diff --git a/pkgs/development/libraries/haskell/HStringTemplate/default.nix b/pkgs/development/libraries/haskell/HStringTemplate/default.nix
index ddf5740d95a8..0d9c34b890e6 100644
--- a/pkgs/development/libraries/haskell/HStringTemplate/default.nix
+++ b/pkgs/development/libraries/haskell/HStringTemplate/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "HStringTemplate";
-  version = "0.6.2";
-  sha256 = "1d8ae847cb2b92f6d083ee1ed5db00c719e51fe43017d4289dea61335a116103";
+  version = "0.6.5";
+  sha256 = "e40b69e22900f381ca7fb080ea6e70d623e52e909bd7b896bc24e15c8e43252c";
   propagatedBuildInputs = [parsec time text utf8String parallel];
   meta = {
     description = "StringTemplate implementation in Haskell";
diff --git a/pkgs/development/libraries/haskell/HsSyck/default.nix b/pkgs/development/libraries/haskell/HsSyck/default.nix
new file mode 100644
index 000000000000..6b1681c6b372
--- /dev/null
+++ b/pkgs/development/libraries/haskell/HsSyck/default.nix
@@ -0,0 +1,10 @@
+{cabal}:
+
+cabal.mkDerivation (self : {
+  pname = "HsSyck";
+  version = "0.45";
+  sha256 = "67d02a892cd4535a02cc3ebf7b6e9f898a64428ec6783488875ac694d7fafb79";
+  meta = {
+    description = "Fast, lightweight YAML loader and dumper";
+  };
+})
diff --git a/pkgs/development/libraries/haskell/SMTPClient/default.nix b/pkgs/development/libraries/haskell/SMTPClient/default.nix
index 2da9beea5258..45c8d4aeaeed 100644
--- a/pkgs/development/libraries/haskell/SMTPClient/default.nix
+++ b/pkgs/development/libraries/haskell/SMTPClient/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "SMTPClient";
-  version = "1.0.2";
-  sha256 = "b835cebf22e9281778deeec3ceffeb95aa8ae9c0e1f97e8e9734cf5d87ecba5f";
+  version = "1.0.3";
+  sha256 = "c9907834565b5b712d50c50823513675b982c8b51e7b95680a3495eccb73ce66";
   propagatedBuildInputs = [hsemail network];
   meta = {
     description = "A simple SMTP client library";
diff --git a/pkgs/development/libraries/haskell/gitit/default.nix b/pkgs/development/libraries/haskell/gitit/default.nix
index 5bebdf7de358..4859a2ca0ee1 100644
--- a/pkgs/development/libraries/haskell/gitit/default.nix
+++ b/pkgs/development/libraries/haskell/gitit/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self : {
   pname = "gitit";
-  version = "0.7.3.5";
-  sha256 = "50cf6b853d439904e54884660eba6ffdc31b938e077fd0d9457fba972d4bde9f";
+  version = "0.7.3.8";
+  sha256 = "356c82604dcfe2eec4faeb36ee46546ea3e26738780723f457366b2e35f6211a";
   propagatedBuildInputs = [
     HStringTemplate happstackServer happstackUtil HTTP SHA cgi datetime
     filestore highlightingKate safe
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-data.nix b/pkgs/development/libraries/haskell/happstack/happstack-data.nix
index 9b18652642f9..de54b3ccac3e 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-data.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-data.nix
@@ -1,10 +1,14 @@
-{cabal, mtl, sybWithClass, HaXml, happstackUtil, binary}:
+{cabal, mtl, sybWithClass, sybWithClassInstancesText, HaXml,
+ happstackUtil, binary, text}:
 
 cabal.mkDerivation (self : {
     pname = "happstack-data";
-    version = "0.4.1";
-    sha256 = "0d1f96472a4e13b9a5218bce8bf819a50d1773b7e110141ab235d1d7701e39f6";
-    propagatedBuildInputs = [mtl sybWithClass HaXml happstackUtil binary];
+    version = "0.5.0.2";
+    sha256 = "03795c24acc2268f39d38f18dd6cbfb92893f7de88b0443219d582a1eabdacd5";
+    propagatedBuildInputs = [
+        mtl sybWithClass sybWithClassInstancesText HaXml
+        happstackUtil binary text
+    ];
     meta = {
         description = "Happstack data manipulation libraries";
         license = "BSD";
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-server.nix b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
index c1d66c0fabcd..461137c933dc 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-server.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
     pname = "happstack-server";
-    version = "0.4.1";
-    sha256 = "2a5d32b4e635160ffab8a90891d9c5ca0433969944ae4013ec8cebe25ba63658";
+    version = "0.5.0.2";
+    sha256 = "0184c835958bf9f29009a5aedd2c913bb1ad6ab60b80d9750849381c172dd6b6";
     propagatedBuildInputs = [
       HUnit HaXml MaybeT happstackData happstackUtil hslogger html
       mtl network parsec sendfile utf8String xhtml zlib
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-util.nix b/pkgs/development/libraries/haskell/happstack/happstack-util.nix
index 4ba0854d37a3..cab41882514d 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-util.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-util.nix
@@ -3,8 +3,8 @@
 
