diff --git a/pkgs/applications/graphics/inkscape/default.nix b/pkgs/applications/graphics/inkscape/default.nix
index 19a2346802c..9ef5382eaf9 100644
--- a/pkgs/applications/graphics/inkscape/default.nix
+++ b/pkgs/applications/graphics/inkscape/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, pkgconfig, perl, perlXMLParser, gtk, libXft
 , libpng, zlib, popt, boehmgc, libxml2, libxslt, glib, gtkmm
 , glibmm, libsigcxx, lcms, boost, gettext, makeWrapper, intltool
-, gsl, python, pyxml, lxml, poppler }:
+, gsl, python, pyxml, lxml, poppler, imagemagick, libwpg }:
 
 stdenv.mkDerivation rec {
   name = "inkscape-0.48.2";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "10v7ixdz7f8vgk2wv0m81zli9p0f446cm1f4aqlvni1ndsx44fi2";
   };
 
-  patches = [ ./configure-python-libs.patch ];
+  patches = [ ./configure-python-libs.patch ./libpng-1.5.patch ];
 
   propagatedBuildInputs = [
     # Python is used at run-time to execute scripts, e.g., those from
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     pkgconfig perl perlXMLParser gtk libXft libpng zlib popt boehmgc
     libxml2 libxslt glib gtkmm glibmm libsigcxx lcms boost gettext
-    makeWrapper intltool gsl poppler
+    makeWrapper intltool gsl poppler imagemagick libwpg
   ];
 
   configureFlags = "--with-python";
diff --git a/pkgs/applications/graphics/inkscape/libpng-1.5.patch b/pkgs/applications/graphics/inkscape/libpng-1.5.patch
new file mode 100644
index 00000000000..4c8a7ee5f9b
--- /dev/null
+++ b/pkgs/applications/graphics/inkscape/libpng-1.5.patch
@@ -0,0 +1,47 @@
+Source: upstream revisions 10061 and 10707
+
+--- a/src/sp-image.cpp	2011-02-21 07:59:34 +0000
++++ b/src/sp-image.cpp	2011-02-21 08:57:28 +0000
+@@ -387,9 +387,13 @@
+ 
+ #if defined(PNG_iCCP_SUPPORTED)
+                 {
+-                    char* name = 0;
++                    png_charp name = 0;
+                     int compression_type = 0;
+-                    char* profile = 0;
++#if (PNG_LIBPNG_VER < 10500)
++                    png_charp profile = 0;
++#else
++                    png_bytep profile = 0;
++#endif
+                     png_uint_32 proflen = 0;
+                     if ( png_get_iCCP(pngPtr, infoPtr, &name, &compression_type, &profile, &proflen) ) {
+ //                                         g_message("Found an iCCP chunk named [%s] with %d bytes and comp %d", name, proflen, compression_type);
+
+--- a/src/extension/internal/pdfinput/svg-builder.cpp	2011-10-27 04:55:51 +0000
++++ b/src/extension/internal/pdfinput/svg-builder.cpp	2011-10-29 20:34:00 +0000
+@@ -1481,7 +1481,7 @@
+         return NULL;
+     }
+     // Set error handler
+-    if (setjmp(png_ptr->jmpbuf)) {
++    if (setjmp(png_jmpbuf(png_ptr))) {
+         png_destroy_write_struct(&png_ptr, &info_ptr);
+         return NULL;
+     }
+
+--- a/src/helper/png-write.cpp	2011-08-07 10:53:12 +0000
++++ b/src/helper/png-write.cpp	2011-10-29 20:34:00 +0000
+@@ -166,8 +166,8 @@
+     /* Set error handling.  REQUIRED if you aren't supplying your own
+      * error hadnling functions in the png_create_write_struct() call.
+      */
+-    if (setjmp(png_ptr->jmpbuf)) {
+-        /* If we get here, we had a problem reading the file */
++    if (setjmp(png_jmpbuf(png_ptr))) {
++        // If we get here, we had a problem reading the file
+         fclose(fp);
+         png_destroy_write_struct(&png_ptr, &info_ptr);
+         return false;
+
diff --git a/pkgs/applications/networking/irc/chatzilla/default.nix b/pkgs/applications/networking/irc/chatzilla/default.nix
index 8ce73c69f3d..5d16c979f6a 100644
--- a/pkgs/applications/networking/irc/chatzilla/default.nix
+++ b/pkgs/applications/networking/irc/chatzilla/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, unzip, xulrunner, makeWrapper }:
 
