A graphical front-end for command line emulators that hides the underlying operating system and is intended to be controlled with a joystick or gamepad.
While it is optional to use either swresample or avresample,
Debian (sbuild -d bullseye) defaults to libswresample-dev even if libavresample-dev is in the control file.
Include libxrandr-dev Change libavresample-dev ---> libswresample-dev