SyntaxWarning when installing exe package

[imrsaleh]

Environment Details

• pynsist version: 2.8 (Latest)
• OS: Windows 11
• Python Version: Python 3.14.6

Describe the bug

When running an installed .exe package generated by pynsist, a SyntaxWarning is triggered regarding an invalid escape sequence \A in _system_path.py.

Warning Output

_system_path.py:68: SyntaxWarning: invalid escape sequence '\A'   remove_from_system_path(r'C:\Anaconda')

[takluyver]

Thanks! #272 should fix this.