import DataCon ( DataCon, dataConWorkId )
import BasicTypes ( Activation )
import VarSet
+import FastString
import Outputable
\end{code}
\end{code}
\begin{code}
-type RuleName = FAST_STRING
+type RuleName = FastString
type IdCoreRule = (Id,CoreRule) -- Rules don't have their leading Id inside them
data CoreRule