diff --git a/pkgs/development/libraries/haskell/monadlab/default.nix b/pkgs/development/libraries/haskell/monadlab/default.nix
deleted file mode 100644
index b391e3a749f..00000000000
--- a/pkgs/development/libraries/haskell/monadlab/default.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{cabal, parsec}:
-
-cabal.mkDerivation (self : {
-  pname = "MonadLab";
-  version = "0.0.1";
-  sha256 = "06fdfkm79653s08ykcf3gl84cf2jl7h3vj00jv3khji5448fwsaw";
-  meta = {
-    description = "Automatically generate layered monads.";
-  };
-  propagatedBuildInputs = [parsec];
-})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 0178eb1fbfa..8536c743942 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -763,8 +763,6 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   monadControl = callPackage ../development/libraries/haskell/monad-control {};
 
-  monadlab = callPackage ../development/libraries/haskell/monadlab {};
-
   monadLoops = callPackage ../development/libraries/haskell/monad-loops {};
 
   monadPar = callPackage ../development/libraries/haskell/monad-par {};