The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.
sfrotz is an SDL interface version of frotz, the Z-machine interpreter which plays both Infocom games and newer games targeting the Z-machine. Unlike the curses interface version of Frotz, SDL Frotz can handle the graphics in Z-machine version 6 games.