Building and publishing an MSBuild Project SDK

[dotnetcadet]

I have a project I've been working on for a few years that I need to publish as an SDK. I want to publish it as an MSBuild Project SDK via nuget package which can then be referenced like so <Project Sdk="MySdk/{Version}"/>. I'm trying to include all the tooling, analyzers, and dll's within the SDK, but I'm having issues with packaging it properly. Documentation feels limited around this area, but I may be looking in the wrong place.

The project targets multiple .NET runtimes (net6.0;net8.0;net9.0) and has some custom build steps I'm doing with PowerShell which I want to convert to Tasks.

I've created a sample repo which is a slimmed down version of my repository structure: mysamplesdk. Using this project as a reference I would expect the contents of my nuget package to be like this:

├── analyzers
    └── LibraryC.Analyzer.dll
├── Sdk
    ├── Sdk.props
    └── Sdk.targets
├── targets
    └── [... additional targets and props referenced by my sdk props and targets]
├── tasks
    └── [... the dll's of the build tasks]
├── LibraryA.dll
├── LibraryB.dll
├── LibraryC.dll

When I reference the SDK in a simple class library propect I would expect it to resolve the targets and props for Microsoft.NET.Sdk as those are imported within the Sdk/Sdk.props and Sdk.targets of my own Sdk.

Simply, I'm trying to figure out how you properly build & publish the SDK?