Expr.Types.Annotated: AnnE: add explanation

That is my understanding, it can be wrong (but hey, there were no better there)!
haskell-nix · May 18, 2021 · 1ed4d13 · 1ed4d13
1 parent 46a82e3
commit 1ed4d13
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/Nix/Expr/Types/Annotated.hs b/src/Nix/Expr/Types/Annotated.hs
@@ -85,6 +85,8 @@ data Ann ann a = Ann
 type AnnF ann f = Compose (Ann ann) f
 
 -- | Pattern: @Fix (Compose (Ann _ _))@.
+-- Fix composes units of (annotations & the annotated) into one object.
+-- Giving annotated expression.
 pattern AnnE
   :: forall ann (g :: * -> *)
   . ann