 stdenv.mkDerivation rec {
-  name = "chatzilla-0.9.87";
+  name = "chatzilla-0.9.88";
   
   src = fetchurl {
     # Obtained from http://chatzilla.rdmsoft.com/xulrunner/.
-    url = http://chatzilla.rdmsoft.com/xulrunner/download/chatzilla-0.9.87-xr.zip;
-    sha256 = "1qwbqngrxyip3k2b71adg271sifvrrxcixkyrsy4vmgl5bwdsl4d";
+    url = "http://chatzilla.rdmsoft.com/xulrunner/download/${name}-xr.zip";
+    sha256 = "041jpjl7wnbhqm2f8bf2pwp6igjapmy74swac94h54n644wl5nz0";
   };
 
   buildInputs = [ unzip makeWrapper ];
diff --git a/pkgs/applications/office/gnucash/default.nix b/pkgs/applications/office/gnucash/default.nix
index a58c82e1b8b..a2c3ed5d6ba 100644
--- a/pkgs/applications/office/gnucash/default.nix
+++ b/pkgs/applications/office/gnucash/default.nix
@@ -8,15 +8,12 @@
  * for a possible solution.
  */
 
-let
-  name = "gnucash-2.4.8";
-in
-stdenv.mkDerivation {
-  inherit name;
+stdenv.mkDerivation rec {
+  name = "gnucash-2.4.10";
 
   src = fetchurl {
     url = "mirror://sourceforge/gnucash/${name}.tar.bz2";
-    sha256 = "06gfgw4sq1b8c9qzinyd3wmcy3i0jyprngr259l0aldv8rvix8aa";
+    sha256 = "1k76b6hnsmljggxsq5l9w94krfmhx58ij8jcxf72p0ddnlimdrjj";
   };
 
   buildInputs = [
@@ -44,7 +41,7 @@ stdenv.mkDerivation {
   '';
 
   # The following settings fix failures in the test suite. It's not required otherwise.
-  NIX_LDFLAGS = "-rpath=${guile}/lib";
+  NIX_LDFLAGS = "-rpath=${guile}/lib -rpath=${glib}/lib";
   preCheck = "export GNC_DOT_DIR=$PWD/dot-gnucash";
   doCheck = true;
 
diff --git a/pkgs/applications/science/astronomy/xplanet/default.nix b/pkgs/applications/science/astronomy/xplanet/default.nix
index 15e04c3835c..816119a3b92 100644
--- a/pkgs/applications/science/astronomy/xplanet/default.nix
+++ b/pkgs/applications/science/astronomy/xplanet/default.nix
@@ -1,27 +1,21 @@
-{stdenv, fetchurl, lib, pkgconfig, freetype, pango, libpng, libtiff, giflib, libjpeg}:
+{stdenv, fetchurl, pkgconfig, freetype, pango, libpng, libtiff, giflib
+, libjpeg, netpbm}:
 
-stdenv.mkDerivation {
-  name = "xplanet-1.2.1";
+stdenv.mkDerivation rec {
+  name = "xplanet-1.2.2";
 
   src = fetchurl {
-    url = mirror://sourceforge/xplanet/xplanet-1.2.1.tar.gz;
-    sha256 = "1pp55a1rgjkfcrwc00y3l48fhpqcp3qagd1zbym6zg27fzi5fbgm";
+    url = "mirror://sourceforge/xplanet/${name}.tar.gz";
+    sha256 = "1jnkrly9njkibxqbg5im4pq9cqjzwmki6jzd318dvlfmnicqr3vg";
   };
 
-  patches = 
-    [ # Build on GCC 4.4.
-      (fetchurl {
-        url = "http://sources.gentoo.org/viewcvs.py/*checkout*/gentoo-x86/x11-misc/xplanet/files/xplanet-1.2.1-gentoo.patch?rev=1.1";
-        sha256 = "0mmagjizj4hj057qmpi45w95zlrqda32x96xy44f6126xzj02yd5";
-      })
-    ];
-
-  buildInputs = [ pkgconfig freetype pango libpng libtiff giflib libjpeg ];
+  buildInputs = [ pkgconfig freetype pango libpng libtiff giflib libjpeg netpbm ];
 
