SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** In recent times, some fonts added font variations to allow to switch font weight, width, oblique angle, optical size, and so on. With this support it’s possible to allow designers to make use of them for texts if they are using variable fonts. CSS also have font-variation-settings property for this. STEPS TO REPRODUCE (No way to reproduce, Krita have no interfaces for this) OBSERVED RESULT N/A EXPECTED RESULT N/A SOFTWARE/OS VERSIONS Windows: 10 macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION Documentations at MDN Web Docs: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Fonts/Variable_Fonts_Guide
Feature requests should be marked as "wishlist", not "normal", and please also read https://docs.krita.org/en/untranslatable_pages/new_features.html before flooding us with things-to-do.
Inkscape is already got support for font variation from 1.0 release. https://inkscape.org/news/2020/05/04/introducing-inkscape-10/