We've spent some time this morning to write up our proposal in some detail.
Weakref cycles were discussed at length, and there was a lot of sighing.
Eric and Leo from the swt team came by and we discussed their problems with custom fixed containers, accessibility and text views with them.
Philip demonstrated his effort to make dunfell visualize main context related events from multiple threads. This is using systemtap to get trace data out of glib.
The other Philip demonstrated some of the custom containers that endless uses for responsive layout. Matthias agreed that the overflow box is a good candidate for a GTK+ addition, with some generalization.