Alexandre Mutel

@xoofx
1.6K Followers
315 Following
2.1K Posts

VP of Engineering at DataGalaxy, C#/.NET, OSS, lang/compilers, GPU/sound, performance/SIMD/HPC, architecture 🏎️
Microsoft MVP, ex-demoscene PC/Amiga, ex-Unity 🎆
Veggie 🌿, opinions are my own

Supporting freedom for 🇺🇦 and 🇵🇸

He/him/his

Websitehttps://xoofx.github.io
GitHubhttps://github.com/xoofx/
LocationFrance , near Grenoble
Alexandre MutelMay 22

I just released CodeAlta https://codealta.github.io/ - one of the first efficient AI coding-agent TUIs built entirely in C#/.NET

I've been developing and using it daily for the past 3 months.

CodeAlta brings you a beautiful, colorful timeline interface, multiple threads in the same workspace, a real prompt editor experience, quick file viewing/editing with syntax highlighting, in-app model provider configuration, a multi-agent-ready environment, and much more! ✨

#dotnet #csharp

Alexandre MutelMay 21

RE: https://dotnet.social/@dotnet/116613434929483484

Finally! `unsafe` suddenly becomes safer 😊

Alexandre MutelApr 16
Simon CroppApr 16
https://duendesoftware.com/blog/20260409-verify-open-source-sponsorship?utm_campaign=content&utm_medium=social&utm_source=social
Verify - Open Source Sponsorship

Verify, the powerful .NET snapshot testing library, is Duende's fifth Open Source Sponsorship recipient. See how Verify simplifies complex assertions and helps Duende maintain API stability for security products like IdentityServer and BFF.

Duende Software
Alexandre MutelMar 20
musl libcMar 20

musl 1.2.6 is now available.

For details see the release announcement on the mailing list: https://www.openwall.com/lists/musl/2026/03/20/1

Source link: https://musl.libc.org/releases/musl-1.2.6.tar.gz

Detailed WHATSNEW: https://git.musl-libc.org/cgit/musl/tree/WHATSNEW?id=v1.2.6#n2444

musl - musl 1.2.6 released

Alexandre MutelMar 18
Neil HenningMar 18
I wrote up a thing about the AI coding agents https://www.neilhenning.dev/posts/five-stages-grief/
Five Stages of Grief With the Rise of AI

I tried copilot in VS Code sometime in 2025 and was thoroughly disappointed with its ability. It felt like a really bad auto-complete at best, making plenty of mistakes and generally being utterly irritating to actually use with its need to constantly pop in as I was typing with long form coding suggestions that were often wrong. I was already predisposed to being negative about AI due to the usual mix of reasons and wrote off all the AI coding tools as useless.

Neil Henning
Alexandre MutelMar 14

What's your favorite AI Coding agent CLI/GUI that can use Codex / Copilot subscriptions?

* Codex is pretty bad from my experience
* Copilot is quite better
* OpenCode I haven't tried recently but I have heard good things.
* Squad, quite good, from a multi-agent perspective, used at work, haven't setup it at home

Any others that you would recommend?

Alexandre MutelMar 4
Wiesław ŠoltésMar 4
Just migrated my TreeDataGrid documentation site from DocFx to Lunet https://wieslawsoltes.github.io/TreeDataGrid/ thanks @xoofx for recommending Lunet https://lunet.io/, its looks so nice now!
Alexandre MutelMar 4

Another old project of mine, Tomlyn, just got a major refresh with the 1.0 release: https://xoofx.github.io/Tomlyn/ - a solid, modern foundation for working with TOML in .NET.

Coding agents made it possible to reach this level of polish in my spare time. It's also pretty liberating to ship it, feel the accomplishment, and move on.

#dotnet

Tomlyn

Tomlyn High-performance TOML 1.1 for .NET: lexer/parser, roundtrippable syntax tree, and a System.Text.Json-style object serializer. Get started Serialization Low-level APIs GitHub dotnet add package Tomlyn Available on NuGet - net8.0, net10.0, netstandard2.0 Looking for YAML support? Check out SharpYaml. Familiar API Tomlyn is intentionally shaped like System.Text.Json: TomlSerializer, TomlSerializerOptions, source-generated contexts, and a converter pipeline. Two layers Use the...

Alexandre MutelMar 4
Tim Bray 🇨🇦Mar 4

From @nelson
GitHub status
https://mrshu.github.io/github-statuses/

A more honest third party monitor of GitHub services. The vital service has under 92% of uptime for the last three months. Rumor is they are migrating everything to Azure and it is going very badly

The Missing GitHub Status Page

Historical GitHub uptime reconstructed from archived status data.

Alexandre MutelMar 4

Don Knuth, himself, mentioning using Claude Opus 4.6 that helped him resolved a difficult problem. https://cs.stanford.edu/~knuth/papers/claude-cycles.pdf

"I’ll have to revise my opinions about “generative AI” one of these days."

So, is GenAI still generating pure garbage, Knuth an idiot, that likely doesn't know what is he doing? 🤔