Version 2.2.3 is available upstream. Please consider updating! It seems that version 2.2.3 is available upstream, while the latest version in the Gentoo tree is 2.0.16. This information is provided from Release-Monitoring, so fix association issues there.
Conan is a portable package manager, intended for C and C++
developers, but it is able to manage builds from source,
dependencies, and precompiled binaries for any language.