anchor.diff:      solutionFile
       |> MsBuild.build (fun opts ->
           { opts with
  +            RestorePackagesFlag = true
               Targets = ["Rebuild"]
               Verbosity = Some MSBuildVerbosity.Minimal
               Properties =
  
positive.code: let restore proj =
      let opts =
          { DotnetOptions.Default with
              WorkingDirectory = __SOURCE_DIRECTORY__    }
      (Dotnet  opts (sprintf "restore %s" (Path.getFullName proj))).Messages |> Seq.iter trace
  
  Target.Create "Build" (fun _ ->
  
negative.code:             proj
              |> MsBuild.build (fun opts ->
                  { opts with
                      RestorePackagesFlag = true
                      Targets = ["Rebuild"]
                      Verbosity = Some MSBuildVerbosity.Minimal
                      Properties =
                        [ "VisualStudioVersion", "15.0"
                          "Verbosity", "Minimal"
                          "OutputPath", "tests/bin"
                          "Configuration", "Debug" ]}
              )
          )
  
  