Three release cycles landed within days of each other this week, and together they mark a generational handover across the languages most likely to be running your build server.
Rust 1.99.0 stabilises the definition of variadic functions across the C and C-unwind ABIs, meaning developers can now write C-style variadic functions directly in Rust rather than only calling them. The release also fixes the conditions under which querying size and alignment through raw pointers is guaranteed safe — a subtle but long-standing soundness question. For anyone wrapping C libraries, writing FFI shims or building printf-style APIs, this closes one of the oldest gaps between Rust and the systems languages it interoperates with.
Qt 6.12 arrived on 30 September as the framework's newest Long Term Support release, and its headline is platform reach: HarmonyOS becomes an officially supported LTS platform for the first time. The LTS tag means five years of support and updates, and the release adds cybersecurity work aimed squarely at the European Cyber Resilience Act, whose obligations are expected to bite from December 2027. Phoronix also flags QML hot reloading and a StyleKit addition as developer-facing improvements.
Python 3.10 is done. The 3.10.22 release, dated 1 October, is source-only and is the series' final upstream security update: 3.10 reaches end of life on 31 October 2026, after which no security patches will be issued. The project's guidance is blunt — move to a newer line. Complicating the picture slightly, Python 3.15.0 had been scheduled for 1 October and had not appeared at the time of writing.
Smaller items in the same round-up matter to anyone maintaining a toolchain: GDB 18.1 can save command history to a file and gains Python API extensions, plus non-stop mode and native thread-local-storage variables on Windows; Git 2.56 introduces `git add --resolved`, which stages only the files whose changes actually resolved a conflict; Crystal 1.21.1 patches request-smuggling and zip-bomb flaws in `HTTP::Server`; VS Code's CMake Tools 1.24 can run and debug CTest tests from CodeLens; Kong AI Gateway 2.2 adds native support for TypeSafe's Jev model and normalises skill-API formats; and BoxLang's AI module 3.4.0 ships an `IGateway` system for CLI and HTTP agent interaction with multi-stage prompt-injection defences.
The through-line: the infrastructure layer is shedding its oldest ballast — variadic C, pre-LTS mobile targets and a five-year-old Python minor — all in the same week.
