F# Weekly #14, 2026 – Serde.FS Brings Compile-Time RPC to F#

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Serde.FS alpha.9 — Compile-time RPC for F# with no reflection, no controllers
• Florian Verdonck: Fantomas — exploring new approach to trivia handling

🚀 Serde.FS alpha.9 — Deterministic RPC for F#No reflection. No controllers.Just compile‑time RPC clients + routing.Includes:• [<RpcApi>]• ASP.NET RPC server• Deterministic JSON backend• Shared → Server → Client examplegithub.com/serde-fs/Ser… #fsharp #rpc #aot #serde #dotnet

— Jordan Marr (@jordanmarr.bsky.social) 2026-03-23T00:23:57.049Z

Microsoft News

• Explore union types in C# 15 – .NET Blog
• Aspire 13.2: Dashboard Gets Smarter Export and Telemetry | Aspire Blog
• Aspire Docs in Your Terminal (and Your AI’s Brain) | Aspire Blog
• Microsoft Agent Framework Version 1.0 | Microsoft Agent Framework
• Visual Studio March Update – Build Your Own Custom Agents – Visual Studio Blog
• Bookmark Studio: evolving bookmarks in Visual Studio – Visual Studio Blog
• Visual Studio Code 1.114

Videos

• .NET MAUI Community Standup | Introducing maui-labs – YouTube
• On .NET Live – Imposter: A Mocking Library – YouTube

Blogs

• Functional Languages and the Future of Programming (Part 1) – Linux Professional Institute (LPI)
• Samir Parikh: A Better Way to Represent a Deck of Cards in F#

Highlighted projects

• ingted/FSharp.MCP.DevKit — Experimental prototype of an F# development toolkit delivered via the Model Context Protocol (MCP).
• WillEhrendreich/SageFs — Sage Mode for F# development: REPL with solution loading, Live Testing, Hot Reload, and MCP server support
• laurentlb/shader-minifier — Minify and obfuscate GLSL or HLSL shader code; written in F#, used widely in the demoscene
• DataficationSDK/Verso — Extensible interactive notebook platform for .NET with F# support, runs in VS Code and the browser
• Neftedollar/orleans-fsharp — Idiomatic F# computation expressions for Microsoft Orleans — full Orleans 10.0.1 parity

New Releases

• Serde.FS v1.0.0-alpha.9
• FSharp.Data 8.1.5
• FSharp.Control.AsyncSeq 4.12.0
• Pulsar.Client 2.22.0
• FSharp.Formatting 22.0.0
• SQLProvider 1.5.18
• Akka.FSharp 1.5.64
• Dapper.FSharp 4.10.0
• SqlHydra.Query 3.6.0
• FsCodec.SystemTextJson 3.1.2
• Avalonia.FuncUI v1.5.2
• FSharp.Stats 0.6.0
• FsShelter 5.0.0
• Fss-lib.Core 3.0.0
• FSharp.TypeProviders.Templates 8.4.0
• FsMcp 1.0.1
• Orleans.FSharp 1.0.0
• shader-minifier 1.6.0
• Verso v1.0.12
• fantomas 8.0.0-alpha-009
• WebSharper 10.1.0.667

#neovim version 0.12.0 is out! Almost exactly a year of hard work since 0.11.0.Huge thanks to everyone who worked on it, as well as to all Neovim users!Release: github.com/neovim/neovi…News: github.com/neovim/neovi…Changelog: github.com/neovim/neovi…Here are top 10 most liked features:

— Neovim (@neovim.io) 2026-03-29T17:28:32.649Z

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

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