   meta = {
     description = "Renders an image of the earth or other planets into the X root window";
     homepage = http://xplanet.sourceforge.net;
     license = "GPL";
-    maintainers = [ lib.maintainers.sander ];
+    maintainers = [ stdenv.lib.maintainers.sander stdenv.lib.maintainers.urkud ];
+    platforms = stdenv.lib.platforms.all;
   };
 }
diff --git a/pkgs/data/documentation/man-pages/default.nix b/pkgs/data/documentation/man-pages/default.nix
index 1376a92c134..2e732e1acdb 100644
--- a/pkgs/data/documentation/man-pages/default.nix
+++ b/pkgs/data/documentation/man-pages/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "man-pages-3.32";
+  name = "man-pages-3.35";
   
   src = fetchurl {
     url = "mirror://kernel/linux/docs/man-pages/Archive/${name}.tar.bz2";
-    sha256 = "1qr1k6kgx7i4gni9w2h610k2aa2bqdk7p08bmqslfwrzpmkkiawn";
+    sha256 = "186zn80k10jg1m4jp5x5x73f7cczydsjcw5zxc5d9lls5wvafp66";
   };
 
   preBuild =
diff --git a/pkgs/desktops/kde-4.7/default.nix b/pkgs/desktops/kde-4.7/default.nix
index 3bdf825410c..428e1370635 100644
--- a/pkgs/desktops/kde-4.7/default.nix
+++ b/pkgs/desktops/kde-4.7/default.nix
@@ -1,4 +1,4 @@
-{ callPackage, callPackageOrig, stdenv, qt47 }:
+{ callPackage, callPackageOrig, stdenv, qt48 }:
 
 let
   release = "4.7.4";
@@ -44,7 +44,7 @@ kde.modules // kde.individual //
 
   akonadi = callPackage ./support/akonadi { };
 
-  qt4 = qt47;
+  qt4 = qt48;
 
   kdebase_workspace = kde.modules.kde_workspace;
 
@@ -52,5 +52,8 @@ kde.modules // kde.individual //
 
   full = stdenv.lib.attrValues kde.modules;
 
-  l10n = callPackage ./l10n { inherit release; };
+  l10n = callPackage ./l10n {
+    inherit release;
+    inherit (kde.manifest) stable;
+  };
 }
diff --git a/pkgs/desktops/kde-4.7/files/kde-wallpapers-buildsystem.patch b/pkgs/desktops/kde-4.7/files/kde-wallpapers-buildsystem.patch
new file mode 100644
index 00000000000..378cdb64694
--- /dev/null
+++ b/pkgs/desktops/kde-4.7/files/kde-wallpapers-buildsystem.patch
@@ -0,0 +1,17 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 3d3e247..f78db67 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,5 +1,10 @@
+-find_package(KDE4 REQUIRED)
+-include(KDE4Defaults)
++project(kde-wallpapers NONE)
++if( WALLPAPER_INSTALL_DIR )
++  message(STATUS "Installing wallpapers to user-supplied directory ${WALLPAPER_INSTALL_DIR}")
++else()
++  find_package(KDE4 REQUIRED)
++  include(KDE4Defaults)
++endif()
+ 
+ install(DIRECTORY Air DESTINATION ${WALLPAPER_INSTALL_DIR} PATTERN .svn EXCLUDE)
+ 
diff --git a/pkgs/desktops/kde-4.7/kde-runtime.nix b/pkgs/desktops/kde-4.7/kde-runtime.nix
index 003c4aceea9..9b25e77b083 100644
--- a/pkgs/desktops/kde-4.7/kde-runtime.nix
+++ b/pkgs/desktops/kde-4.7/kde-runtime.nix
@@ -1,11 +1,11 @@
 { kde, kdelibs, shared_desktop_ontologies, bzip2, libssh, exiv2, attica
-, libcanberra, virtuoso, samba, ntrack
+, libcanberra, virtuoso, samba, ntrack, libjpeg
 }:
 
 kde {
   buildInputs =
     [ kdelibs shared_desktop_ontologies bzip2 libssh exiv2 attica
-      samba (libcanberra.override { gtk = null; }) ntrack
+      samba (libcanberra.override { gtk = null; }) ntrack libjpeg
     ];
 
   passthru.propagatedUserEnvPackages = [ virtuoso ];
diff --git a/pkgs/desktops/kde-4.7/kde-wallpapers.nix b/pkgs/desktops/kde-4.7/kde-wallpapers.nix
index 60298e567fb..97773ffadcd 100644
--- a/pkgs/desktops/kde-4.7/kde-wallpapers.nix
+++ b/pkgs/desktops/kde-4.7/kde-wallpapers.nix
@@ -1,8 +1,11 @@
-{ kde, kdelibs }:
+{ kde, cmake }:
 
 kde {
+  buildNativeInputs = [ cmake ];
 
