Hi, I get it from here: launchpad.net/~mutlaqja/+archive/ubuntu/...field.series_filter= for my case i took the : libqhy - 21.2.11+unstable~202102160314~ubuntu18.04.1 inside this lib in the file CMakeLists.txt we can read:
# QHY SDK 21.2.11 set(LIBQHY_VERSION "20.2.11") set(LIBQHY_SOVERSION "20")