{
  pkgs ? import <nixpkgs> { },
}:

pkgs.mkShell {
  packages =
    [
      # Python with development packages
      (pkgs.python3.withPackages (
        ps:
        builtins.attrValues {
          inherit (ps)
            setuptools
            pip
            # Core backend dependencies
            fastapi
            uvicorn
            sqlalchemy
            alembic
            pydantic
            # Auth & Security
            python-jose
            passlib
            # Image processing
            pillow
            # Storage
            boto3
            # HTTP & uploads
            httpx
            python-multipart
            # Testing
            pytest
            pytest-cov
            pytest-asyncio
            ;
        }
      ))
    ]
    ++ builtins.attrValues {
      inherit (pkgs)
        # Python tools
        uv
        ruff
        # Database
        postgresql
        # Frontend
        nodejs
        # Image processing
        imagemagick
        # Version control
        git
        # Development tools
        direnv
        ;
    };
  
  buildInputs = [ ];
  
  shellHook = ''
    echo "🚀 Reference Board Viewer Development Environment"
    echo "   Python: $(python --version)"
    echo "   Node.js: $(node --version)"
    echo "   PostgreSQL: $(psql --version | head -n1)"
    echo ""
    echo "📚 Quick Commands:"
    echo "   Backend:  cd backend && uvicorn app.main:app --reload"
    echo "   Frontend: cd frontend && npm run dev"
    echo "   Tests:    cd backend && pytest --cov"
    echo ""
  '';
}