dep composed on 2018-05-01 10:40 (UTC-0400):
Nick Koretsky wrote:
deb http://mirror.xcer.cz/trinity-sb stretch deps-r14 main-r14
Looks exactly same as here.
still no joy. changed the line, did apt-get update, but sudo aptitude install tde-trinity produces: Couldn't find any package whose name is "tde-trinity", but there are 2 packages which contain "tde-trinity" in their name: compiz-tde-trinity-dbgsym compiz-tde-trinity"
Is this Stretch an upgrade from *buntu? If yes, try logging in as root and skipping use of sudo and -get or aptitude for installing. Apt has some logical improvements over apt-get.
Maybe start over using apt clean all before apt update.