[Kwpolska]

It misses a ton of functionality compared to the current .NET (Core), but it does not miss much compared to .NET Framework 4.8. The reason why source generators require it is because they may be run by Visual Studio, which is built on top of the classic .NET Framework. .NET Standard 2.0 is a good trade-off IMO if you need to support both the classic Framework and the modern .NET.

[Ygg2]

It missed ton of functionality compared to C# in 2022 (when I last used it). It's about as old as Java 8.

[neonsunset]

If setting <LangVersion> to 12 and maybe doing `dotnet add package PolySharp` was too challenging then the source generators API is probably not for you. It's not a language issue :)