Issue 513
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Haskell Weekly Issue 513 curates the latest news and releases from the Haskell community. Featured content includes benchmarking LLM proficiency with Advent of Code puzzles in Haskell, a podcast episode on functional programming in industry, a web-based heap visualizer for ghc-debug, a tutorial on the Foldable typeclass for Elm developers, a guide to efficient PostgreSQL integration in Haskell, and a DSL for Template Haskell AST construction. Brief announcements cover releases of Stack 3.9.3, a new Haskell debugger v0.12, cassava 0.5.5.0, esqueleto-postgis v4, kdl-hs 1.0.0, a reactive Haskell notebook called sabela, and Haskell.org's acceptance into Google Summer of Code 2026.