Hi all, I’ve drafted a phep proposal for the new finalization mechanism, so we can discuss it here! https://github.com/pharo-project/pheps/pull/14 <https://github.com/pharo-project/pheps/pull/14> A proposal describing a new finalization mechanism for Pharo with the following properties: • API independent from its implementation • Avoids memory leaks This document describes both a finalization API as a Pharo library and an efficient virtual machine implementation through Ephemerons. Cheers, G