A compatibility library for the RTS Callstack annotations introduced in GHC 9.14. . Allows you to use the stack annotations without having to worry about older GHC versions. As stack annotations rely on the newly introduced AnnFrame stack frame type, this library is operationally a NO-OP for GHC versions below 9.14. . For GHC <9.14, this library exposes an API identical to GHC.Stack.Annotation.Experimental including data types and type classes for writing StackAnnotation instances, without worrying about backwards compatibility. For GHC >=9.14, this library re-exports the API of GHC.Stack.Annotation.Experimental.