[Darkskiez]

See also https://codesearch.debian.net/ - https://github.com/Debian/dcs for a similar project that may fit your needs better. I've not compared them both, but I use dcs frequently

[boyter]

The blog posts about it are great too. This one https://michael.stapelberg.ch/posts/2019-09-29-dcs-positiona... in particular.