diff --git a/pkgs/development/libraries/haskell/engine-io-snap/default.nix b/pkgs/development/libraries/haskell/engine-io-snap/default.nix
new file mode 100644
index 000000000000..fdef92cfab86
--- /dev/null
+++ b/pkgs/development/libraries/haskell/engine-io-snap/default.nix
@@ -0,0 +1,18 @@
+{ cabal, attoparsecEnumerator, engineIo, snapCore
+, unorderedContainers, websockets, websocketsSnap
+}:
+
+cabal.mkDerivation (self: {
+  pname = "engine-io-snap";
+  version = "1.0.0";
+  sha256 = "152hz2b9zbmjpp517g6kp7fs7kbvyil28dp6djqjlmp9fqkgckap";
+  buildDepends = [
+    attoparsecEnumerator engineIo snapCore unorderedContainers
+    websockets websocketsSnap
+  ];
+  meta = {
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.ocharles ];
+  };
+})
diff --git a/pkgs/development/libraries/haskell/engine-io/default.nix b/pkgs/development/libraries/haskell/engine-io/default.nix
new file mode 100644
index 000000000000..fc236cec2072
--- /dev/null
+++ b/pkgs/development/libraries/haskell/engine-io/default.nix
@@ -0,0 +1,21 @@
+{ cabal, aeson, async, attoparsec, base64Bytestring, either
+, monadLoops, mwcRandom, stm, text, transformers
+, unorderedContainers, vector, websockets
+}:
+
+cabal.mkDerivation (self: {
+  pname = "engine-io";
+  version = "1.0.0";
+  sha256 = "08gxhf9ihz32z5ayabxw7mn14rib2kyawrvfqzbdkw8vxgjiasv9";
+  buildDepends = [
+    aeson async attoparsec base64Bytestring either monadLoops mwcRandom
+    stm text transformers unorderedContainers vector websockets
+  ];
+  meta = {
+    homepage = "http://github.com/ocharles/engine.io";
+    description = "A Haskell implementation of Engine.IO";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.ocharles ];
+  };
+})
diff --git a/pkgs/development/libraries/haskell/socket-io/default.nix b/pkgs/development/libraries/haskell/socket-io/default.nix
new file mode 100644
index 000000000000..65179c1dbaf6
--- /dev/null
+++ b/pkgs/development/libraries/haskell/socket-io/default.nix
@@ -0,0 +1,18 @@
+{ cabal, aeson, attoparsec, engineIo, mtl, stm, text, transformers
+, unorderedContainers, vector
+}:
+
+cabal.mkDerivation (self: {
+  pname = "socket-io";
+  version = "1.0.0";
+  sha256 = "1xvj2x6nr14wna0plivzbzkca2y4xw6bxhvc5mqjh664197r9jsx";
+  buildDepends = [
+    aeson attoparsec engineIo mtl stm text transformers
+    unorderedContainers vector
+  ];
+  meta = {
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.ocharles ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 2c002bfd039a..a0780e29b1b0 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -702,6 +702,9 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   encoding = callPackage ../development/libraries/haskell/encoding {};
 
+  engineIo = callPackage ../development/libraries/haskell/engine-io {};
+  engineIoSnap = callPackage ../development/libraries/haskell/engine-io-snap {};
+
   enumerator = callPackage ../development/libraries/haskell/enumerator {};
 
   enummapset = callPackage ../development/libraries/haskell/enummapset {};
@@ -2068,6 +2071,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   socks = callPackage ../development/libraries/haskell/socks {};
 
+  socketIo = callPackage ../development/libraries/haskell/socket-io {};
+
   sparse = callPackage ../development/libraries/haskell/sparse {};
 
   spawn = callPackage ../development/libraries/haskell/spawn {};