anchor.diff:  
       [<Test>]
       let ``13 Add reference to external library`` () =
  -            
  +        if not isWindowsProcess then () else // fsc.exe is difficult to set up on linux
           let code = """
               module StaticAssemblyTest
   
  
positive.code: 
  open System
  open System.Reflection
  open System.IO
  
  open NUnit.Framework
  
negative.code: [<TestFixture>]
  module FsiTests =
  
      let isX64Process = RuntimeInformation.ProcessArchitecture = Architecture.X64
  
      let isWindowsProcess = RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
  
      let getFullPath path = 
          let fullPath = Path.Combine(__SOURCE_DIRECTORY__, "..", "..", path) |> Path.GetFullPath
  