diff --git a/pkgs/development/libraries/directfb/default.nix b/pkgs/development/libraries/directfb/default.nix
index 55a8a823e1c..9b4241aa3be 100644
--- a/pkgs/development/libraries/directfb/default.nix
+++ b/pkgs/development/libraries/directfb/default.nix
@@ -10,6 +10,8 @@ stdenv.mkDerivation {
     sha256 = s.hash;
   };
 
+  patches = [ ./ftbfs.patch ];
+
   buildNativeInputs = [ perl ];
 
   buildInputs = [ zlib libjpeg freetype giflib libpng ]
diff --git a/pkgs/development/libraries/directfb/ftbfs.patch b/pkgs/development/libraries/directfb/ftbfs.patch
new file mode 100644
index 00000000000..b6907e70be7
--- /dev/null
+++ b/pkgs/development/libraries/directfb/ftbfs.patch
@@ -0,0 +1,25 @@
+From: André Draszik <andre.draszik@st.com>
+Date: Wed, 28 Sep 2011 17:36:00 +0000 (+0100)
+Subject: generic_stretch_blit: fix compilation due to undefined reference to DSPF_ARGBF88871
+X-Git-Url: http://git.directfb.org/?p=core%2FDirectFB.git;a=commitdiff_plain;h=ef5e1398fe4037b63d6513e450f107fcfe91047f
+
+generic_stretch_blit: fix compilation due to undefined reference to DSPF_ARGBF88871
+
+../../../../DirectFB/src/gfx/generic/generic_stretch_blit.c: In function 'stretch_hvx':
+../../../../DirectFB/src/gfx/generic/generic_stretch_blit.c:444:21: error: 'DSPF_ARGBF88871' undeclared (first use in this function)
+../../../../DirectFB/src/gfx/generic/generic_stretch_blit.c:444:21: note: each undeclared identifier is reported only once for each function it appears in
+---
+
+diff --git a/src/gfx/generic/generic_stretch_blit.c b/src/gfx/generic/generic_stretch_blit.c
+index 65076f4..6dd987b 100644
+--- a/src/gfx/generic/generic_stretch_blit.c
++++ b/src/gfx/generic/generic_stretch_blit.c
+@@ -441,7 +441,7 @@ stretch_hvx( CardState *state, DFBRectangle *srect, DFBRectangle *drect )
+                     }
+                     break;
+ 
+-               case DSPF_ARGBF88871:
++               case DSPF_RGBAF88871:
+                     if (state->blittingflags & DSBLIT_SRC_PREMULTIPLY) {
+                          for (i=0; i<gfxs->Blut->num_entries; i++) {
+                               int alpha = entries[i].a + 1;
diff --git a/pkgs/development/libraries/directfb/src-for-default.nix b/pkgs/development/libraries/directfb/src-for-default.nix
index b181d2858f5..c154ac68e4a 100644
--- a/pkgs/development/libraries/directfb/src-for-default.nix
+++ b/pkgs/development/libraries/directfb/src-for-default.nix
@@ -1,9 +1,9 @@
 rec {
-   version="1.4.3";
-   name="directfb-1.4.3";
-   hash="0y79lwzq7srlbgrva7b5y8klbp6gmr8hxrayq8njaw7by3jald8l";
-   url="http://directfb.org/downloads/Core/DirectFB-1.4/DirectFB-${version}.tar.gz";
-   advertisedUrl="http://directfb.org/downloads/Core/DirectFB-1.4/DirectFB-1.4.3.tar.gz";
+   version="1.5.3";
+   name="directfb-1.5.3";
+   hash="1w2i4az6v4sh086s27qbyn5w02s67a7dfm2xdpdm4r2zpgl7axg5";
+   url="http://directfb.org/downloads/Core/DirectFB-1.5/DirectFB-${version}.tar.gz";
+   advertisedUrl="http://directfb.org/downloads/Core/DirectFB-1.5/DirectFB-1.5.3.tar.gz";
   