 cabal.mkDerivation (self : {
     pname = "happstack-util";
-    version = "0.4.1";
-    sha256 = "bb254140c30c39c420bc5a649da645f59df950f0a712c2dac4de1cc6572f05f9";
+    version = "0.5.0.2";
+    sha256 = "b6a84a55d6f7aec51095121a240bd6096b0df3c61c6fd25963d91190fcca4657";
     propagatedBuildInputs = [
       mtl hslogger HUnit QuickCheck strictConcurrency unixCompat
       SMTPClient
diff --git a/pkgs/development/libraries/haskell/highlighting-kate/default.nix b/pkgs/development/libraries/haskell/highlighting-kate/default.nix
index d6d69f398ba5..48de03486092 100644
--- a/pkgs/development/libraries/haskell/highlighting-kate/default.nix
+++ b/pkgs/development/libraries/haskell/highlighting-kate/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "highlighting-kate";
-  version = "0.2.6.2";
-  sha256 = "3ed163888d45d5bf5ee5c2931e894f6ca2eb167a79ac8274d7f57341c4c5dca7";
+  version = "0.2.7.1";
+  sha256 = "330c5fdc6b5dae62c12ee2455892319df12723346aa75401aea05ea0b24cf5ed";
   propagatedBuildInputs = [parsec pcreLight xhtml];
   meta = {
     description = "Syntax highlighting";
diff --git a/pkgs/development/libraries/haskell/pandoc/default.nix b/pkgs/development/libraries/haskell/pandoc/default.nix
index de77d27c8b03..57b6cec24b59 100644
--- a/pkgs/development/libraries/haskell/pandoc/default.nix
+++ b/pkgs/development/libraries/haskell/pandoc/default.nix
@@ -3,13 +3,12 @@
 
 cabal.mkDerivation (self : {
   pname = "pandoc";
-  version = "1.5.1.1";
-  sha256 = "6d2283cb618fcaea5ee5cb885ef6532bc34628b351f14a6bd85b098d7a4128d9";
+  version = "1.6";
+  sha256 = "9b825233293edf1ea414b0e7ea821d6a914711dc2c60546566ab5a97512b079b";
   propagatedBuildInputs = [
     mtl network parsec utf8String xhtml zipArchive HTTP xml texmath
   ];
   meta = {
     description = "Conversion between markup formats";
   };
-})  
-
+})
diff --git a/pkgs/development/libraries/haskell/sendfile/default.nix b/pkgs/development/libraries/haskell/sendfile/default.nix
index f35719d75f47..801257cc4e56 100644
--- a/pkgs/development/libraries/haskell/sendfile/default.nix
+++ b/pkgs/development/libraries/haskell/sendfile/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "sendfile";
-  version = "0.6.1";
-  sha256 = "c21b7f0f9a03a5e6d9b0691f5f0be9969d175f0514becdc199f0fd49097e51a2";
+  version = "0.6.2";
+  sha256 = "2d7bf7fdcae7e2ffa24bf70bc1bdc7ea4e6b1726f6cee63cd14c2eeb5545749a";
   propagatedBuildInputs = [network];
   meta = {
     description = "A portable sendfile library";
diff --git a/pkgs/development/libraries/haskell/strictConcurrency/default.nix b/pkgs/development/libraries/haskell/strictConcurrency/default.nix
index 5e90fd74e1a8..91ba2d948867 100644
--- a/pkgs/development/libraries/haskell/strictConcurrency/default.nix
+++ b/pkgs/development/libraries/haskell/strictConcurrency/default.nix
@@ -1,10 +1,10 @@
-{cabal, parallel}:
+{cabal, parallel, deepseq}:
 
