For learning purposes I created quic[0]. I wanted to strip it down to the bare minimum for running something in a "container". I got as far as having it use a preexisting network namespace. The networking part felt like a major piece of work (setting up the network in bash was tedious) so I figured I'd call it a day and leave it as is. Lots of fun and learned a lot about containers/namespaces in the process.

[0] - https://github.com/archevel/quic

Wasn't Python and Postgresql intentionally created for learning purposes? I'm not saying that this project is just as important, just pointing out that "learning purposes" is not a good predictor of a useless project.

"just a hobby, won't be big and professional like gnu" ~ Linus Torvalds

Indeed. https://groups.google.com/forum/#!original/comp.os.minix/dlN...

Python originated as a scripting language for a niche OS.

Postgresql came from adding SQL to postgres (mostly? a research project), while postgres itself was mainly a research project.

Sqlite was originally a Tcl extension that "escaped into the wild".

Not to mention all of the professional projects which failed and fell off the radar entirely. It's hard to say what has merits without giving it time.

Yeah, and aren't research projects often meant "for learning purposes" as well? :-)