Hi, on buster, I'm having a problem using the wiki instructions https://wiki.debian.org/SimpleBackportCreation specifically the 3 steps under the subheading "Add source package entries for the testing distribution" Although in my case I am seeking to obtain the source package from unstable, not testing.
Per step 1, I add a temporary unstable deb-src line so that my /etc/apt/sources.list becomes (comments removed, see last line): $ cat /etc/apt/sources.list deb http://approx:9999/debian/ buster main non-free contrib deb http://security.debian.org/debian-security buster/updates main contrib non-free deb http://approx:9999/debian/ buster-updates main contrib non-free deb http://approx:9999/debian/ buster-backports main contrib non-free deb-src http://approx:9999/debian/ unstable main contrib non-free $ Per step 2, I run apt update: # apt update Hit:1 http://approx:9999/debian buster InRelease Hit:2 http://security.debian.org/debian-security buster/updates InRelease Hit:3 http://approx:9999/debian buster-updates InRelease Hit:4 http://approx:9999/debian buster-backports InRelease Get:5 http://approx:9999/debian unstable InRelease [146 kB] Get:6 http://approx:9999/debian unstable/contrib Sources [47.3 kB] Get:7 http://approx:9999/debian unstable/non-free Sources [84.9 kB] Get:8 http://approx:9999/debian unstable/main Sources [8,620 kB] Fetched 8,899 kB in 7s (1,187 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. # But step 3 fails: $ apt source -t unstable cgdb Reading package lists... Done E: The value 'unstable' is invalid for APT::Default-Release as such a release is not available in the sources E: Unable to find a source package for $ apt source -t testing cgdb Reading package lists... Done E: The value 'testing' is invalid for APT::Default-Release as such a release is not available in the sources E: Unable to find a source package for $ What is wrong, and how do I fix it?
