Source licensed in compliance with the [[ https://www.debian.org/social_contract#guidelines |DFSG ]].
NB! This may imply compliance with [[ https://www.gnu.org/philosophy/free-sw.html | FSF ]] too, but not in all cases.
Should be in sync with [[ https://bugs.debian.org/cgi-bin/pkgreport.cgi?users=debbugs@pureos.net;tag=nonfree-license | corresponding bugs in Debian ]], where possible.