--- title: Haskell ecosystem activities report: December... description: Well-Typed's thirtieth Haskell ecosystem activities report covering December 2025 to February 2026. Key highlights include: a more robust Haskell Debugger... canonical: https://daily.dev/posts/haskell-ecosystem-activities-report-december-2025-february-2026-dxnybmmbf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Haskell ecosystem activities report: December 2025–February 2026 | daily.dev og:description: Well-Typed's thirtieth Haskell ecosystem activities report covering December 2025 to February 2026. Key highlights include: a more robust Haskell Debugger... og:url: https://daily.dev/posts/haskell-ecosystem-activities-report-december-2025-february-2026-dxnybmmbf og:image: https://api.daily.dev/og/posts/dXNyBMMbF.png og:image:alt: Haskell ecosystem activities report: December 2025–February 2026 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Haskell ecosystem activities report: December 2025–February 2026 **[Planet Haskell](https://daily.dev/sources/phaskell)** · 15 min read · 0 upvotes · 0 comments ## Summary Well-Typed's thirtieth Haskell ecosystem activities report covering December 2025 to February 2026. Key highlights include: a more robust Haskell Debugger (hdb) with stack traces, exception breakpoints, and Windows support; live program monitoring via eventlog-live with OpenTelemetry support; progress on decoupling Language.Haskell.Syntax from GHC internals (Trees That Grow); steps toward a standalone reinstallable base package; and a fix for a GHC absence analysis bug. GHC releases 9.12.3 and 9.14.1 shipped. HLS 2.13.0.0 was released with GHC 9.14 support and concurrent file loading. Notable team news: Matthew Pickering is leaving Well-Typed at end of March. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Haskell ecosystem activities report: March–May 2026](https://daily.dev/posts/haskell-ecosystem-activities-report-march-may-2026-vfwpljwx5) · Planet Haskell · 0 upvotes · 0 comments - [Haskell ecosystem activities report: June–August 2025](https://daily.dev/posts/haskell-ecosystem-activities-report-june-august-2025-aodm7azik) · Planet Haskell · 0 upvotes · 0 comments - [Issue 530](https://daily.dev/posts/issue-530-r6efennml) · Haskell Weekly · 0 upvotes · 0 comments - [Issue 492](https://daily.dev/posts/issue-492-wb8y3ene2) · Haskell Weekly · 0 upvotes · 0 comments - [Issue 531](https://daily.dev/posts/issue-531-ku5fvao31) · Haskell Weekly · 0 upvotes · 0 comments --- Tags: [#haskell](https://daily.dev/tags/haskell) [View this post on daily.dev](https://daily.dev/posts/haskell-ecosystem-activities-report-december-2025-february-2026-dxnybmmbf) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Haskell ecosystem activities report: December 2025–February 2026","url":"https://daily.dev/posts/haskell-ecosystem-activities-report-december-2025-february-2026-dxnybmmbf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/haskell-ecosystem-activities-report-december-2025-february-2026-dxnybmmbf"},"datePublished":"2026-03-19T17:07:16.094Z","dateModified":"2026-03-19T17:07:41.045Z","description":"Well-Typed's thirtieth Haskell ecosystem activities report covering December 2025 to February 2026. 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