The build fails: -- Could NOT find Qt6OpenGL (missing: Qt6OpenGL_DIR) CMake Error at CMakeLists.txt:247 (find_package): Found package configuration file: /usr/lib64/cmake/Qt6/Qt6Config.cmake but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT FOUND. Reason given by package: Failed to find required Qt component "OpenGL". Expected Config file at "/usr/lib64/cmake/Qt6OpenGL/Qt6OpenGLConfig.cmake" does NOT exist The ebuild seems only adapted for Qt5, so it looks like a CMake flag has to be set to choose Qt5 even if Qt6 is installed.
Fixed, please try now.
Works, thanks!