anchor.diff:  open Fake
   open Fake.AssemblyInfoFile
   
  -let private depsFile = Paket.DependenciesFile.ReadFromFile "./paket.dependencies"
  -let private lockFile = Paket.LockFile.LoadFrom "./paket.lock"
   let private mainGroupName = Paket.Domain.GroupName "Main"
  -let private mainGroup = depsFile.GetGroup mainGroupName
   
   let GetSemVerOf pkgName =
  +    let lockFile = Paket.LockFile.LoadFrom "./paket.lock"
       lockFile
           .GetGroup(mainGroupName)
           .GetPackage(Paket.Domain.PackageName pkgName)
  
positive.code:         DeleteDirs dirtyDirs
  
      Target "WS-Update" <| fun () ->
          let needsUpdate =
              mainGroup.Packages
              |> Seq.exists (fun { Name = pkg } ->
  
negative.code: 
  type Args =
      {
          GetVersion : unit -> Paket.SemVerInfo
          BuildAction : BuildAction
          Attributes : seq<Attribute>
          StrongName : bool
  