azure devops - C# 6.0 TFS Builds

Question

I'm trialing the new features of C# 6.0 within Visual Studio 2015 CTP and my project is failing to build in TFS 2013 and Visual Studio Online.

I understand that Visual Studio uses the new Roslyn compiler, which replaces the native .NET one, and the TFS build agent therefore is unable to compile.

My question is how do I install Roslyn on the build agent (and within Visual Studio Online) and tell the build agent to use this compiler over native?

Answer 1

For the compilation step, you have a couple of options:

1. You can reference the Microsoft.Net.Compilers NuGet package on a per-project basis to use that version of the compilers.
2. You can install the Microsoft Build Tools package that is part of the VS 2015 CTP package without installing all of VS.

However, as @MrHinsh notes, these approaches may leave you missing other parts of your toolchain.