The future is now, depending on where you live. https://www.bbc.com/news/world-asia-51321661

How did you go about installing the other two packages from git? Do you know what directory they were first cloned to? Did you build from source or run an executable like an appimage? Did any of these actions occur prior to the install of masterpdfeditor?

https://en.m.wikipedia.org/wiki/Dead_reckoning