SUMMARY Nuspell, an alternative Hunspell implementation is not recognized. Enchant, an officially supported spellcheck library is not recognized. STEPS TO REPRODUCE 1. Install nuspell, enchant and hunspell-en_us (do not install hunspell) 2. Launch Kate 3. See that no backend is available Operating System: Garuda Linux KDE Plasma Version: 5.27.9 KDE Frameworks Version: 5.111.0 Qt Version: 5.15.11 Kernel Version: 6.5.8-zen1-1-zen (64-bit) Graphics Platform: Wayland Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz Memory: 7,4 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 520 Manufacturer: HP Product Name: HP EliteBook 820 G3 ADDITIONAL INFORMATION This doc specifically mentions Enchant and nuspell should work everywhere, where hunspell works https://nuspell.github.io/
The doc page I am referencing to: https://docs.kde.org/stable5/en/khelpcenter/fundamentals/spellcheck.html
enchant hasn't been supported in sonnet for years. The only issue here is that the documentation is outdated.
A possibly relevant merge request was started @ https://invent.kde.org/system/khelpcenter/-/merge_requests/36
Git commit b2fa3dd7d801969d5cacb6afb6dd2ae0db91989e by Antonio Rojas. Committed on 26/10/2023 at 13:12. Pushed by ltoscano into branch 'master'. Drop mention to unsupported spell checkers enchant support was dropped years ago M +1 -2 doc/fundamentals/tasks.docbook https://invent.kde.org/system/khelpcenter/-/commit/b2fa3dd7d801969d5cacb6afb6dd2ae0db91989e