anchor.diff:          DoConfigureOnly env && DoRunOnly env
   
       let DoInit (env: CommandEnvironment) =
  -        let bootScript = env.CurrentDirectory +/ "conf.fsx"
  -        let buildScript = env.CurrentDirectory +/ "build.fsx"
  +        let bootScript = env.CurrentDirectory @@ "conf.fsx"
  +        let buildScript = env.CurrentDirectory @@ "build.fsx"
           if File.Exists bootScript || File.Exists buildScript then
               env.SendMessage("Already exists: conf.fsx or build.fsx")
               false
  
positive.code: open System.Text
  open NuGet
  
  let private ( +/ ) a b = Path.Combine(a, b)
  
  /// Specifies which version of the NuGet package to install.
  type NuGetVersion =
  
      /// Pick the latest available version.
      | Latest
  
      /// Pick the latest available version, including pre-release versions.
      | LatestPreRelease
  
      /// Pick the given semantic version, such as "2.1.170-alpha".
      | SemanticVersion of string
  
  /// Specifies NuGet package dependencies.
  type NuGetDependency =
  
negative.code:             w.Write("#r ")
              writeString path
              w.WriteLine()
          writeRef (fakeDir @@ "NuGet.Core.dll")
          writeRef (fakeDir @@ "FakeLib.dll")
          for r in refs do
              writeRef r
          w.ToString()
  