F# Weekly #19, 2026 – Understanding Compilers Through an Algebraic Expression Compiler

Welcome to F# Weekly,

A roundup of F# content from this past week:

Microsoft News

• Copilot Studio gets faster with .NET 10 on WebAssembly
• Durable Workflows in the Microsoft Agent Framework
• Microsoft Agent Framework – Building Blocks for AI Part 3
• What’s New in Aspire 13.3 | Aspire Blog
• A Tour of Handoff Orchestration Pattern | Microsoft Agent Framework
• Visual Studio Code 1.119

Videos

• Yapping about GUIs, F# and Lisp — Matt R
• .NET MAUI Community Standup: Rust, SkiaSharp Everywhere, AI/ML Live Processing — .NET
• ASP.NET Community Standup: Simplifying Entra ID authentication with AI — .NET
• On .NET Live: Shaving the outbox pattern yak — .NET

Blogs

• ragingHungryPanda: Navigating and Learning Data Access in FSharp
• Understanding Compilers Through an Algebraic Expression Compiler | Jonas Lara
• AI + F#: Faster Development Without Losing Reliability – Ada Beat

There you go: #fsharp adabeat.com/fp/ai-f-fast…

— (@halcwb.bsky.social) 2026-05-04T19:07:14.386Z

Highlighted projects

• Neftedollar/FsMcp — Idiomatic F# toolkit for building Model Context Protocol (MCP) servers and clients with type safety and computation expressions
• WillEhrendreich/SageFs — Sage Mode for F# development — REPL with solution loading, Live Testing, Hot Reload, and MCP server support
• fs-fio/fio — A type-safe, purely functional effect system for asynchronous and concurrent F#
• Neftedollar/ll-lang — Write once, compile to F#, TypeScript, Python, Java, and C# — LLM-optimized syntax with self-hosting
• jonas1ara/Algebraic-Tiny-Compiler — Understanding compilers through algebra

New Releases

• FSharp.Data 8.1.13
• NBomber 6.4.0
• Pulsar.Client 3.15.2
• Akka.FSharp 1.5.67
• Akka.Persistence.FSharp 1.5.67
• SageFs 0.6.270
• Equinox.MessageDb 4.1.3
• Propulsion.MessageDb 3.0.1
• EluciusFTW.SpectreCoff 0.54.7
• FSharp.TypeProviders.Templates 8.10.0
• FsMcp.Core 1.1.1
• Fable.TypedJson 0.3.0
• FunStripe.Core 2.0.6
• YamlFrontMatter 0.10.8
• CommandTree 0.5.0
• UnionConfig 0.2.0
• FSharp.Windows.Dsl 0.3.0
• Expecto 11.0.0-alpha9

This is what is happening right now. Claude uses the fsi-mcp to slowly and step by step implement a plan in #fsharp. AI + #sharp + #fsi-mcp

— (@halcwb.bsky.social) 2026-05-07T09:06:48.150Z

That’s all for now. Have a great week.

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