diff --git a/pkgs/development/haskell-modules/lib.nix b/pkgs/development/haskell-modules/lib.nix
index 81cf298e0e61..30d82d3efc93 100644
--- a/pkgs/development/haskell-modules/lib.nix
+++ b/pkgs/development/haskell-modules/lib.nix
@@ -111,6 +111,4 @@ rec {
   overrideSrc = drv: { src, version ? drv.version }:
     overrideCabal drv (_: { inherit src version; editedCabalFile = null; });
 
-  hasNoDataOutput = drv: overrideCabal drv (drv: { hasDataDir = false; });
-  hasNoDocOutput = drv: overrideCabal drv (drv: { hasDocDir = false; });
 }