diff --git a/pkgs/development/libraries/haskell/bytestring-mmap/default.nix b/pkgs/development/libraries/haskell/bytestring-mmap/default.nix
new file mode 100755
index 00000000000..c51db4e6d23
--- /dev/null
+++ b/pkgs/development/libraries/haskell/bytestring-mmap/default.nix
@@ -0,0 +1,12 @@
+{cabal} :
+
+cabal.mkDerivation (self : {
+  pname = "bytestring-mmap";
+  version = "0.2.2";
+  sha256 = "1bv9xf4cpph1cbdwv6rbmq8ppi5wjpgd97lwln5l9ky5rvnaxg3v";
+  meta = {
+    homepage = "http://code.haskell.org/~dons/code/bytestring-mmap/";
+    description = "mmap support for strict ByteStrings";
+    license = self.stdenv.lib.licenses.bsd3;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index e77dbe5887a..e3907401f6a 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -402,6 +402,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   bytestringNums = callPackage ../development/libraries/haskell/bytestring-nums {};
 
+  bytestringMmap = callPackage ../development/libraries/haskell/bytestring-mmap {};
+
   bytestringTrie = callPackage ../development/libraries/haskell/bytestring-trie {};
 
   cabal2nix = callPackage ../development/libraries/haskell/cabal2nix {};