PSA v1.8.3 and v1.9.2 fail to load in Blender 4.2 with ImportError: cannot import name 'tuple_to_str' from 'physical-starlight-atmosphere.helpers'

[mattrenderedai]

Describe the bug
The root cause is that the helpers.py file contains Markdown code fences (python ... ) around the Python code, making it syntactically invalid. When init.py attempts to import tuple_to_str from helpers.py, Python cannot parse the file due to these Markdown formatting markers.

Expected behavior The addon should load successfully and tuple_to_str should be importable from helpers.py.

General information
Blender version: 4.2.0 (hash a51f293548ad built 2024-07-16 06:27:02)
Addon version: 1.8.3 and 1.9.2 (both affected)
Engine: Cycles
Operating System: Linux
Other info that could be useful: Python 3.11 (Blender's bundled Python), Python 3.13 (system)

To Reproduce
Download PSA v1.8.3 or v1.9.2 from Physical Addons
Install the addon in Blender 4.2: Edit > Preferences > Add-ons > Install > Select the .zip file
Enable the addon by checking the checkbox next to "Physical Starlight and Atmosphere"
Observe the error in the console: ImportError: cannot import name 'tuple_to_str' from 'physical-starlight-atmosphere.helpers'

[github-actions]

Hi 👋
Thanks for reaching out!

This issue tracker is managed internally by the Physical Addons team.
Please post your questions or reports in our Discord support channel.

We'll move verified reports here once they’re reproducible or ready for development.

[mattrenderedai]

The file should contain only valid Python code without the Markdown formatting markers.

Workaround

1. Extract the addon .zip file
2. Edit physical-starlight-atmosphere/helpers.py
3. Remove the opening ```python line and closing ``` line
4. Save the file (it should now start directly with # ##### BEGIN GPL LICENSE BLOCK #####)
5. Re-zip the folder and install the modified version

Fix needed
Remove the Markdown code fences from helpers.py in the distributed addon package. The file should contain only valid Python code.

Impact
PSA v1.8.3 and v1.9.2 cannot be used in Blender 4.2 due to this packaging error. Users must manually patch the addon to use these versions.