-  buildInputs = [ kdelibs ];
+  patches = [ ./files/kde-wallpapers-buildsystem.patch ];
+
+  cmakeFlags = "-DWALLPAPER_INSTALL_DIR=share/wallpapers";
 
   outputHashAlgo = "sha256";
   outputHashMode = "recursive";
diff --git a/pkgs/desktops/kde-4.7/kde-workspace.nix b/pkgs/desktops/kde-4.7/kde-workspace.nix
index 277bdd62634..20fc5b56455 100644
--- a/pkgs/desktops/kde-4.7/kde-workspace.nix
+++ b/pkgs/desktops/kde-4.7/kde-workspace.nix
@@ -1,13 +1,13 @@
 { kde, kdelibs, qimageblitz, libdbusmenu_qt, xorg, shared_desktop_ontologies
 , lm_sensors, pciutils, libraw1394, libusb, libxklavier, python, libqalculate
 , consolekit, xkeyboard_config, kdepimlibs, pam, boost, gpsd, prison, akonadi
-, pykde4
+, pykde4, libjpeg, pkgconfig, libXft, libXxf86misc
 }:
 
 kde {
 
   buildInputs =
-    [ kdelibs qimageblitz libdbusmenu_qt pykde4
+    [ kdelibs qimageblitz libdbusmenu_qt pykde4 libjpeg libXft libXxf86misc
       xorg.libxkbfile xorg.libXcomposite xorg.libXScrnSaver xorg.libXtst
       xorg.libXcomposite xorg.libXdamage xorg.libXau xorg.libXdmcp
       xorg.libpthreadstubs
@@ -15,6 +15,8 @@ kde {
       libusb python libqalculate consolekit kdepimlibs pam prison akonadi
     ];
 
+  buildNativeInputs = [ pkgconfig ];
+
   preConfigure =
    ''
      # Fix incorrect path to kde4-config.
diff --git a/pkgs/desktops/kde-4.7/kdegames.nix b/pkgs/desktops/kde-4.7/kdegames.nix
index 3378a99d9e7..03ecfbd88b4 100644
--- a/pkgs/desktops/kde-4.7/kdegames.nix
+++ b/pkgs/desktops/kde-4.7/kdegames.nix
@@ -1,12 +1,14 @@
 { kde, kdelibs, qca2, twisted, pythonPackages, sip, makeWrapper, pykde4,
-  openal, libsndfile, qhull }:
+  openal, libsndfile, qhull, sqlite, pkgconfig }:
 
 kde rec {
   buildInputs = [ kdelibs qca2 pythonPackages.python pythonPackages.wrapPython
-    openal libsndfile qhull ] ++ pythonPath;
+    openal libsndfile qhull sqlite ] ++ pythonPath;
 
   pythonPath = [ pythonPackages.twisted pykde4 ];
 
+  buildNativeInputs = [ pkgconfig ];
+
   # TODO: ggz
 
   postInstall = "wrapPythonPrograms";
diff --git a/pkgs/desktops/kde-4.7/kdelibs.nix b/pkgs/desktops/kde-4.7/kdelibs.nix
index 3a6ae7a4afb..bb6e9a84665 100644
--- a/pkgs/desktops/kde-4.7/kdelibs.nix
+++ b/pkgs/desktops/kde-4.7/kdelibs.nix
@@ -10,7 +10,7 @@ kde {
   buildInputs =
     [ acl attr attica avahi bzip2 enchant fam getopt giflib herqq jasper
       libdbusmenu_qt libXScrnSaver libxslt pcre polkit_qt_1 qca2
-      shared_desktop_ontologies udev libxml2 libjpeg
+      shared_desktop_ontologies udev libxml2 libjpeg kerberos
     ];
 
   propagatedBuildInputs = [ qt4 soprano strigi phonon ];
diff --git a/pkgs/desktops/kde-4.7/kdemultimedia.nix b/pkgs/desktops/kde-4.7/kdemultimedia.nix
index b4ca7a8d2da..4c3182dd9fe 100644
--- a/pkgs/desktops/kde-4.7/kdemultimedia.nix
+++ b/pkgs/desktops/kde-4.7/kdemultimedia.nix
@@ -1,5 +1,5 @@
 { kde, alsaLib, libvorbis, taglib, flac, cdparanoia, lame, kdelibs, ffmpeg,
-  libmusicbrainz3, libtunepimp }:
+  libmusicbrainz3, libtunepimp, pulseaudio }:
 
