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
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
Reposted by Mattias Karlsson
While build & release pipelines are often created in YAML/JSON/XML, using C# offers clearer control flow. This session shows managing GitHub Actions pipelines with C#, Cake SDK & .NET 10, enabling local testing & debugging in VSCode.
hubs.li/Q03VJlxp0 #dotnet #dotnetconf
hubs.li/Q03VJlxp0 #dotnet #dotnetconf
November 26, 2025 at 2:23 PM
While build & release pipelines are often created in YAML/JSON/XML, using C# offers clearer control flow. This session shows managing GitHub Actions pipelines with C#, Cake SDK & .NET 10, enabling local testing & debugging in VSCode.
hubs.li/Q03VJlxp0 #dotnet #dotnetconf
hubs.li/Q03VJlxp0 #dotnet #dotnetconf
Rarely are awards given to an OSS project for being dependable, non-volatile, and well-maintained.
But for one's dependencies, boring can be a good low-friction get shit done place to be.
But for one's dependencies, boring can be a good low-friction get shit done place to be.
November 25, 2025 at 9:19 AM
Rarely are awards given to an OSS project for being dependable, non-volatile, and well-maintained.
But for one's dependencies, boring can be a good low-friction get shit done place to be.
But for one's dependencies, boring can be a good low-friction get shit done place to be.
I'm going to have a harsh discussion with whoever wrote this code… though it'll probably end up being a monologue.
November 24, 2025 at 7:19 PM
I'm going to have a harsh discussion with whoever wrote this code… though it'll probably end up being a monologue.
Reposted by Mattias Karlsson
Thanks to all who came to my .NET Conf session, you can watch it again at
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by dotnet
www.youtube.com
November 14, 2025 at 8:34 AM
Thanks to all who came to my .NET Conf session, you can watch it again at
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
Nice to see the personal to-do list of getting projects onto using NuGet OIDC and .NET 10 getting shorter. When you maintain more than 50 projects, it takes an evening or two, but nice not to have to care about expiring tokens again. Now just need @nuget.org to support Azure Trusted Signing😎
#dotnet
#dotnet
November 23, 2025 at 10:12 PM
Nice to see the personal to-do list of getting projects onto using NuGet OIDC and .NET 10 getting shorter. When you maintain more than 50 projects, it takes an evening or two, but nice not to have to care about expiring tokens again. Now just need @nuget.org to support Azure Trusted Signing😎
#dotnet
#dotnet
Reposted by Mattias Karlsson
GitHubActionsTestLogger now has support for Microsoft.Testing.Platform!
Thanks a lot to @martincostello.com for testing and debugging.
github.com/Tyrrrz/GitHu...
Thanks a lot to @martincostello.com for testing and debugging.
github.com/Tyrrrz/GitHu...
November 23, 2025 at 6:24 PM
GitHubActionsTestLogger now has support for Microsoft.Testing.Platform!
Thanks a lot to @martincostello.com for testing and debugging.
github.com/Tyrrrz/GitHu...
Thanks a lot to @martincostello.com for testing and debugging.
github.com/Tyrrrz/GitHu...
Reposted by Mattias Karlsson
GIG ALERT! Friday 5 December, we're throwing a Build Stuff afterparty at Alaus Namai in Vilnius! A night of live tech comedy video disco alt pop punk rock'n'roll with @dylanbeatt.ie, @rendle.dev, @eli.holderness.dev, @vagifabilov.bsky.social and Hannes Lowette.
Doors 19:00! FREE!
See you there! 🤘🏼
Doors 19:00! FREE!
See you there! 🤘🏼
November 23, 2025 at 5:45 PM
GIG ALERT! Friday 5 December, we're throwing a Build Stuff afterparty at Alaus Namai in Vilnius! A night of live tech comedy video disco alt pop punk rock'n'roll with @dylanbeatt.ie, @rendle.dev, @eli.holderness.dev, @vagifabilov.bsky.social and Hannes Lowette.
Doors 19:00! FREE!
See you there! 🤘🏼
Doors 19:00! FREE!
See you there! 🤘🏼
Reposted by Mattias Karlsson
Tusk slips the knife in right at the end.
November 23, 2025 at 11:21 AM
Tusk slips the knife in right at the end.
🌊I am usually not a mono-repo person, but it works well for projects in maintenance mode. It turns PRs from a tsunami-style whack-a-mole problem into a calm wave when new SDKs and shared libraries are released. So "graduated" projects are automatically versioned, built, and shipped together.
