Personally, I think interactive usage has improved quite a bit. I don't "feel" it that badly in 1.7. It was bad enough earlier in the 1.0 series that I stopped

Personally, I think interactive usage has improved quite a bit. I don't "feel" it that badly in 1.7. It was bad enough earlier in the 1.0 series that I stopped using it for a while (I used it before <1.0 as well). I think the problems were from: 1) llvm itself getting dramatically slower over time, before more focus upstream on compiler speed more recently: https://www.npopov.com/2020/05/10/Make-LLVM-fast-again.html https://www.npopov.com/2020/05/10/Make-LLVM-fast-again.html 2) different types of invalidations 3) less than ideal precompilation of packages I think all of it has been improved, and can certainly be improved further. That also includes improving the speed of its interpreter (vs the JIT), which exists but was never optimized for speed afaik.