That's true that I put an explicit emphasis on C# But let's face it, the whole CoreFX library is in C#, Roslyn Compiler is in C#... the line is already blurred

That's true that I put an explicit emphasis on C# But let's face it, the whole CoreFX library is in C#, Roslyn Compiler is in C#... the line is already blurred So while the CLR is not language specific (like the JVM is not Java specific), rewriting the runtime with the most prominent language used for the underlying platform sounds an acceptable implicit emphasis ;)