Right now I'm using a stanza built by the Firefox extension cli-get to drive aria2c to download source to the Greenstone Digital Library Software (Greenstone.org) to compile on an RPi.
This is probably a Bad Idea as they intend for x86 and AMD64 usage with their provided binaries. There are archives to be built & data to be indexed. There is librarianism that must be resumed.
After all, doing such things is just an intermediate step en route to microfilming. I need a contractor for that.