Mattias Karlsson's Avatar

Mattias Karlsson

@devlead.se

Partner & Technical fellow at WCOM AB DevOps and Developer Tools Microsoft MVP. Been coding since the ’80s (C128 & Amiga). Father of 2, husband of 1. Occasionally blogs at https://devlead.se

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06.07.2023
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Latest posts by Mattias Karlsson @devlead.se

AREXX was written in 1987, 1990 AmigaOS included it by default with AmigaOS 2.0.
It allowed for inter process communication, applications could expose their internals for automation, essentially MCP four decades ago...

07.03.2026 18:18 👍 2 🔁 0 💬 0 📌 1
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a red car is driving past a building that says gun ALT: a red car is driving past a building that says gun

Misread as grand theft, but kinda checks out too🤔😎

07.03.2026 16:43 👍 9 🔁 0 💬 1 📌 0

Indeed looking so👀

07.03.2026 16:40 👍 0 🔁 0 💬 0 📌 0
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Preview Release v7.0.0-preview4 · dotnet SqlClient · Discussion #4006 Hello Community! We are pleased to announce that the 7.0.0 Preview 4 release is now available, and it (finally!) addresses this long-standing issue. Please give it a try, and open new Issues with a...

SqlClient 7.0 preview 4 release notes - major breaking changes in this preview release, please help the team by testing it out
#dotnet #sqlserver #sqlclient

06.03.2026 16:30 👍 6 🔁 4 💬 1 📌 0

😱🤣

07.03.2026 10:13 👍 1 🔁 0 💬 0 📌 0

I did it one release at the time, so controlled and a little each month.

06.03.2026 18:20 👍 1 🔁 0 💬 0 📌 0

Nice gone full OIDC for @nuget.org , all API keys deleted 👍 Took a while for over fifty packages.

06.03.2026 17:37 👍 6 🔁 0 💬 1 📌 0
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Dew Drop – March 6, 2026 (#4619) – Morning Dew by Alvin Ashcraft Morning Dew by Alvin Ashcraft

Dew Drop – March 6, 2026 (#4619)

www.alvinashcraft.com/2026/03/06/d...

#dotnet #vscode #ai #cloud #webdev #csharp #visualstudio #windowsdev #mobiledev #dewdrop

06.03.2026 12:12 👍 3 🔁 1 💬 0 📌 0

I've been using @cakebuild.net for a long time, it is really great!To be able to write C# to make up all your build tasks and everything around it, test it locally and just minimally bootstrap Cake in your yml file for your CI workflow.

Thanks to @devlead.se and the Cake team for their dedication!

06.03.2026 08:21 👍 6 🔁 2 💬 3 📌 0
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S08E14 - From YAML Chaos to C# Clarity: Mattias Karlsson on Cake Build We interview Mattias Karlsson about Cake, a powerful C# build orchestration framework for .NET. Mattias discusses the frustrations of YAML-based CI/CD pipelines, how Cake simplifies builds, and the incredible benefit of being able to debug your build scripts locally. Learn how Cake enables cross-platform builds, reduces complexity, and offers a developer-friendly alternative to traditional build tools. Perfect for .NET developers looking to improve their CI/CD process and gain more control over their builds.

S08E14 - From YAML Chaos to C# Clarity: Mattias Karlsson on Cake Build

We interview Mattias Karlsson about Cake, a powerful C# build orchestration framework for .NET. Mattias discusses the frustrations of YAML-based CI/CD pipelines, how Cake simplifies builds, and the incredible benefit of being

06.03.2026 08:07 👍 3 🔁 2 💬 0 📌 1

Thanks for the kind words❤️Made my Friday.

Cake wouldn't be were it is without people like you in it's community!

Cake's dedication is a marathon, activity levels might vary, but aim for long-term longevity, we've been in/out of fashion multiple times over the past 12 years, but our focus the same.

06.03.2026 08:42 👍 1 🔁 0 💬 0 📌 0

Norwegians rarely have lunch; they have sandwiches.🤔😎

05.03.2026 10:44 👍 0 🔁 0 💬 0 📌 0

It sometimes... feels slightly inefficient and risks to make same mistakes again and again.

05.03.2026 08:56 👍 1 🔁 0 💬 0 📌 0

One interesting thing about corporate reorgs is that, as a contributor, consumer, or consultant, you can find yourself in meetings where you know more about the history of their products than they do.🤷

05.03.2026 08:29 👍 3 🔁 0 💬 1 📌 0

Especially when in a car.

05.03.2026 06:04 👍 1 🔁 0 💬 1 📌 0

5. 1:1 at conference after party.

