XSharpDev
XSharp Repository for the Compiler source code
...This compiler will translate some of the Roslyn Namespaces from CSharp into XSharp to prevent name conflicts when assemblies of both origins are in memory at the same time. Make sure you have VS 2019 or 2017 installed. The preferred edition is Enterprise. Make sure you have Java JDK on your machine and that you have the Java binaries folder in your Path. If you do not have Vs 2019 Enterprise you can set 2 environment variables to the VS version and edition you have installed.