anchor.diff:      // Build
       build "MathNet.Numerics.Data.sln"
   
  -    // Sign
  -    if hasBuildParam "sign" then
  +    // Sign (Windows only)
  +    if isWindows && hasBuildParam "sign" then
           let fingerprint = "5dbea70701b40cab1b2ca62c75401342b4f0f03a"
           let timeserver = "http://time.certum.pl/"
           sign fingerprint timeserver (!! "src/Data/Text/bin/Release/**/MathNet.Numerics.Data.Text.dll" ++ "src/Data/Matlab/bin/Release/**/MathNet.Numerics.Data.Matlab.dll" )
  
positive.code:     dataBundle |> zip "out/Data/packages/Zip" "out/Data/lib" (fun f -> f.Contains("MathNet.Numerics.Data."))
  
      // NUGET Pack
      pack "src/Data/Text/Text.csproj"
      pack "src/Data/Matlab/Matlab.csproj"
      CopyDir "out/Data/packages/NuGet" "src/Data/Text/bin/Release/" (fun n -> n.EndsWith(".nupkg"))
      CopyDir "out/Data/packages/NuGet" "src/Data/Matlab/bin/Release/" (fun n -> n.EndsWith(".nupkg"))
  
      )
  "Prepare" ==> "DataBuild"
  
negative.code:     CleanDir "out/packages/Zip"
      coreBundle |> zip "out/packages/Zip" "out/lib" (fun f -> f.Contains("MathNet.Numerics.") || f.Contains("System.Threading.") || f.Contains("FSharp.Core."))
  
      // NUGET Pack (Windows only)
      if isWindows then
          pack "MathNet.Numerics.sln"
          CopyDir "out/packages/NuGet" "src/Numerics/bin/Release/" (fun n -> n.EndsWith(".nupkg"))
          CopyDir "out/packages/NuGet" "src/FSharp/bin/Release/" (fun n -> n.EndsWith(".nupkg"))
  
      )
  "Prepare" ==> "Build"
  