diff --git a/pkgs/development/libraries/haskell/HaskellForMaths/default.nix b/pkgs/development/libraries/haskell/HaskellForMaths/default.nix
index 25143e647bb7..a70474698aad 100644
--- a/pkgs/development/libraries/haskell/HaskellForMaths/default.nix
+++ b/pkgs/development/libraries/haskell/HaskellForMaths/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "HaskellForMaths";
-  version = "0.4.3";
-  sha256 = "00s502h3pw9i464qn6cn74ihghcnn5gsar891q276ld682m5vdns";
+  version = "0.4.4";
+  sha256 = "1qijaich0jwlii5wdmv0rnr6skbyacxg09nzh0i7dhk86vimz6q8";
   buildDepends = [ random ];
   meta = {
     homepage = "http://haskellformaths.blogspot.com/";
diff --git a/pkgs/development/libraries/haskell/gd/default.nix b/pkgs/development/libraries/haskell/gd/default.nix
index 42de27483801..44c15b23d4ba 100644
--- a/pkgs/development/libraries/haskell/gd/default.nix
+++ b/pkgs/development/libraries/haskell/gd/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "gd";
-  version = "3000.7.1";
-  sha256 = "07rb02jfmz6bw853b6snw1inby9qgaygdmlsid35snc2xn2ylb50";
+  version = "3000.7.3";
+  sha256 = "1dkzv6zs00qi0jmblkw05ywizc8y3baz7pnz0lcqn1cs1mhcpbhl";
   extraLibraries = [
     expat fontconfig freetype gd libjpeg libpng zlib
   ];
diff --git a/pkgs/development/libraries/haskell/hakyll/default.nix b/pkgs/development/libraries/haskell/hakyll/default.nix
index f6a3d26b24e6..73fe6f0ba68f 100644
--- a/pkgs/development/libraries/haskell/hakyll/default.nix
+++ b/pkgs/development/libraries/haskell/hakyll/default.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "hakyll";
-  version = "3.2.6.1";
-  sha256 = "0chpg04rsp8lxzdj43wqs3wyc7i70hfi3raxdar6bhwxhfxgj4wn";
+  version = "3.2.6.2";
+  sha256 = "07l2igpmr4kd47zk88hz2salzzc92dh7wpny6xr5pw5xf95lpx7p";
   buildDepends = [
     binary blazeHtml citeprocHs cryptohash filepath hamlet mtl pandoc
     parsec regexBase regexTdfa snapCore snapServer tagsoup time
diff --git a/pkgs/development/libraries/haskell/haskell-src-meta/default.nix b/pkgs/development/libraries/haskell/haskell-src-meta/default.nix
index 180c84f65192..972e93a69013 100644
--- a/pkgs/development/libraries/haskell/haskell-src-meta/default.nix
+++ b/pkgs/development/libraries/haskell/haskell-src-meta/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "haskell-src-meta";
-  version = "0.5.1";
-  sha256 = "1wpddllq651vnsibhi0m7agc6ygj95646k29v0xl75nmfb034lz3";
+  version = "0.5.1.1";
+  sha256 = "1v192j47vxjisa5i2zd9lj7l9xa12jsg858yhx5qz624fcq73ggi";
   buildDepends = [ haskellSrcExts syb thLift uniplate ];
   meta = {
     description = "Parse source to template-haskell abstract syntax";
diff --git a/pkgs/development/libraries/haskell/mwc-random/0.10.0.1.nix b/pkgs/development/libraries/haskell/mwc-random/0.10.0.1.nix
deleted file mode 100644
index ab762c2db63b..000000000000
--- a/pkgs/development/libraries/haskell/mwc-random/0.10.0.1.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ cabal, primitive, time, vector }:
-
-cabal.mkDerivation (self: {
-  pname = "mwc-random";
-  version = "0.10.0.1";
-  sha256 = "0mmkl90rf57f2rxg3y2nibd37l9mwr2j4c71bwyvxqzfk7cylw9b";
-  buildDepends = [ primitive time vector ];
-  meta = {
-    homepage = "https://github.com/bos/mwc-random";
-    description = "Fast, high quality pseudo random number generation";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [
-      self.stdenv.lib.maintainers.andres
-      self.stdenv.lib.maintainers.simons
-    ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/mwc-random/0.12.0.0.nix b/pkgs/development/libraries/haskell/mwc-random/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/mwc-random/0.12.0.0.nix
rename to pkgs/development/libraries/haskell/mwc-random/default.nix
diff --git a/pkgs/development/libraries/haskell/persistent-template/default.nix b/pkgs/development/libraries/haskell/persistent-template/default.nix
index 47c364d964d1..e6affc56d2ab 100644
--- a/pkgs/development/libraries/haskell/persistent-template/default.nix
+++ b/pkgs/development/libraries/haskell/persistent-template/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "persistent-template";
-  version = "0.8.1.2";
-  sha256 = "1zrd7v953avmkq40nb7jlsmy45r7dphym3fa6jfqy7d1big1mkzf";
+  version = "0.8.2";
+  sha256 = "0lmdp2gmrbgnp2ls4b76hnjcrllgmzrsiszkmbywkb2dmlxm5wdq";
   buildDepends = [ aeson monadControl persistent text transformers ];
   meta = {
     homepage = "http://www.yesodweb.com/book/persistent";
diff --git a/pkgs/development/libraries/haskell/snap/core.nix b/pkgs/development/libraries/haskell/snap/core.nix
index b9014288f806..3ae933f5087b 100644
--- a/pkgs/development/libraries/haskell/snap/core.nix
+++ b/pkgs/development/libraries/haskell/snap/core.nix
@@ -8,8 +8,8 @@
 
