Should nethost be migrtated from coreclr to nethost and hostfxr libraries?

[MAAC-2018]

I currently have a coreclr host and that interops with NET6.0.18 without any issue.
Microsoft site indicates that coreclr is obsolete and any host using 3.0 or greater should use nethost and hostfxr
https://learn.microsoft.com/en-us/dotnet/core/tutorials/netcore-hosting
Is there really a need to migrate?

[teo-tsirpanis]

c.c. @vitek-karas

[vitek-karas]

We consider the coreclr.dll to be an internal implementation detail. We do know that it's used by some hosts, but we actively discourage people from doing that. And we may decide to break it in the future - for example #52688 could break your host (depends on how you're using coreclr) if we decide to do it.

There are also functional reasons for this - for example AssemblyDependencyResolver will not work if the runtime is hosted without hostfxr/hostpolicy.

So in short I would suggest you strongly consider moving your code to the hostfxr APIs. It should also simplify your code as hosting the runtime directly usually needs more setup code.

[MAAC-2018]

Thanks, for the feedback, much appreciated.