anchor.diff:  
   let tryGetFableCoreJsDir projFile =
       let paketDir = tryFindPaketDirFromProject projFile
  -    tryGetFableCorePkgDir paketDir projFile
  +    let targetFramework = getTargetFramework None projFile
  +    tryGetFableCorePkgDir paketDir targetFramework projFile
       |> Option.map (fun corePkgDir -> IO.Path.Combine(corePkgDir, "fable-core"))
   
   // let checkFableCoreVersion paketDir projFile =
  
positive.code:             Directory.GetDirectories(IO.Path.Combine(pkgDir, "lib"))
              |> Seq.map Path.GetFileName
              |> Seq.sortDescending
              |> Seq.tryFind (fun framework ->
                  framework.StartsWith(targetFramework.Framework) && framework <= targetFramework.Full)
              |> function
                  | Some framework -> IO.Path.Combine(pkgDir, "lib", framework, refName + ".dll") |> PaketRef.Dll
                  | None -> failwithf "Cannot match target %s for library %s" targetFramework.Full refName)
  
  let private readPaketProjectRefLines projFile =
      let projDir = Path.GetDirectoryName(projFile)
      let projFileName = Path.GetFileName(projFile)
      let paketRefs = IO.Path.Combine(projDir, "obj", projFileName + ".references")
      if File.Exists(paketRefs)
      then File.ReadLines(paketRefs)
      else upcast [||] // TODO: Fail if .fsproj.references file not found?
  
  let getPaketRefs paketDir targetFramework projFile: PaketRef list =
      match paketDir with
      | None -> []
      | Some paketDir ->
          let paketRefs =
              readPaketProjectRefLines projFile
              |> Seq.choose (tryGetPaketRef paketDir targetFramework)
              |> Seq.toList
          // paketRefs
  
negative.code: 
  let getProjectOptionsFromFsproj (projFile: string) =
      let xmlDoc = XDocument.Load(projFile)
      let targetFramework = getTargetFramework (Some xmlDoc) projFile
      let paketDir = tryFindPaketDirFromProject projFile
      // checkFableCoreVersion paketDir projFile
      let rec crackProjects (acc: CrackedFsproj list) projFile xmlDoc =
  