[Sunscratch]

>Rust has had 10x better tooling right from the start. Cargo vs SBT, no joke.

Cargo is a really good tool, but I wouldn't say it is 10x better than SBT.On the other hand, Scala can be used with different build tools: Maven, Gradle, Mill. With Rust you have no choice(or I'm not aware of). Rust-analyzer is better than metals, can't argue with that...

>Rust has improved its compiler performance by >3x in the last 5 years

Rust compiler is very slow. I can't imagine what compilation time was 5 years ago, but even now, it is incredibly slow, even compared to "slow" Scala compiler(which is no longer true). I'm working on a little project with bevy, and even on such small project compilation time sucks. You can't compare it with Scala, it's just completely different experience.

>Rust hasn't gotten any major new language feature in the last 6 years.

That's not true. Rust team handles these changes correctly. Rust has concept of "Editions", and every 3 years new edition introduces significant changes. I really like how editions work, it's a great way to maintain backwards compat.

>4 Mostly agree

>5 Fully agree

>It's easier and more performant to call C from Rust than to call C from Scala.

Yep, but it's not Scala but the JVM limitation. JNI sucks, but there is an effort to improve that (project Panama).

Overall, both Scala and Rust are great languages. Rust team has addressed many typical issues from the beginning. Scala had its mistakes, but moving in the right direction.