Didn't see any mention of this little goodie, so enjoy:

In DistroWatch Weekly, Issue 632, 19 October 2015, in the News section
"Improving package searches", the editors dropped this tidbit:

" On a related note, we receive a lot of queries asking if there is a
way to find distributions which do not include a specific package,
particularly the systemd software. To find distributions which do not
include a package, visit our Search page, select the package to be
avoided and select Not in latest release from the drop-down box on the
right. Then click Submit Query. A list of distributions which do not
feature the package will be provided. "