 cabal.mkDerivation (self : {
   pname = "strict-concurrency";
-  version = "0.2.3";
-  sha256 = "21641b983b226e47727ff565184a5f2b312c7979ff487a5e478f5cfc82f78f18";
-  propagatedBuildInputs = [parallel];
+  version = "0.2.4.1";
+  sha256 = "0939212dd0cc3b9bd228dfbb233d9eccad22ca626752d9bad8026ceb0a5c1a89";
+  propagatedBuildInputs = [parallel deepseq];
   meta = {
     description = "Strict concurrency abstractions";
   };
diff --git a/pkgs/development/libraries/haskell/syb/syb-with-class-instances-text.nix b/pkgs/development/libraries/haskell/syb/syb-with-class-instances-text.nix
new file mode 100644
index 000000000000..f295e489402f
--- /dev/null
+++ b/pkgs/development/libraries/haskell/syb/syb-with-class-instances-text.nix
@@ -0,0 +1,11 @@
+{cabal, sybWithClass, text}:
+
+cabal.mkDerivation (self : {
+  pname = "syb-with-class-instances-text";
+  version = "0.0.1";
+  sha256 = "0e0aa90c02cbe76380274830be51e04cb3cc13d5ea5761ba5540779bd0c4d76e";
+  propagatedBuildInputs = [sybWithClass text];
+  meta = {
+    description = "Scrap Your Boilerplate With Class";
+  };
+})
diff --git a/pkgs/development/libraries/haskell/syb/syb-with-class.nix b/pkgs/development/libraries/haskell/syb/syb-with-class.nix
index e6ea92a169e3..dfd7d1946351 100644
--- a/pkgs/development/libraries/haskell/syb/syb-with-class.nix
+++ b/pkgs/development/libraries/haskell/syb/syb-with-class.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "syb-with-class";
-  version = "0.6";
-  sha256 = "8ee836b491b0f64ab0920d1a7314323439665a7b1afa78810cbbc95dc658bfdc";
+  version = "0.6.1";
+  sha256 = "72cf0a98862181fea81b77c11f35efd22eafa29107f3acd624fd08be68ed850b";
   meta = {
     description = "Scrap Your Boilerplate With Class";
   };
diff --git a/pkgs/development/libraries/haskell/texmath/default.nix b/pkgs/development/libraries/haskell/texmath/default.nix
index 66369cb60ba0..623f86ee3fd3 100644
--- a/pkgs/development/libraries/haskell/texmath/default.nix
+++ b/pkgs/development/libraries/haskell/texmath/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self : {
   pname = "texmath";
-  version = "0.2.0.3";
-  sha256 = "d355a298d28b9f5356926c2d2942f28ed07afa9d944cadfa47d8cdec73725b55";
+  version = "0.3.0.2";
+  sha256 = "8d2bb26fc5aab09ae92d2c194ec39acb4e04c054ad2caf1a1db0dc9b53b4b1d4";
   propagatedBuildInputs = [cgi json parsec xml];
   meta = {
     description = "Conversion of LaTeX math formulas to MathML";
diff --git a/pkgs/development/libraries/haskell/yst/default.nix b/pkgs/development/libraries/haskell/yst/default.nix
new file mode 100644
index 000000000000..30fa46b0ffb5
--- /dev/null
+++ b/pkgs/development/libraries/haskell/yst/default.nix
@@ -0,0 +1,14 @@
+{cabal, HStringTemplate, csv, pandoc, parsec, split, utf8String, xhtml, HsSyck}:
+
+cabal.mkDerivation (self : {
+  pname = "yst";
+  version = "0.2.3.2";
+  sha256 = "b857e70db67d708e2edb61a1d6bc4eaff3abd2bc252b3605f66bf1760da4da4b";
+  propagatedBuildInputs = [
+    HStringTemplate csv pandoc parsec split utf8String xhtml HsSyck
+  ];
+  meta = {
+    description =
+      "Builds a static website from templates and data in YAML or CSV files";
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 0bba75bb71d1..b33b842c9640 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -315,6 +315,8 @@ rec {
 
   hsemail = callPackage ../development/libraries/haskell/hsemail {};
 
+  HsSyck = callPackage ../development/libraries/haskell/HsSyck {};
+
   HStringTemplate = callPackage ../development/libraries/haskell/HStringTemplate {};
 
   hspread = callPackage ../development/libraries/haskell/hspread {};
@@ -491,6 +493,8 @@ rec {
 
   sybWithClass = callPackage ../development/libraries/haskell/syb/syb-with-class.nix {};
 
+  sybWithClassInstancesText = callPackage ../development/libraries/haskell/syb/syb-with-class-instances-text.nix {};
+
   SDLImage = callPackage ../development/libraries/haskell/SDL-image {
     inherit (pkgs) SDL_image;
   };
@@ -625,6 +629,8 @@ rec {
 
   xml = callPackage ../development/libraries/haskell/xml {};
 
+  yst = callPackage ../development/libraries/haskell/yst {};
+
   zipArchive = callPackage ../development/libraries/haskell/zip-archive {};
 
   zipper = callPackage ../development/libraries/haskell/zipper {};