So, what's going to happen?

The discussion dwindled down without any clear path forward, it seems.

IMO the most reasonable thing to do at the moment would be:

1. start working on rustifying `apt-ftparchive` and `apt-extracttemplates`;

2. split `apt-utils` away from APT's source package (or introduce a <norust> build profile), so that APT's main binary can still be compiled using only C/C++;

3. do not rustify APT itself until some sort of consensus is reached.