   
 }
diff --git a/pkgs/development/libraries/glib/2.28.x.nix b/pkgs/development/libraries/glib/2.28.x.nix
index dd613c6ce3c..e41917b3fe4 100644
--- a/pkgs/development/libraries/glib/2.28.x.nix
+++ b/pkgs/development/libraries/glib/2.28.x.nix
@@ -17,7 +17,8 @@ stdenv.mkDerivation rec {
   buildInputs = stdenv.lib.optional (!stdenv.isLinux) libiconv;
   buildNativeInputs = [ perl pkgconfig gettext ];
 
-  propagatedBuildInputs = [ zlib ];
+  propagatedBuildInputs = [ zlib ]
+    ++ stdenv.lib.optional (!stdenv.isLinux) gettext;
 
   # glib buildsystem fails to find python, thus hardcodes python2.4 in #!
   postInstall = ''
diff --git a/pkgs/development/libraries/haskell/hakyll/default.nix b/pkgs/development/libraries/haskell/hakyll/default.nix
index 5f506021c14..d461f54e15a 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 = "3.2.4.0";
-  sha256 = "1hyvvcq4hvbwz8zaswi8949sqzjkby6754b0y5zp2cpax2ykkbgx";
+  version = "3.2.4.1";
+  sha256 = "0ijym3k8f9za6cd1dnf8qx0jk85r5kz4f8gy7bn50jclcslnfl0n";
   buildDepends = [
     binary blazeHtml citeprocHs cryptohash hamlet mtl pandoc parsec
     regexBase regexPcre snapCore snapServer tagsoup time
diff --git a/pkgs/lib/customisation.nix b/pkgs/lib/customisation.nix
index 49ae440a729..54965ffb580 100644
--- a/pkgs/lib/customisation.nix
+++ b/pkgs/lib/customisation.nix
@@ -42,9 +42,14 @@ rec {
     in newDrv //
       { meta = if drv ? meta then drv.meta else {};
         passthru = if drv ? passthru then drv.passthru else {};
-        hostDrv = overrideDerivation drv.hostDrv f;
-        buildDrv = overrideDerivation drv.buildDrv f;
-      };
+      }
+      //
+      (if (drv ? hostDrv && drv ? buildDrv)
+       then {
+         hostDrv = overrideDerivation drv.hostDrv f;
+         buildDrv = overrideDerivation drv.buildDrv f;
+       }
+       else { });
 
 
   # usage: (you can use override multiple times)
diff --git a/pkgs/misc/tex/texlive/moderncv.nix b/pkgs/misc/tex/texlive/moderncv.nix
index bbff2ccf4a1..f54800c7ccc 100644
--- a/pkgs/misc/tex/texlive/moderncv.nix
+++ b/pkgs/misc/tex/texlive/moderncv.nix
@@ -1,9 +1,9 @@
 args: with args;
 rec {
-  name = "moderncv-2007.05.28";
+  name = "moderncv-2012.01.16";
   src = fetchurl {
     url = "http://mirror.ctan.org/macros/latex/contrib/moderncv.zip";
-    sha256 = "d479141e9ae6dad745b03af47541b1bf7d312613de42bb7984eb4b556854cb51";
+    sha256 = "a9d2de7fc03c35c4084915b2788c8d7acfb695f9e27f6cd81427a7dd1a64cb54";
   };
 
   buildInputs = [texLive unzip];
diff --git a/pkgs/servers/sql/mysql55/default.nix b/pkgs/servers/sql/mysql55/default.nix
index 6a824b4f51c..493f86f00f7 100644
--- a/pkgs/servers/sql/mysql55/default.nix
+++ b/pkgs/servers/sql/mysql55/default.nix
@@ -3,11 +3,11 @@
 # Note: zlib is not required; MySQL can use an internal zlib.
 
