I'm using Raspbian Jessie but there are a few packages I want that aren't available (but are in Debian Stretch repos). I want to temporarily use the Stretch repo to install them (and any otherwise-unsatisfied dependencies) but without making anything else come from there in the future.
I understand things might not work; etc.; I'm just trying something out on a throwaway install 🙂
I tried rigging some files (based on this answer) but I got this.. not sure a) how to fix it and b) whether I'm doing things the right way!
W: GPG error: http://ftp.uk.debian.org stretch InRelease: The
following signatures couldn't be verified because the public
key is not available:
NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
Best Answer
As backports has
letsencrypt
, I recommend usingjessie-backports
as it brings less new/packages dependencies than drinking directly from stretch.To use
Jessie backports
and installletsencrypt
from it:Add to
/etc/apt/sources.list
:The run:
As for installing the key, I confirm you can do:
and also with the key 7638D0442B90D010
And finally to install
letsencrypt
: