[pkg-config --cflags -- opus opus opus opus opusfile opusfile] Package opusfile was not found in the pkg-config search path. Perhaps you should add the directory containing `opusfile.pc' to the PKG_CONFIG_PATH environment variable Package 'opusfile', required by 'virtual:world', not found Package 'opusfile', required by 'virtual:world', not found $ sudo apt install libopus-dev libopusfile-dev 16