anchor.diff:  let copyright = "Copyright 2019"
   let mutable dotnetExePath = "dotnet"
   
  -let envRequired k =
  -  let v = Environment.GetEnvironmentVariable k
  -  if isNull v then failwithf "Missing environment key '%s'." k
  -  v
  +let githubToken = lazy(Environment.environVarOrFail "GITHUB_TOKEN")
  +let nugetToken = lazy(Environment.environVarOrFail "NUGET_TOKEN")
   
   BuildServer.install [
     Travis.Installer
  
positive.code: #load "paket-files/build/eiriktsarpalis/snippets/SlnTools/SlnTools.fs"
  #if !FAKE
  #r "netstandard"
  #r "facades/netstandard"
  #endif
  
  open System
  
negative.code:     Git.Branches.tag "" release.NugetVersion
      Git.Branches.pushTag "" remote release.NugetVersion
  
      githubToken.Value
      |> GitHub.createClientWithToken
      |> GitHub.draftNewRelease gitOwner gitName release.NugetVersion
                                release.SemVer.PreRelease.IsSome release.Notes
  