@@ -129,6 +129,7 @@ import qualified Data.Foldable as F
129129-- We can use a "Storable" constraint in the Array type and the Constraint can
130130-- be automatically provided to a function that pattern matches on the Array
131131-- type. However, it has huge performance cost, so we do not use it.
132+-- XXX Can this cost be alleviated in GHC-8.10 specialization fix?
132133--
133134-- XXX Another way to not require the Storable constraint in array operations
134135-- is to store the elemSize in the array at construction and use that instead