 cabal.mkDerivation (self: {
   pname = "snap-core";
-  version = "0.7.0.1";
-  sha256 = "010w3ycwalz48288342rmwg87pdml7ixg9drw38k206q9s9a9cp9";
+  version = "0.8.0.1";
+  sha256 = "0lw1c5gczb75878vr5acjck656aq5zg1hva9bfny321v0442azds";
   buildDepends = [
     attoparsec attoparsecEnumerator base16Bytestring blazeBuilder
     blazeBuilderEnumerator bytestringMmap bytestringNums
@@ -19,7 +19,7 @@ cabal.mkDerivation (self: {
   ];
   meta = {
     homepage = "http://snapframework.com/";
-    description = "Snap: A Haskell Web Framework (Core)";
+    description = "Snap: A Haskell Web Framework (core interfaces and types)";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
     maintainers = [
diff --git a/pkgs/development/libraries/haskell/snap/server.nix b/pkgs/development/libraries/haskell/snap/server.nix
index 73ddf11b81dc..040889ed1d76 100644
--- a/pkgs/development/libraries/haskell/snap/server.nix
+++ b/pkgs/development/libraries/haskell/snap/server.nix
@@ -7,8 +7,8 @@
 
 cabal.mkDerivation (self: {
   pname = "snap-server";
-  version = "0.7.0.1";
-  sha256 = "149jgd9mcndw9sc051020y7yiai1fipjnqk4s3sbw4lmaysap673";
+  version = "0.8.0.1";
+  sha256 = "1648p0m4n4ha4976gw891z112rzxd9q4s7n4x3v0z3qb10aynxjb";
   buildDepends = [
     attoparsec attoparsecEnumerator binary blazeBuilder
     blazeBuilderEnumerator bytestringNums caseInsensitive directoryTree
diff --git a/pkgs/development/libraries/haskell/unordered-containers/0.1.4.6.nix b/pkgs/development/libraries/haskell/unordered-containers/0.1.4.6.nix
deleted file mode 100644
index da4616a1367a..000000000000
--- a/pkgs/development/libraries/haskell/unordered-containers/0.1.4.6.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ cabal, deepseq, hashable }:
-
-cabal.mkDerivation (self: {
-  pname = "unordered-containers";
-  version = "0.1.4.6";
-  sha256 = "1azwxbrzlzaw54idp3z2xx1xlywzsf1r893blbz51nnwcj9v550d";
-  buildDepends = [ deepseq hashable ];
-  meta = {
-    description = "Efficient hashing-based container types";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [
-      self.stdenv.lib.maintainers.andres
-      self.stdenv.lib.maintainers.simons
-    ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/unordered-containers/0.2.1.0.nix b/pkgs/development/libraries/haskell/unordered-containers/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/unordered-containers/0.2.1.0.nix
rename to pkgs/development/libraries/haskell/unordered-containers/default.nix
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 7785b51a1087..195730a1c40c 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1025,9 +1025,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   murmurHash = callPackage ../development/libraries/haskell/murmur-hash {};
 
-  mwcRandom_0_10_0_1 = callPackage ../development/libraries/haskell/mwc-random/0.10.0.1.nix {};
-  mwcRandom_0_12_0_0 = callPackage ../development/libraries/haskell/mwc-random/0.12.0.0.nix {};
-  mwcRandom = self.mwcRandom_0_12_0_0;
+  mwcRandom = callPackage ../development/libraries/haskell/mwc-random {};
 
   NanoProlog = callPackage ../development/libraries/haskell/NanoProlog {};
 
@@ -1227,10 +1225,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   smallcheck = callPackage ../development/libraries/haskell/smallcheck {};
 
-  snapCore = callPackage ../development/libraries/haskell/snap/core.nix {
-    mwcRandom = self.mwcRandom_0_10_0_1;
-    unorderedContainers = self.unorderedContainers_0_1_4_6;
-  };
+  snapCore = callPackage ../development/libraries/haskell/snap/core.nix {};
 
   snapServer = callPackage ../development/libraries/haskell/snap/server.nix {};
 
@@ -1389,9 +1384,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   unixCompat = callPackage ../development/libraries/haskell/unix-compat {};
 
-  unorderedContainers_0_1_4_6 = callPackage ../development/libraries/haskell/unordered-containers/0.1.4.6.nix {};
-  unorderedContainers_0_2_1_0 = callPackage ../development/libraries/haskell/unordered-containers/0.2.1.0.nix {};
-  unorderedContainers = self.unorderedContainers_0_2_1_0;
+  unorderedContainers = callPackage ../development/libraries/haskell/unordered-containers {};
 
   url = callPackage ../development/libraries/haskell/url {};