More like a QML theme. You don't need a library at all. And KDE's breeze theme and Plasma animations in Plasma 2 are really close to Material as is. And I kno

More like a QML theme. You don't need a library at all. And KDE's breeze theme and Plasma animations in Plasma 2 are really close to Material as is. And I know of at least a few themes on kde-look that are already mostly material.