 stdenv.mkDerivation {
-  name = "mysql-5.5.15";
+  name = "mysql-5.5.20";
 
   src = fetchurl {
-    url = ftp://mirror.leaseweb.com/mysql/Downloads/MySQL-5.5/mysql-5.5.15.tar.gz;
-    sha256 = "10jwkkmp231swc986z01nsp0q67kp0zdkfb4q4v9if2vn6a51ldy";
+    url = ftp://mirror.leaseweb.com/mysql/Downloads/MySQL-5.5/mysql-5.5.20.tar.gz;
+    sha256 = "03jl60mzrsd1jb8fvkz6c8j2239b37k8n1i07jk1q4yk58aq8ynh";
   };
 
   buildInputs = [ cmake bison ncurses openssl readline zlib ];
diff --git a/pkgs/tools/misc/grub/default.nix b/pkgs/tools/misc/grub/default.nix
index cce2adf5ce5..a187dd9d6b2 100644
--- a/pkgs/tools/misc/grub/default.nix
+++ b/pkgs/tools/misc/grub/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl, autoconf, automake, buggyBiosCDSupport ? true}:
 
 stdenv.mkDerivation {
-  name = "grub-0.97-patch-1.10";
+  name = "grub-0.97-patch-1.12";
   
   src = fetchurl {
     url = ftp://alpha.gnu.org/gnu/grub/grub-0.97.tar.gz;
@@ -13,8 +13,8 @@ stdenv.mkDerivation {
   # failures on systems with more than 2 GiB RAM, and for booting from
   # ext3 filesystems with 256-byte inodes as well as ext4 filesystems.
   gentooPatches = fetchurl {
-    url = mirror://gentoo/distfiles/grub-0.97-patches-1.10.tar.bz2;
-    sha256 = "015hkmb2jd6jfzkfr13cdh16frvva04rwr4yahzyw5xhl634d1h9";
+    url = mirror://gentoo/distfiles/grub-0.97-patches-1.12.tar.bz2;
+    sha256 = "15xc5349hkzl03lbn2cadrmvjrf3s8sn147vv2142cwys9sdzkl0";
   };
 
   patches = [
diff --git a/pkgs/tools/package-management/nix/unstable.nix b/pkgs/tools/package-management/nix/unstable.nix
index e5475e7fd06..de17381fec9 100644
--- a/pkgs/tools/package-management/nix/unstable.nix
+++ b/pkgs/tools/package-management/nix/unstable.nix
@@ -5,11 +5,11 @@
 }:
 
 stdenv.mkDerivation rec {
-  name = "nix-1.0pre31616";
+  name = "nix-1.0pre31729";
 
   src = fetchurl {
-    url = "http://hydra.nixos.org/build/1823251/download/4/${name}.tar.bz2";
-    sha256 = "34d95cee3a931666f358f18557f884b6bc7fade83092eef021e52db7ba5e2af1";
+    url = "http://hydra.nixos.org/build/1867511/download/4/${name}.tar.bz2";
+    sha256 = "c2e33d5837a686c42deaab1cfcf8ec0e13b0c841d936086d773a2415e4141d2d";
   };
 
   buildNativeInputs = [ perl pkgconfig ];
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 2aba0b4afd3..87448499a42 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -332,6 +332,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
     self : self.haskellPlatformArgs_2010_2_0_0 self // {
       haskellPlatform = self.haskellPlatform_2010_2_0_0;
       repaExamples = null;      # don't pick this version of 'repa-examples' during nix-env -u
+      deepseq = self.deepseq_1_1_0_2;
+      # deviating from Haskell platform here, to make some packages (notably statistics) compile
     };
 
   haskellPlatform_2010_2_0_0 =
@@ -553,7 +555,10 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   cprngAes = callPackage ../development/libraries/haskell/cprng-aes {};
 
-  criterion = callPackage ../development/libraries/haskell/criterion {};
+  criterion = callPackage ../development/libraries/haskell/criterion {
+    mtl = self.mtl2;
+    parsec = self.parsec3;
+  };
 
   Crypto = callPackage ../development/libraries/haskell/Crypto {};