You had to locate its source code, then compile and link that source into an executable binary file.
The entire system configuration was stored in one single XML text file to keep things transparent.
Version 5.5, featuring the KDE Plasma 5.9.5 desktop, is based on Kubuntu 17.04, which is a distribution supported for nine months only (until January 2018).
From the release notes: "Ultimate Edition 5.5 was built from the Ubuntu 17.04 'Zesty Zapus' tree, using a combination of Tmosb (Thee Mahn's Operating System Builder) and work by hand.
Source packages, which consist of a file describing the source package (including the names of the following files), a file that contains the original unmodified source in gzip-compressed tar format and usually a gz file that contains the Debian-specific changes to the original source.
The utility dpkg-source packs and unpacks Debian source archives.While the two different types of manager do essentially the same job, their files are not directly interchangeable.