Asterinas: OS kernel written in Rust and providing Linux-compatible ABI

Decades ago Linus Torvalds was asked in an interview if he feared Linux to be replaced by something new. His answer was that some day someone young and hungry would come along, but unless they liked writing device drivers Linux would be safe.

This is all paraphrased from my memory, so take it with a grain of salt. I think the gist of it is still valid: Projects like Asterinas are interesting and have a place, but they will not replace Linux as we have it today.

(Asterinas, from what I understood, doesn't claim to replace Linux, but it a common expectation.)

More recently, in a similar vein:

> Torvalds seemed optimistic that "some clueless young person will decide 'how hard can it be?'" and start their own operating system in Rust or some other language. If they keep at it "for many, many decades", they may get somewhere; "I am looking forward to seeing that". Hohndel clarified that by "clueless", Torvalds was referring to his younger self; "Oh, absolutely, yeah, you have to be all kinds of stupid to say 'I can do this'", he said to more laughter. He could not have done it without the "literally tens of thousands of other people"; the "only reason I ever started was that I didn't know how hard it would be, but that's what makes it fun".

https://lwn.net/Articles/990534/

> Hohndel clarified that by "clueless", Torvalds was referring to his younger self

As the saying goes "We do this not because it is easy, but because we thought it would be easy."

Occasionally these are starts of great things.

Sometimes, we do such things because it’s hard. We enjoy the challenge. Those that succeed are glad to make it, too.