add haskellPackages.midi

pkgs/development/libraries/haskell/midi/default.nix

@@ -0,0 +1,21 @@
+{ cabal, binary, eventList, explicitException, monoidTransformer
+, nonNegative, QuickCheck, random, transformers, utilityHt
+}:
+
+cabal.mkDerivation (self: {
+  pname = "midi";
+  version = "0.2.1";
+  sha256 = "0i767y0835979s9i3wm8qwzh2awhhmfvhc5zvq2lkn8xlsp3wa6y";
+  isLibrary = true;
+  isExecutable = true;
+  buildDepends = [
+    binary eventList explicitException monoidTransformer nonNegative
+    QuickCheck random transformers utilityHt
+  ];
+  meta = {
+    homepage = "http://www.haskell.org/haskellwiki/MIDI";
+    description = "Handling of MIDI messages and files";
+    license = "GPL";
+    platforms = self.ghc.meta.platforms;
+  };
+})

pkgs/top-level/haskell-packages.nix

@@ -1510,6 +1510,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   mersenneRandomPure64 = callPackage ../development/libraries/haskell/mersenne-random-pure64 {};
 
+  midi = callPackage ../development/libraries/haskell/midi {};
+
   minimorph = callPackage ../development/libraries/haskell/minimorph {};
 
   miniutter = callPackage ../development/libraries/haskell/miniutter {};