#devops
#devops
November 23, 2025 at 2:07 PM
🌊I am usually not a mono-repo person, but it works well for projects in maintenance mode. It turns PRs from a tsunami-style whack-a-mole problem into a calm wave when new SDKs and shared libraries are released. So "graduated" projects are automatically versioned, built, and shipped together.
#devops
#devops
Note to self, apparently inbox zero is just an MX record away...
November 20, 2025 at 4:31 PM
Note to self, apparently inbox zero is just an MX record away...
Reposted by Mattias Karlsson
In this week #ReadingNotes: Cake v6.0.0 is out, AI Vision demo, Docker Desktop adds helpful debugging tools, and .NET 10 brings a ton of changes worth exploring. Plus a great podcast episode about cybersecurity c5m.ca/RN-674
Reading Notes #674
c5m.ca
November 17, 2025 at 12:41 PM
In this week #ReadingNotes: Cake v6.0.0 is out, AI Vision demo, Docker Desktop adds helpful debugging tools, and .NET 10 brings a ton of changes worth exploring. Plus a great podcast episode about cybersecurity c5m.ca/RN-674
Reposted by Mattias Karlsson
At this point, I'm wondering if they're just making it easier for @markrussinovich.bsky.social to quicker be productive with a fresh install of Windows🤔😎
Seriously great stuff! 🎉
Seriously great stuff! 🎉
Microsoft is adding Sysmon directly into Windows. The Sysinternals utility will make it easier for security teams to detect and respond to threats www.theverge.com/news/822023/...
Microsoft is adding Sysmon into Windows.
Sysmon was first released in 2014 as a utility for security analysis into the Windows Event Log. Built by Microsoft technical fellow Mark Russinovich with assistance from Thomas Garnier, Sysmon is now...
www.theverge.com
November 18, 2025 at 4:13 PM
At this point, I'm wondering if they're just making it easier for @markrussinovich.bsky.social to quicker be productive with a fresh install of Windows🤔😎
Seriously great stuff! 🎉
Seriously great stuff! 🎉
Did someone forget to replace the Varta battery in the lava lamps?🤔😎
#AmigansWillGetIt
#AmigansWillGetIt
November 18, 2025 at 2:06 PM
Did someone forget to replace the Varta battery in the lava lamps?🤔😎
#AmigansWillGetIt
#AmigansWillGetIt
CloudFlare successfully blocks AI too by being down...
November 18, 2025 at 1:30 PM
CloudFlare successfully blocks AI too by being down...
Reposted by Mattias Karlsson
Welcome boingball as #curl commit author 1420: https://github.com/curl/curl/pull/19578
AmigaOS: raise default tool stack size to 32768 bytes by boingball · Pull Request #19578 · curl/curl
This change increases the minimum stack cookie for the AmigaOS build of the curl tool. In testing, the older stack size of 16384 was causing curl to crash on heavy TLS loads These operations are si...
github.com
November 18, 2025 at 6:55 AM
Welcome boingball as #curl commit author 1420: https://github.com/curl/curl/pull/19578
My notepad.exe just spent 2 minutes logging in to AI before it became responsive... this is not the notepad I grew up with🗒️
#YouHadOneJob 😎
Maybe fortunate that Edit is coming back.
#YouHadOneJob 😎
Maybe fortunate that Edit is coming back.
November 18, 2025 at 7:02 AM
My notepad.exe just spent 2 minutes logging in to AI before it became responsive... this is not the notepad I grew up with🗒️
#YouHadOneJob 😎
Maybe fortunate that Edit is coming back.
#YouHadOneJob 😎
Maybe fortunate that Edit is coming back.
Reposted by Mattias Karlsson
Ready to integrate build automation into your applications? #dotNETRocks and Mattias Karlsson discuss integrating the Cake scripting experience into your .NET console applications. 🎧 msft.it/63323tM4VD
November 18, 2025 at 2:08 AM
Ready to integrate build automation into your applications? #dotNETRocks and Mattias Karlsson discuss integrating the Cake scripting experience into your .NET console applications. 🎧 msft.it/63323tM4VD
Reposted by Mattias Karlsson
That's pretty interesting...
Thanks to all who came to my .NET Conf session, you can watch it again at
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by dotnet
www.youtube.com
November 15, 2025 at 10:31 PM
That's pretty interesting...
