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The mascot it super cute lion too. How can a project do everything so right? I was browsing some popular python libraries and they just slapped on the first image they got out of ChatGPT. It's nice to see care in the craft.

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mlinksva

16 hours ago

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It is https://www.youtube.com/watch?v=W8Ka_8kHTj4&t=903s

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santoshalper

17 hours ago

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It's developed by UNSW Sydney, whose mascot is a Lion. (Specifically, "Clancy the Lion"), so I am guessing it's probably that.

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kragen

14 hours ago

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That's also where John Lions taught.

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skavi

3 hours ago

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    John Lions is not Lions OS
       is not        is not
         Clancy the Lion

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imvetri

9 hours ago

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What does mascot mean

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saithound

8 hours ago

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A mascot is an animal figure that represents a product or sports team. For example, the penguin named Tux is the mascot of Linux, and the mascot for the Brisbane Broncos rugby team is the horse named Buck the Bronco.

Mascot is, unrelatedly, also a suburb of Sydney.

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snvzz

13 hours ago

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Not presumably, but explicitly. Both in documentation and presentations by seL4 they consistently make a point to mention so.

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mzs

14 hours ago

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aka the Lions book

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dctoedt

19 minutes ago

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My first thought was to wonder whether it was a Linux offshoot.

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spencerflem

17 hours ago

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Very cool! I’m a huge fan of Genode, another OS that runs on SeL4. Does anyone here know how they compare?

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panick21_

15 hours ago

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Genode is a framework that can run on many places and on higher level has its own abstractions. Lion OS is based on Microkit the framework developed by the seL4 people that will also be verified. So Lion OS/Microkit is basically the outgrowth of the original seL4 research.

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Y_Y

15 hours ago

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Unequal

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fithisux

3 hours ago

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"but contains composable components for creating custom operating systems that are specific to a particular task"

like reviving OSfree aka 64bit OS/2

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Propelloni

3 hours ago

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It's an OS built around a verified and formally proofed L4 kernel, ie. a microkernel like QNX or MACH. The L4 is a venerable design reaching back at least 25 years, if not longer. It has seen commercial and research uses, e.g. the SIMKO3 mobile phones or the Fiasco distribution. The term "task" is specific here. Running Linux as a custom operating system is a task in microkernel lingo.

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fithisux

5 hours ago

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Aussies were supposed to progress with Darbat.

It never happened.

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snvzz

13 hours ago

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On recent news, LionsOS, as of about a week ago (I got notified via their announcement maillist), includes a router/firewall scenario[0].

Do not miss Gernot Heiser's recent talk[1] at the seL4 Summit, where among other things he shows seL4 massively outperforming Linux in a web server scenario.

0. https://lionsos.org/docs/examples/firewall/

1. https://youtu.be/wP48V34lDhk

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hulitu

15 hours ago

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> To be successful, many more components are needed.

What is the purpose of this OS ? Can it mint Bitcoin ? Can it do fluid dynamics simulation ? Can it act as an interface to a database ? Can it host a database ? Is it interactive ? What kind of interface it presents to the user ?

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oytis

5 hours ago

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One application would be safety and security critical real-time systems that also need significant amount of processing power

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qubex

15 hours ago

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That’s a rather luridly practical view that’s entirely out of sync with academia and basic research that provides tangible benefits much further down the line.

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lukan

1 hour ago

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Yes, but basic reseach in IT is still not random, but usually has a clear goal, or at least some scope. Like indeed, focus on security? Focus on speed? Focus on reliability? Focus on energy efficency (because it is supposed to run on a tiny embedded device for long).

And the gimmick here seems to be in fact, that it is supposed to be flexibel

"is not a conventional operating system, but contains composable components for creating custom operating systems that are specific to a particular task. Components are joined together using the Microkit tool"

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kragen

14 hours ago

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Those are applications, not operating systems. With occasional exceptions, you can run any application on any operating system.

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mmooss

5 hours ago

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That begs the point: Each application will often run better on some OSes than on others. For example, high traffic websites usually aren't run on Windows 11.

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charlycst

15 hours ago

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There is an example of interface in the docs: https://lionsos.org/docs/examples/kitty/

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vrighter

5 hours ago

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no operating system does. That's application software you're thinking of. So no, it can't. But neither can windows, linux, macos, solaris, templeOS or any others

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kjs3

11 hours ago

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Could have been done for fun. You wouldn't understand.

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fortyseven

14 hours ago

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Yeah, Linus, what's the point?

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lmm

5 hours ago

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Hardly a fair comparison. Linus wanted an OS that would run on his own PC and let him do his Unix homework assignments.

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fifticon

4 hours ago

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if you rearrange the letters, you get the Linos OS.

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amelius

13 hours ago

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Mountain Lion is calling and wants its name back.

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CursedSilicon

11 hours ago

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You mean OS X 10.7 Lion?

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gethly

13 hours ago

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Oh no, it's written in C and not Rust. The blasphemy!

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aloha2436

13 hours ago

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I'm trying to picture in my mind a person who is a fan of Rust and somehow against an OS with a formally-verified kernel no matter the language. I'm not having much success.

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fooker

11 hours ago

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I see you have not met a lot of Rust activists.

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aloha2436

11 hours ago

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Certainly I don't seem to run into as many of them as I'm led to believe exists.

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pppppiiiiiuuuuu

11 hours ago

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It's funny how people always allude to fanatical Rust developers in the most tangential threads, but they never actually turn up and demand we rewrite the entire Kernel in Rust or whatever terrible takes they're alleged to have.

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fooker

2 hours ago

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https://discuss.haiku-os.org/t/replace-c-code-with-rust/6753

https://github.com/seL4/seL4/issues/487

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lovidico

8 hours ago

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Rust is supported by the [seL4 Microkit](https://docs.sel4.systems/projects/rust/), which is the core framework enabling LionsOS. LionsOS can currently run components written in Rust, and there are some WIP drivers written in Rust in the seL4 Device Development framework (judging from pull requests).

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kjs3

11 hours ago

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At least someone hasn't complained about it being 'unix like', always without defining what the non-unix-like OS they want would look like, or where the software to run on it would come from.

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pjmlp

4 hours ago

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First, we could start by what UNIX authors did after they considered UNIX done, looking at Plan 9 and Inferno.

Then there are the OSes already done during the 1960 and 1970 outside Bell Labs, as possible ideas.

As from where the software would come from, if we keep recicling UNIX, we will keep getting UNIX regardless of whatever cool features the OS might offer, as most developers are lazy.

Hence why it is great that while Apple and Google OSes have some UNIX there, bare bones POSIX apps will hardly make it into the store.

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snvzz

13 hours ago

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Rust, an immature language with fluidly evolving specification / reference implementation, is not suitable for high assurance nor formal verification.

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steveklabnik

11 hours ago

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… except that Rust’s compiler has been qualified for several safety critical standards, with more to come, and has several formal verification tools as well. Amazon even has placed bounties (and paid some) for proving things about the standard library.

Rust is not as immature or evolving in the ways you imply.

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fooker

1 hour ago

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> Amazon even has placed bounties (and paid some) for proving things about the standard library.

Can you provide some links? Thanks.