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wire 2026-09-05
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$ the-wire · showcase

Layouts guide rewritten, Bootsnap 1.26.0 fixes cache corruption

By RepoJournal · Filed · About Rails

Vladimir Dementyev Ayush Newatia gmcgibbon Yasuo Honda byroot Vipul A M
6 people shipped this
Vladimir Dementyev @palkan 2 cited Ayush Newatia @ayushn21 1 cited gmcgibbon @gmcgibbon 1 cited Yasuo Honda @yahonda 1 cited byroot @byroot 1 cited Vipul A M @vipulnsward

Rails rewrote its Layouts and Rendering guide and released Bootsnap 1.26.0 with fixes for corrupted cache entries and a potential Ruby SEGV.

Rails merged a complete rewrite of the Layouts and Rendering guide [1]. The guide now focuses on the relationship between the controller and the view, with content already covered elsewhere, like partials rendering details, moved to other guides. The rewrite introduced a broken link to the Redirecting Requests section, which was quickly fixed to point to action_controller_overview.html#redirecting-requests [2]. This rewrite affects developers who rely on the guide as a reference for rendering conventions.

Bootsnap 1.26.0 is out, fixing a bug where `bootsnap precompile` could generate a corrupted cache entry if an already cached YAML file was modified without changing its size. It also handles cases where a top-level `Coverage` constant is defined without being the true stdlib module, and works around a potential Ruby SEGV when `Bootsnap.instrumentation` raises an error [3]. Upgrade to avoid corrupted caches and crashes in those edge cases.

Rails also refactored `@@variables` class variables into plain `attr_accessors` to make them safe to reference on Ractors today, in preparation for Ruby 4.0.6 where class variables won't be ractor-safe [4]. This is part of an ongoing effort to reduce class variable usage in Rails. Separately, the Le Mans agent tooling bumped to 1.3.1 and added an `agent.max_output_tokens` option to control the agent's output length [5][6].

$ ls rails/reviews/ # the step-back reads

the week in review Rails moves config to class attributes the month in review Rails deepens Ractor safety, ships Marcel 2.0, and retires decade-old APIs
Topics: Ruby Full archive →

Quick answers

What shipped in Rails on September 5, 2026?
Rails rewrote its Layouts and Rendering guide and released Bootsnap 1.26.0 with fixes for corrupted cache entries and a potential Ruby SEGV. In total, 28 commits, 6 pull requests, and 1 releases landed.
Who contributed to Rails on September 5, 2026?
6 developers shipped this update, including Ayush Newatia, gmcgibbon, Yasuo Honda, Vladimir Dementyev, Vipul A M, and byroot.
What were the notable Rails updates?
[RF-DOCS] Rewrite the Layouts and Rendering guide (#57152), Fix broken link to Redirecting Requests in layouts_and_rendering.md, and v1.26.0.
♥

$ log @rails --recent

ActionDispatch drops regexp re-serialization per ParameterFilter build 3 shipped Rails fixes docker-entrypoint to honor extra server flags 8 shipped PostgreSQL triggers stay disabled after failed yield 23 shipped Ractor-safe config moves in Rails, Propshaft 34 shipped

$ log --all # elsewhere on the wire

Meta React Native adds Stable API guards to renderer attributed string FastAPI & Pydantic Pydantic fixes Mypy plugin crash, tightens datetime constraints

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