 kde {
 
@@ -7,7 +7,8 @@ kde {
     # Note: kdemultimedia can use xine-lib, but it doesn't seem useful
     # without the Phonon Xine backend.
     [ kdelibs cdparanoia taglib libvorbis libmusicbrainz3 libtunepimp ffmpeg
-    flac lame ];
+      flac lame pulseaudio
+    ];
 
   meta = {
     description = "KDE multimedia programs such as a movie player and volume utility";
diff --git a/pkgs/desktops/kde-4.7/kdenetwork/kget.nix b/pkgs/desktops/kde-4.7/kdenetwork/kget.nix
index 33d9ec1ca01..2381a2459e6 100644
--- a/pkgs/desktops/kde-4.7/kdenetwork/kget.nix
+++ b/pkgs/desktops/kde-4.7/kdenetwork/kget.nix
@@ -1,10 +1,10 @@
-{ kde, kdelibs, libktorrent, kde_workspace, kdepimlibs,
-  shared_desktop_ontologies, kde_baseapps, gpgme, boost, libmms, qca2 }:
+{ kde, kdelibs, libktorrent, kde_workspace, kdepimlibs, sqlite
+, shared_desktop_ontologies, kde_baseapps, gpgme, boost, libmms, qca2 }:
 
 kde {
   buildInputs =
     [ kdelibs libktorrent kde_workspace shared_desktop_ontologies kdepimlibs
-      kde_baseapps gpgme boost libmms qca2
+      kde_baseapps gpgme boost libmms qca2 sqlite
     ];
 
   KDEDIRS = libktorrent;
diff --git a/pkgs/desktops/kde-4.7/kdenetwork/kopete.nix b/pkgs/desktops/kde-4.7/kdenetwork/kopete.nix
index a4b01c5f9a6..704f6d04dfe 100644
--- a/pkgs/desktops/kde-4.7/kdenetwork/kopete.nix
+++ b/pkgs/desktops/kde-4.7/kdenetwork/kopete.nix
@@ -1,11 +1,11 @@
 { kde, kdelibs, speex, libmsn, libotr, kdepimlibs, qimageblitz, libktorrent,
   jasper, libidn, mediastreamer, msilbc, pkgconfig, libxml2, libxslt, giflib,
-  libgadu, boost, qca2, gpgme }:
+  libgadu, boost, qca2, gpgme, sqlite }:
 
 kde {
   buildInputs = [ kdelibs speex libmsn libotr kdepimlibs qimageblitz libktorrent
     jasper libidn mediastreamer msilbc libxml2 libxslt giflib libgadu boost qca2
-    gpgme ];
+    gpgme sqlite ];
 
   buildNativeInputs = [ pkgconfig ];
 
diff --git a/pkgs/desktops/kde-4.7/kdenetwork/krdc.nix b/pkgs/desktops/kde-4.7/kdenetwork/krdc.nix
index 664b1bc45a7..40ef91d5433 100644
--- a/pkgs/desktops/kde-4.7/kdenetwork/krdc.nix
+++ b/pkgs/desktops/kde-4.7/kdenetwork/krdc.nix
@@ -1,7 +1,7 @@
-{ kde, kdelibs, libvncserver }:
+{ kde, kdelibs, libvncserver, libjpeg }:
 
 kde {
-  buildInputs = [ kdelibs libvncserver ];
+  buildInputs = [ kdelibs libvncserver libjpeg ];
 
   patches = [ ./kdenetwork.patch ];
 }
diff --git a/pkgs/desktops/kde-4.7/l10n/default.nix b/pkgs/desktops/kde-4.7/l10n/default.nix
index 144968f6672..69cfdcf8ab2 100644
--- a/pkgs/desktops/kde-4.7/l10n/default.nix
+++ b/pkgs/desktops/kde-4.7/l10n/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, kdelibs, gettext, release }:
+{ stdenv, fetchurl, kdelibs, gettext, release, stable }:
 
 let
 
@@ -11,7 +11,7 @@ let
       name = "kde-l10n-${saneName}-${release}";
 
