1 files changed, 8 insertions, 0 deletions
diff --git a/src/Data/Array/Nested/Internal.hs b/src/Data/Array/Nested/Internal.hs
index ab5f015..ededb60 100644
--- a/src/Data/Array/Nested/Internal.hs
+++ b/src/Data/Array/Nested/Internal.hs
@@ -45,6 +45,7 @@ import Data.Bifunctor (first)
 import Data.Coerce (coerce, Coercible)
 import Data.Foldable as Foldable (toList)
 import Data.Functor.Const
+import Data.Int
 import Data.Kind
 import Data.List.NonEmpty (NonEmpty(..))
 import Data.Monoid (Sum(..))
@@ -418,6 +419,7 @@ class PrimElt a where
 
 -- [PRIMITIVE ELEMENT TYPES LIST]
 instance PrimElt Int
+instance PrimElt Int64
 instance PrimElt Double
 instance PrimElt ()
 
@@ -444,6 +446,8 @@ data instance Mixed sh (Primitive a) = M_Primitive !(IShX sh) !(XArray sh a)
 -- [PRIMITIVE ELEMENT TYPES LIST]
 newtype instance Mixed sh Int = M_Int (Mixed sh (Primitive Int))
   deriving (Show)
+newtype instance Mixed sh Int64 = M_Int64 (Mixed sh (Primitive Int64))
+  deriving (Show)
 newtype instance Mixed sh Double = M_Double (Mixed sh (Primitive Double))
   deriving (Show)
 newtype instance Mixed sh () = M_Nil (Mixed sh (Primitive ()))  -- no content, orthotope optimises this (via Vector)
@@ -467,6 +471,7 @@ newtype instance MixedVecs s sh (Primitive a) = MV_Primitive (VS.MVector s a)
 
 -- [PRIMITIVE ELEMENT TYPES LIST]
 newtype instance MixedVecs s sh Int = MV_Int (VS.MVector s Int)
+newtype instance MixedVecs s sh Int64 = MV_Int64 (VS.MVector s Int64)
 newtype instance MixedVecs s sh Double = MV_Double (VS.MVector s Double)
 newtype instance MixedVecs s sh () = MV_Nil (VS.MVector s ())  -- no content, MVector optimises this
 -- etc.
@@ -482,6 +487,7 @@ type family ShapeTree a where
   ShapeTree (Primitive _) = ()
   -- [PRIMITIVE ELEMENT TYPES LIST]
   ShapeTree Int = ()
+  ShapeTree Int64 = ()
   ShapeTree Double = ()
   ShapeTree () = ()
 
@@ -631,6 +637,7 @@ instance Storable a => Elt (Primitive a) where
 
 -- [PRIMITIVE ELEMENT TYPES LIST]
 deriving via Primitive Int instance Elt Int
+deriving via Primitive Int64 instance Elt Int64
 deriving via Primitive Double instance Elt Double
 deriving via Primitive () instance Elt ()
 
@@ -641,6 +648,7 @@ instance Storable a => KnownElt (Primitive a) where
 
 -- [PRIMITIVE ELEMENT TYPES LIST]
 deriving via Primitive Int instance KnownElt Int
+deriving via Primitive Int64 instance KnownElt Int64
 deriving via Primitive Double instance KnownElt Double
 deriving via Primitive () instance KnownElt ()