This repository contains basic set of shared libraries and so-called SCR agents used for reading and writing configuration files and some even for executing commands on the system.
See the generated yardoc documentation at rubydoc.info.
It contains some general overview of yast2 parts:
To get the source code, clone the GitHub repository:
$ git clone https://github.com/yast/yast-yast2.git
If you want to contribute into the project you can fork the repository and clone your fork.
This module is developed as part of YaST. See the development documentation.
If you have any question, feel free to ask at the development mailing list or at the #yast IRC channel on libera.chat.