@@ -902,6 +902,9 @@ executable EchoServer
903 , base >= 4.8 && < 5
903 , base >= 4.8 && < 5
904 , network >= 2.6 && < 4
904 , network >= 2.6 && < 4
907+ transformers >= 0.4 && < 0.6
906 buildable: False
909 buildable: False
@@ -915,6 +918,9 @@ executable FileSinkServer
916 , base >= 4.8 && < 5
919 , base >= 4.8 && < 5
917 , network >= 2.6 && < 4
920 , network >= 2.6 && < 4
923+ transformers >= 0.4 && < 0.6
919 buildable: False
925 buildable: False