2026-08-04 Briefing

Rust enabled the Polonius borrow checker on nightly, aiming to stabilize it later this year with flow-sensitive checking that lets more code compile. JetBrains previewed an LSP extension bringing IntelliJ Java/Kotlin intelligence to VS Code and Cursor, free for now but tied to an Ultimate subscription later. Nix warns that sandbox-paths outside derivations are hidden inputs, breaking hermeticity.