diff --git a/srcpkgs/stack/patches/datakinds.patch b/srcpkgs/stack/patches/datakinds.patch
new file mode 100644
index 00000000000..1c06480515f
--- /dev/null
+++ b/srcpkgs/stack/patches/datakinds.patch
@@ -0,0 +1,14 @@
+--- src/Stack/Storage/User.hs	2020-10-15 15:51:28.000000000 +0200
++++ src/Stack/Storage/User.hs	2020-12-06 20:51:06.632607164 +0100
+@@ -1,3 +1,4 @@
++{-# LANGUAGE DataKinds #-}
+ {-# LANGUAGE DerivingStrategies #-}
+ {-# LANGUAGE FlexibleInstances #-}
+ {-# LANGUAGE GADTs #-}
+--- src/Stack/Storage/Project.hs	2020-10-15 15:51:28.000000000 +0200
++++ src/Stack/Storage/Project.hs	2020-12-06 21:55:21.349484738 +0100
+@@ -1,3 +1,4 @@
++{-# LANGUAGE DataKinds #-}
+ {-# LANGUAGE DerivingStrategies #-}
+ {-# LANGUAGE FlexibleInstances #-}
+ {-# LANGUAGE GADTs #-}