Add support for the Qt 6 application and UI framework

Packages describing “qt6” as local USE flag

Package “qt6” Flag Description
media-libs/OpenImageIO Build iv with Qt6
www-client/qutebrowser Use Qt6 that provides a newer Chromium version
sci-libs/vtk Use Qt6 packages instead of Qt5
net-news/rssguard Build with Qt6 support instead of the default Qt5
dev-libs/quazip Build with Qt6 support
net-analyzer/wireshark Build with Qt6 support instead of the default Qt5 for GUI support
games-action/prismlauncher Build with Qt6 support instead of the default Qt5
dev-libs/qhotkey Use Qt6 dependencies
media-libs/openimageio Build iv with Qt6
net-im/telegram-desktop Build with Qt6 support

All packages providing a “qt6” USE flag (49)