Reposted by Mattias Karlsson
✨ NOW on Community Day at .NET Conf 2025 ✨
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
12:00 AM - 12:30 AM PST
Join us LIVE ➡️ msft.it/63329tJkdZ
Follow the conversation: #dotNETConf #DevOps #CSharp #GitHubActions
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
12:00 AM - 12:30 AM PST
Join us LIVE ➡️ msft.it/63329tJkdZ
Follow the conversation: #dotNETConf #DevOps #CSharp #GitHubActions
November 14, 2025 at 7:45 AM
✨ NOW on Community Day at .NET Conf 2025 ✨
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
12:00 AM - 12:30 AM PST
Join us LIVE ➡️ msft.it/63329tJkdZ
Follow the conversation: #dotNETConf #DevOps #CSharp #GitHubActions
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
12:00 AM - 12:30 AM PST
Join us LIVE ➡️ msft.it/63329tJkdZ
Follow the conversation: #dotNETConf #DevOps #CSharp #GitHubActions
Thanks to all who came to my .NET Conf session, you can watch it again at
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by dotnet
www.youtube.com
November 14, 2025 at 8:34 AM
Thanks to all who came to my .NET Conf session, you can watch it again at
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
www.youtube.com/watch?v=e7hk...
The presentation is available at dotnetconf2025.azurevoodoo.net & the sample github.com/azurevoodoo/...
Cake 6.0 & Sdk launch blog post cakebuild.net/blog/2025/11...
#dotnet #devops #csharp
Reposted by Mattias Karlsson
Waiting for "GitHub Actions DevOps Pipelines as Code using C# and Cake SDK" from @devlead.se which starts in 19 minutes!
www.youtube.com/watch?v=e7hk...
www.youtube.com/watch?v=e7hk...
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by dotnet
www.youtube.com
November 14, 2025 at 7:41 AM
Waiting for "GitHub Actions DevOps Pipelines as Code using C# and Cake SDK" from @devlead.se which starts in 19 minutes!
www.youtube.com/watch?v=e7hk...
www.youtube.com/watch?v=e7hk...
GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by dotnet
www.youtube.com
November 14, 2025 at 6:38 AM
Reposted by Mattias Karlsson
Here's my presentation for #dotnetconf 2025
"Taking .NET out of .NET Aspire - working with non-.NET applications"
www.youtube.com/watch?v=FcAi...
#dotnet #aspire #python #rust #nodejs #opentelemetry
"Taking .NET out of .NET Aspire - working with non-.NET applications"
www.youtube.com/watch?v=FcAi...
#dotnet #aspire #python #rust #nodejs #opentelemetry
Taking .NET out of .NET Aspire - working with non-.NET applications
YouTube video by dotnet
youtu.be
November 14, 2025 at 2:59 AM
Here's my presentation for #dotnetconf 2025
"Taking .NET out of .NET Aspire - working with non-.NET applications"
www.youtube.com/watch?v=FcAi...
#dotnet #aspire #python #rust #nodejs #opentelemetry
"Taking .NET out of .NET Aspire - working with non-.NET applications"
www.youtube.com/watch?v=FcAi...
#dotnet #aspire #python #rust #nodejs #opentelemetry
Reposted by Mattias Karlsson
Visual Studio 2022 Aspire users:
*UPDATE to the latest version of Aspire*
You're missing out on so much!
Latest Aspire supports .NET 8/9/10!
Run this in a terminal:
dotnet new install Aspire.ProjectTemplates --force
Open NuGet Package Manager & update all Aspire.* packages to version 13.
Enjoy!
*UPDATE to the latest version of Aspire*
You're missing out on so much!
Latest Aspire supports .NET 8/9/10!
Run this in a terminal:
dotnet new install Aspire.ProjectTemplates --force
Open NuGet Package Manager & update all Aspire.* packages to version 13.
Enjoy!
November 13, 2025 at 7:58 PM
Visual Studio 2022 Aspire users:
*UPDATE to the latest version of Aspire*
You're missing out on so much!
Latest Aspire supports .NET 8/9/10!
Run this in a terminal:
dotnet new install Aspire.ProjectTemplates --force
Open NuGet Package Manager & update all Aspire.* packages to version 13.
Enjoy!
*UPDATE to the latest version of Aspire*
You're missing out on so much!
Latest Aspire supports .NET 8/9/10!
Run this in a terminal:
dotnet new install Aspire.ProjectTemplates --force
Open NuGet Package Manager & update all Aspire.* packages to version 13.
Enjoy!