anchor.diff:      propagatedBuildInputs = [
         spacelog
       ];
  -
  -    preBuild = ''
  -      find go/src/$goPackagePath -name \*.go | xargs sed -i 's,spacemonkeygo/openssl,10gen/openssl,g'
  -    '';
     };
   
     opentracing-go = buildFromGitHub {
  
positive.code:       gopass
        mgo_v2
        openssl
        termbox-go
        tomb_v2
      ];
  
      # Mongodb incorrectly names all of their binaries main
      # Let's work around this with our own installer
  
negative.code: 
        grep -q 'SetHooks(' lib/utils/cli.go
        sed -i 's,SetHooks(,Hooks = (,' lib/utils/cli.go
  
        grep -q 'uuid.New()$' lib/utils/utils.go
        sed -i 's,uuid.New()$,uuid.New().String(),' lib/utils/utils.go
      '';
      preFixup = ''
        test -f "$bin"/bin/tctl
  