anchor.diff:                      let projectInfoManager = this.ComponentModel.DefaultExportProvider.GetExport<FSharpProjectOptionsManager>().Value
                       let solution = this.GetServiceAsync(typeof<SVsSolution>).Result
                       let solution = solution :?> IVsSolution
  +                    let solutionEvents = FSharpSolutionEvents(projectInfoManager)
                       let rdt = this.GetServiceAsync(typeof<SVsRunningDocumentTable>).Result
                       let rdt = rdt :?> IVsRunningDocumentTable
  +
  +                    solutionEventsOpt <- Some(solutionEvents)
  +                    solution.AdviseSolutionEvents(solutionEvents) |> ignore
   
                       let projectContextFactory = this.ComponentModel.GetService<IWorkspaceProjectContextFactory>()
                       let workspace = this.ComponentModel.GetService<VisualStudioWorkspace>()
  
positive.code:             vfsiToolWindow <- this.FindToolWindow(typeof<Microsoft.VisualStudio.FSharp.Interactive.FsiToolWindow>, 0, true) :?> Microsoft.VisualStudio.FSharp.Interactive.FsiToolWindow
          vfsiToolWindow :> Microsoft.VisualStudio.FSharp.Interactive.ITestVFSI
  
      // FSI-LINKAGE-POINT: unsited init
      do 
          Microsoft.VisualStudio.FSharp.Interactive.Hooks.fsiConsoleWindowPackageCtorUnsited (this :> Package)
  
negative.code:             upcast { new FSharpCheckerWorkspaceService with
                  member this.Checker = checkerProvider.Checker
                  member this.FSharpProjectOptionsManager = projectInfoManager }
  
  [<Sealed>]
  type private FSharpSolutionEvents(projectManager: FSharpProjectOptionsManager) =
  
      interface IVsSolutionEvents with
  
          member __.OnAfterCloseSolution(_) =
              projectManager.Checker.ClearLanguageServiceRootCachesAndCollectAndFinalizeAllTransients()
              VSConstants.S_OK
  
          member __.OnAfterLoadProject(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnAfterOpenProject(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnAfterOpenSolution(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnBeforeCloseProject(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnBeforeCloseSolution(_) = VSConstants.E_NOTIMPL
  
          member __.OnBeforeUnloadProject(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnQueryCloseProject(_, _, _) = VSConstants.E_NOTIMPL
  
          member __.OnQueryCloseSolution(_, _) = VSConstants.E_NOTIMPL
  
          member __.OnQueryUnloadProject(_, _) = VSConstants.E_NOTIMPL       
  
  [<Microsoft.CodeAnalysis.Host.Mef.ExportWorkspaceServiceFactory(typeof<EditorOptions>, Microsoft.CodeAnalysis.Host.Mef.ServiceLayer.Default)>]
  type internal FSharpSettingsFactory
  