stdin

stdin

diff --git a/pkgs/development/haskell-modules/lib.nix b/pkgs/development/haskell-modules/lib.nix
index 246a9f3..eb05ace 100644
--- a/pkgs/development/haskell-modules/lib.nix
+++ b/pkgs/development/haskell-modules/lib.nix
@@ -8,8 +8,8 @@ rec {
     overrideScope = scope: overrideCabal (drv.overrideScope scope) f;
   };
 
-  doHaddock = drv: overrideCabal drv (drv: { doHaddock = true; });
-  dontHaddock = drv: overrideCabal drv (drv: { doHaddock = false; });
+  doHaddock = drv: drv.overrideAttrs (attrs: { doHaddock = true; });
+  dontHaddock = drv: drv.overrideAttrs (attrs: { doHaddock = false; });
 
   doJailbreak = drv: overrideCabal drv (drv: { jailbreak = true; });
   dontJailbreak = drv: overrideCabal drv (drv: { jailbreak = false; });