[boost] boost/asio/awaitable.hpp including <experimental/coroutine>

Hi, i've been trying to get the coroutine chat example to work, but it seems that in 1.72 and 1.71 boost/asio/awaitable.hpp does not compile when BOOST_ASIO_HAS_CO_AWAIT has been defined. Is there something i overlooked (i've been away from Linux development for some years...) or is boost really broken with this define? Which version should i try, or is there any sense in trying to fix this myself? Best regards papsolo