Hi,
in jessie-backports nginx 1.10.3-1+deb9u1~bpo8+1 depends on libssl1.1,
which does not exist in jessie-bpo.
dist-upgrade will remove nginx after that then.
--
/*
Mit freundlichem Gruß / With kind regards,
Patrick Matthäi
GNU/Linux Debian Developer
Blog: http://www.linux-dev.org/
E-Mail: pmatthaei@debian.org
patrick@linux-dev.org
*/