Haskell Weekly Issue 531 curates the latest from the Haskell community. Featured articles include a deep dive into actegories and optics by Bartosz Milewski, a dev log on implementing new GHC syntax, a podcast episode with top GHC contributor Sylvain Henry, a technique for type-checked non-empty strings with TemplateHaskell yielding ~10% build-time improvements, a guide on emulating inline assembly in GHC for low-level CPU instruction access, and an overview of Haskell security tooling. Job listings include roles at LivTours and Standard Chartered. Notable releases include Hyperbole 0.7 with multipart file uploads and reflex-vty 1.0. Community highlights cover a BitNet 1.58 LLM experiment in MicroHaskell and GHC proposals for top-level shared IO computations.
