cluttermm provides gtkmm-like C++ bindings for the Clutter API. It hasn’t had much attention over the last few years, while the Clutter API has moved on considerably.
I don’t have a great interest in Clutter, though I’d like cluttermm to be ready to inspire gtkmm if any future GTK+ 4 absorbs Clutter. However, Ian Martin has recently put lots of work into updating cluttermm and I’ve been helping him to get his changes upstream and I released some cluttermm-1.17.x tarballs. It’s in the cluttermm-1-18 branch.
This has involved deprecating a huge amount of API and adding (hopefully all of) the API that replaces it. I’ve already removed all this API in the parallel-installable cluttermm git master branch but I have some linker errors that stop that from building, and I’m not going to spend time on it until there are some releases from clutter’s git master (clutter-2.0).
This also means that the cluttermm-tutorial is even more wildly out of date. I’m not likely to spend my free time updating it.
I don’t want to be cluttermm maintainer again, but I didn’t want Ian’s work to be wasted and I hope he wants to keep at it.