04.03.2026 19:35 👍 4 🔁 0 💬 1 📌 0

.NET 10 even better 🤘😎

04.03.2026 19:27 👍 0 🔁 0 💬 0 📌 0

Cake v6.1.0 released 🎉
FormattableString logging, testing .slnx support, in-process NuGet + auth, and multiple fixes.
Full release details at:
hubs.li/Q0458yDh0 #dotnet #csharp #devops

04.03.2026 15:57 👍 8 🔁 2 💬 0 📌 0
Captain Haddock looking very frazzled, saying, “What a week, huh?”
Tintin leans into the frame and says, “Captain, it’s Wednesday.”
Snowy aka Milou is very excited about the drink he has found.

Viñeta de Tintin
El capitán Haddock, sentado a una mesa y con aspecto de estar agotado, dice: "¡Menuda semana, ¿eh?".
Tintín, a su derecha, le dice: "Capitán, es miércoles".
A la izquierda, Milú mira muy contento la bebida que está en la mesa.

Captain Haddock looking very frazzled, saying, “What a week, huh?” Tintin leans into the frame and says, “Captain, it’s Wednesday.” Snowy aka Milou is very excited about the drink he has found. Viñeta de Tintin El capitán Haddock, sentado a una mesa y con aspecto de estar agotado, dice: "¡Menuda semana, ¿eh?". Tintín, a su derecha, le dice: "Capitán, es miércoles". A la izquierda, Milú mira muy contento la bebida que está en la mesa.

04.03.2026 11:35 👍 376 🔁 159 💬 0 📌 5
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#Oredev2026 is built around 10 tracks exploring the real challenges of modern software development. From AI and architecture to leadership, security, quality, and the spaces around code; we’re covering the full landscape.
Over the coming weeks, we’ll introduce each track.
Curiosity required.

04.03.2026 08:00 👍 4 🔁 1 💬 0 📌 0
Embed Card for https://www.coffeeandopensource.com/guest/jeffrey-snover.html

Embed Card for https://www.coffeeandopensource.com/guest/jeffrey-snover.html

Had a great time chatting with @jsnover.com on @coffeeandopensource.com today about all kinds of #tech topics. Video is live on YouTube and podcast is available wherever you find them. Take a look/listen and thanks!
https://www.coffeeandopensource.com/guest/jeffrey-snover.html

03.03.2026 22:32 👍 2 🔁 2 💬 0 📌 0

Live now on Twitch, join me and @jsnover.com or a chat on #OSS and #tech live on Twitch. Come say hello and join the conversation!
https://www.twitch.tv/isaacrlevin

03.03.2026 18:55 👍 1 🔁 1 💬 0 📌 0
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Dew Drop – March 3, 2026 (#4616) – Morning Dew by Alvin Ashcraft Morning Dew by Alvin Ashcraft

Dew Drop – March 3, 2026 (#4616)

www.alvinashcraft.com/2026/03/03/d...

#dotnet #webdev #ai #vscode #windowsdev #csharp #mobiledev #visualstudio #cloud #sqlserver #dewdrop

03.03.2026 12:06 👍 1 🔁 1 💬 0 📌 0

At this rate it might "just' take our lives.

03.03.2026 17:28 👍 2 🔁 0 💬 0 📌 0

But isn't that Schrödingers security 🤔😎

02.03.2026 20:54 👍 0 🔁 0 💬 0 📌 0

Have you tried turning it off and on again? 🤔😎

02.03.2026 20:46 👍 0 🔁 0 💬 1 📌 0
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HAPPENING TODAY!
Learn to use modern .NET and Cake.Sdk to write DevOps definitions as file-based C# apps, with full IDE and debugging support, Cake APIs, and a clean alternative to traditional build scripts.

See you LIVE at 9AM PT here ➡️ buff.ly/hHfanYs

02.03.2026 12:01 👍 5 🔁 1 💬 0 📌 0

Well that's nut(s)...

02.03.2026 19:55 👍 0 🔁 0 💬 0 📌 0

Thanks to all for coming💗Great questions!
www.youtube.com/watch?v=GGeL...

The Code from the video:
github.com/azurevoodoo/...

My talk from .NET Conf introducing Cake.Sdk:
www.youtube.com/watch?v=e7hk...

#dotnet #csharp #devops

02.03.2026 18:09 👍 3 🔁 1 💬 0 📌 0

Going live in 20 minutes, with brand new bits and without a safety .NET 😎

#dotnet #csharp

02.03.2026 16:37 👍 0 🔁 1 💬 0 📌 0