This ttf-xfree86-nonfree package is transitional dummy package, it can be safely removed.

DXX-Rebirth is a Source Port of the Descent & Descent ][ Engines and provides classical Gameplay combined with OpenGL graphics and effects, a bunch of improvements and new features.

CMake is used to control the software compilation process using simple platform and compiler independent configuration files. CMake generates native makefiles and workspaces that can be used in the compiler environment of your choice. CMake is quite sophisticated: it is possible to support complex environments requiring system configuration, pre-processor generation, code generation, and template instantiation.

MariaDB is a fast, stable and true multi-user, multi-threaded SQL database server. SQL (Structured Query Language) is the most popular database query language in the world. The main goals of MariaDB are speed, robustness and ease of use.

fprintd is a D-Bus daemon that offers libfprint functionality over the D-Bus interprocess communication bus. By adding this daemon layer above libfprint, various problems related to multiple applications simultaneously competing for fingerprint readers get solved.

haveged is a userspace entropy daemon which is not dependent upon the standard mechanisms for harvesting randomness for the system entropy pool. This is important in systems with high entropy needs or limited user interaction (e.g. headless servers).