libarchive13 dependencies

I'm trying to upgrade debian stable with aptitude, but it wants to remove 30 other packages
The problem seems to be in updating 'libarchive13'.
How to resolve it?
Thanks.

edit: this seems to be the same problem:
https://lists.debian.org/debian-user.../msg00618.html

Originally Posted by qrange I'm trying to upgrade debian stable with aptitude, but it wants to remove 30 other packages The problem seems to be in updating 'libarchive13'. How to resolve it?

Hi...

Can you post the exact error message you're receiving? What dependencies and versions are needed?

Regards...

umm, I forgot to admit that the 'unforgivable' had been done: downgraded from testing to stable...

libarchive13 depends on libnettle4 which isn't installed, and would break a bunch of things.