Installation fails on Windows with Python 3.12 - missing import os and incorrect DLL naming

[christelann...@gmail.com]

Dear all,
Not sure how I should mention an error that I encountered when I was installing Umikuji. But I can tell the following (not sure if this is something Annif should change or the developer of Umikuji but may be someone can help on how to approach this - I am "just" a historian ;-) )

Description: Installing omikuji 0.4.1 on Windows with Python 3.12 fails due to two issues:

1. setup.py uses os.environ but does not import os, causing NameError: name 'os' is not defined
2. After manually fixing this, the built library file is named _libomikuji__libNone instead of _libomikuji__lib.dll, causing an OSError when loading

Environment:

• Windows 11
• Python 3.12.10
• setuptools 80.x
• Rust installed via rustup

Workaround:

1. Download and extract omikuji source
2. Add import os to the top of setup.py
3. Build with pip install . --no-build-isolation
4. Rename _libomikuji__libNone to _libomikuji__lib.dll in site-packages/omikuji/
5. Edit _libomikuji.py to reference the correct filename

Best,
Annemieke Romein