Rust is the only language I know that systematically tests new compilers against a big real-world corpus: https://internals.rust-lang.org/t/regression-reports-stable-2015-09-17-vs-beta-2015-10-02-nightly-10-06/2737 amazing!
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The author of rust-analyzer discussing how language features help or hinder fast IDEs.
If you allow `from m import *` you can't analyse files in isolation, and it's even harder in Rust.
Excellent series on Self, both the programming model and the tool chain.
I love how opening an inspector on a value (e.g. nil) then shows a link to all occurrences of the value in other open inspectors!
I'm still not sure whether a language should include a "kitchen sink linter" like Rust's clippy or have a package oriented "thousand flowers bloom" linter like eslint for JS and TS.
Clippy is delightful out of the box but eslint makes it so easy to have project specific lints.
