Programming language tooling has a quiet good week

Sonic Pi v5, Squeak 6.1, and Chicken Scheme 6.0 all dropped, and Rust got two notable technical posts: one on SIMD on the GPU and one on the new fast floating point math API. Tail-call optimization in C finally getting standardized in 2025 also landed with some surprise, given how fundamental TCO is to functional-style programming.

None of these are industry-shaking individually, but together they suggest a healthy moment for languages and tooling outside the mainstream. Chicken Scheme in particular got warm comments from someone who picked it up over the weekend specifically because it compiles to binaries and has a lively ecosystem. The Rust GPU SIMD post surprised people who assumed SIMD was CPU-only.

The coding agents language debate also surfaced, with a thread asking what the best programming language for writing agents is. The most technically interesting point in the comments: syntactic density doesn't necessarily mean cheaper tokens, because symbols don't tokenize as well as plain English, which has real implications for how you structure agent prompts and scaffolding code.