anchor.diff:                  |> Seq.toList
   
               let officialName = 
  -                doc.SelectNodes(sprintf "//%s:metadata/%s:id" ns ns, manager)
  +                doc.SelectNodes "//*[local-name() = 'metadata']/*[local-name() = 'id']"
                   |> Seq.cast<XmlNode>
                   |> Seq.head
                   |> fun node -> node.InnerText
   
               let references =
  -                if List.isEmpty [ for node in doc.SelectNodes(sprintf "//%s:references" ns, manager) -> node] then [] else
  -                    [ for node in doc.SelectNodes(sprintf "//%s:reference" ns, manager) -> 
  +                if List.isEmpty [ for node in doc.SelectNodes "//*[local-name() = 'references']" -> node] then [] else
  +                    [ for node in doc.SelectNodes "//*[local-name() = 'reference']" -> 
                           node.Attributes.["file"].InnerText]
               
               let frameworkAssemblyReferences =
  -                if List.isEmpty [ for node in doc.SelectNodes(sprintf "//%s:frameworkAssemblies" ns, manager) -> node] then [] else
  -                    [ for node in doc.SelectNodes(sprintf "//%s:frameworkAssembly" ns, manager) do
  +                if List.isEmpty [ for node in doc.SelectNodes "//*[local-name() = 'frameworkAssemblies']"  -> node] then [] else
  +                    [ for node in doc.SelectNodes "//*[local-name() = 'frameworkAssembly']" do
                           let name =  node.Attributes.["assemblyName"].InnerText
                           for framework in node.Attributes.["targetFramework"].InnerText.Split([|','; ' '|],System.StringSplitOptions.RemoveEmptyEntries) do
                               match FrameworkIdentifier.Extract framework with
  
positive.code:       Dependencies : (string * VersionRequirement) list
        OfficialName : string
        FrameworkAssemblyReferences : FrameworkAssemblyReference list }
      static member KnownNamespaces =
          ["ns1","http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd"
           "ns2","http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd"
           "ns3","http://schemas.microsoft.com/packaging/2013/01/nuspec.xsd"
           "ns4","http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd"
           "ns5","http://schemas.microsoft.com/packaging/2011/10/nuspec.xsd"]
  
      static member All = { References = NuspecReferences.All; Dependencies = []; FrameworkAssemblyReferences = []; OfficialName = "" }
      static member Explicit references = { References = NuspecReferences.Explicit references; Dependencies = []; FrameworkAssemblyReferences = []; OfficialName = "" }
  
negative.code:             { References = if references = [] then NuspecReferences.All else NuspecReferences.Explicit references
                Dependencies = dependencies
                OfficialName = officialName
                FrameworkAssemblyReferences = frameworkAssemblyReferences }
  