As stated by another user it's not true open source, the source is solely available for personal use and for the submission of patches back to the author.

Such a model can backfire though as it would appear to be legal for a third-party contributor to create a set of scripts that would compile and prepare the application (load all the dependencies in a container and so forth) and release those scripts. Those scripts could even become accepted by a Linux distro's package manager, similar to how package managers package freeware prop software by using a script to legally grab the binary from the developer's site and installing it.