setup_venv.sh — create a project-local Python .venv using uv and add .venv/ to .gitignore

setup_venv.sh

#!/usr/bin/env bash
set -euo pipefail

VENV_DIR=".venv"

if ! command -v uv >/dev/null 2>&1; then
  echo "Error: uv is not installed. Install with: brew install uv"
  exit 1
fi

# Create venv if missing
if [ ! -d "$VENV_DIR" ]; then
  echo "Creating Python virtual environment in $VENV_DIR"
  uv venv
else
  echo "Virtual environment already exists in $VENV_DIR"
fi

# Ensure .gitignore excludes it
if [ ! -f .gitignore ] || ! grep -qE '(^|/)\.venv/?$' .gitignore; then
  echo ".venv/" >> .gitignore
  echo "Added .venv/ to .gitignore"
fi

echo "Done. Activate with: source $VENV_DIR/bin/activate"