin/activate"
-    break
-  fi
-done
-
-exec "$@"