libgsystem is intended to be used as a git external for components that depend on GLib, but accept a hard dependency on things which are difficult to do in GLib itself. For example, the local-alloc API depends on GCC/clang. It will also be a useful place to evolve new APIs (e.g. logging) before their eventual inclusion in GLib (if ever). There's no bugzilla component currently, please mail patches to: walters@verbum.org