[BUG] Extension bl_ext.user_default.fabex is incompatible. (This Python version (3.13) isn't compatible with (3.11))

[jamincollins]

Describe the Bug
Extension bl_ext.user_default.fabex is incompatible. (This Python version (3.13) isn't compatible with (3.11))

To Reproduce

1. Install Arch Linux and Blender
2. Grab latest blendercam release
3. Try to install it

Expected Behavior
The blendercam release installs.

Screenshots

System Information:

• OS: Arch Linux
• Blender Version: 4.3.2
• Addon Version: 1.0.61

Error Message:
Extension bl_ext.user_default.fabex is incompatible. (This Python version (3.13) isn't compatible with (3.11))

Additional context
None

[blackbookpro]

I have the exact same problem with a different OS:

• OS: Fedora Asahi Remix (aarch64)
• Blender: 4.3.2
• FabexCNC: 1.0.65

Error:
Extension bl_ext.user_default.fabex is incompatible (This Python version (3.13) isn't compatible with (3.11))

Please help!!!

[blackbookpro]

Ok, after some research i have found a solution that seems to work!
there is a similar issue with CAD Sketcher and there somebody wrote a script to rename all the .whl files from 311 to 313 and to update the manifest.toml file too.

I adjusted that script and could now successfully install FabexCNC:

Just save it as modify_zip.py for example and run it with python3 in the folder where you have the fabexcnc.zip:

import tempfile
import zipfile
from pathlib import Path

# Open the source ZIP file
zip_path = Path("./fabexcnc.zip")
with zipfile.ZipFile(zip_path, "r") as zip_ref:
    # Create a temporary directory
    with tempfile.TemporaryDirectory() as tmp_dir:
        tmp_path = Path(tmp_dir)
        zip_ref.extractall(tmp_path)
        
        # Rename .whl files
        for whl in tmp_path.glob("**/*.whl"):
            new_name = whl.name.replace("cp311", "cp313")
            print(f"Renaming {whl.name} to {new_name}")
            whl.rename(whl.parent / new_name)
        
        # Update the manifest before creating the new ZIP
        manifest = tmp_path / "cam" / "blender_manifest.toml"
        if manifest.exists():
            manifest_str = manifest.read_text()
            manifest_str = manifest_str.replace("cp311", "cp313")
            manifest.write_text(manifest_str)
        
        # Create the new ZIP file
        new_zip_path = Path("./fabexcnc-py313.zip")
        with zipfile.ZipFile(new_zip_path, "w") as new_zip:
            for file in tmp_path.rglob("*"):
                if file.is_file():  # Ensure it's a file
                    arc_name = str(file.relative_to(tmp_path))
                    new_zip.write(file, arc_name)

print("New ZIP archive created successfully.")