Meta-CVS is version control system created around CVS. It retains most of the features of CVS while adding support for first class directory structure versioning, storage of symbolic links, and versioning of execute permissions and user-defined properties. Meta-CVS greatly simplifies branching and merging by keeping track of what is merged where. It records file types and automatically assigns a CVS keyword expansion mode to newly added files whose suffixes match previously recorded types. Meta-CVS also has an importing feature that automatically figures out renames and moves, making it possible to easily keep up with patches from multiple sources in spite of directory structure changes.
TXR is a new data munging language. TXR's special pattern language provides template-based matching of entire documents or large sections of documents. It also contains a language for functional and imperative programming. It is written in C and takes the form of a utility that is portable to Unix-like platforms and Windows.
systemd is a pile of shit written by obvious "B grade" C programming talent. I
know; I have had to work with the internals.
Stay away from any distro based on systemd, if you can help it at all.
One of the biggest piles of shit ever written in the entire history of computing, that is a liability to every project that relies on it, and a big cancerous wart on the freeware movement.