diff --git a/pkgs/development/libraries/haskell/ghc-core/default.nix b/pkgs/development/libraries/haskell/ghc-core/default.nix
new file mode 100644
index 000000000000..4a36928173fb
--- /dev/null
+++ b/pkgs/development/libraries/haskell/ghc-core/default.nix
@@ -0,0 +1,13 @@
+{cabal, pcreLight, hscolour}:
+
+cabal.mkDerivation (self : {
+  pname = "ghc-core";
+  version = "0.4.3";
+  sha256 = "cdd6082ebc692087db781cb10194bbbf34a768b31eea0dcb78c73921c7047444";
+  propagatedBuildInputs = [pcreLight hscolour];
+  configureFlags = ''--constraint=base<4'';
+  meta = {
+    description = "Display GHC's core and assembly output in a pager";
+  };
+})  
+
diff --git a/pkgs/development/libraries/haskell/hscolour/default.nix b/pkgs/development/libraries/haskell/hscolour/default.nix
index 10d702cde78f..c22e110a7da3 100644
--- a/pkgs/development/libraries/haskell/hscolour/default.nix
+++ b/pkgs/development/libraries/haskell/hscolour/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "hscolour";
-  version = "1.10.1";
-  sha256 = "293f24b8373be1d70d9e5a4b8d3c527166ad645b4ac983c1a6fc5999c44a2d36";
+  version = "1.11";
+  sha256 = "ebe26f1911e8796de45350014404c5e31cc2701dae9a87ba58fe0d0d37a5d41b";
   meta = {
     description = "Colourise Haskell code";
   };
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 6c65fdd8d8a7..5b5c74f40af1 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -81,6 +81,10 @@ rec {
     inherit cabal mtl;
   };
 
+  ghcCore = import ../development/libraries/haskell/ghc-core {
+    inherit cabal pcreLight hscolour;
+  };
+
   ghcPaths = import ../development/libraries/haskell/ghc-paths {
     inherit cabal;
   };