       src = fetchurl {
-        url = "mirror://kde/stable/${release}/src/kde-l10n/kde-l10n-${lang}-${release}.tar.bz2";
+        url = "mirror://kde/${if stable then "" else "un"}stable/${release}/src/kde-l10n/kde-l10n-${lang}-${release}.tar.bz2";
         name = "${name}.tar.bz2";
         inherit sha256;
       };
diff --git a/pkgs/development/interpreters/ruby/gem.nix b/pkgs/development/interpreters/ruby/gem.nix
index 289f840aa04..a64f10e268c 100644
--- a/pkgs/development/interpreters/ruby/gem.nix
+++ b/pkgs/development/interpreters/ruby/gem.nix
@@ -40,6 +40,15 @@ let
 
       runHook postInstall
     '';
+
+    propagatedUserEnvPkgs = requiredGems;
+    postFixup = ''
+      if [ -n "$propagatedUserEnvPkgs" ]; then
+          mkdir -p "$out/nix-support"
+          echo "$propagatedUserEnvPkgs" > "$out/nix-support/propagated-user-env-packages"
+      fi
+    '';
+
   };
   mb = stdenv.lib.maybeAttr;
   patchedGem = a: stdenv.mkDerivation (removeAttrs (stdenv.lib.mergeAttrsByFuncDefaults
diff --git a/pkgs/development/interpreters/ruby/generated.nix b/pkgs/development/interpreters/ruby/generated.nix
index c518b46de78..921fc1b57d8 100644
--- a/pkgs/development/interpreters/ruby/generated.nix
+++ b/pkgs/development/interpreters/ruby/generated.nix
@@ -17,11 +17,8 @@ g: # Get dependencies from patched gems
     buildr = g.buildr_1_4_6;
     bundler = g.bundler_1_0_22;
     childprocess = g.childprocess_0_3_1;
-    coffee_script = g.coffee_script_2_2_0;
-    coffee_script_source = g.coffee_script_source_1_2_0;
     diff_lcs = g.diff_lcs_1_1_3;
     erubis = g.erubis_2_7_0;
-    execjs = g.execjs_1_3_0;
     ffi = g.ffi_1_0_11;
     highline = g.highline_1_5_1;
     hike = g.hike_1_2_1;
@@ -63,7 +60,7 @@ g: # Get dependencies from patched gems
     tzinfo = g.tzinfo_0_3_31;
     xml_simple = g.xml_simple_1_0_12;
   };
-  gem_nix_args = [ ''autotest-rails'' ''buildr'' ''coffee-script'' ''nix'' ''rails'' ''rake'' ''rb-fsevent'' ''sass'' ''selenium-webdriver'' ];
+  gem_nix_args = [ ''autotest-rails'' ''buildr'' ''nix'' ''rails'' ''rake'' ''rb-fsevent'' ''sass'' ''selenium-webdriver'' ];
   gems = {
     ZenTest_4_6_2 = {
       basename = ''ZenTest'';
@@ -158,7 +155,7 @@ installed versions.'';
         longDescription = ''A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.'';
       };
       name = ''activesupport-3.2.1'';
-      requiredGems = [ g.i18n_0_6_0 ];
+      requiredGems = [ g.i18n_0_6_0 g.multi_json_1_0_4 ];
       sha256 = ''0ajkzsa7467jp7lxgjcsl94nqkvw9d0h492rypljs0f8f1fn744v'';
     };
     arel_3_0_0 = {
@@ -278,34 +275,6 @@ for those one-off tasks, with a language that's a joy to use.
       requiredGems = [ g.ffi_1_0_11 ];
       sha256 = ''0phkpxvwz88kgbi4d2akiqbppf374kn2rwf64hfs99p1j1ksbw5l'';
     };
-    coffee_script_2_2_0 = {
-      basename = ''coffee_script'';
-      meta = {
-        description = ''Ruby CoffeeScript Compiler'';
-        homepage = ''http://github.com/josh/ruby-coffee-script'';
-        longDescription = ''    Ruby CoffeeScript is a bridge to the JS CoffeeScript compiler.
-'';
-      };
-      name = ''coffee-script-2.2.0'';
-      requiredGems = [ g.coffee_script_source_1_2_0 g.execjs_1_3_0 ];
-      sha256 = ''133cp4znfp44wwnv12myw8s0z6qws74ilqmw88iwzkshg689zpdc'';
-    };
-    coffee_script_source_1_2_0 = {
-      basename = ''coffee_script_source'';
-      meta = {
-        description = ''The CoffeeScript Compiler'';
-        homepage = ''http://jashkenas.github.com/coffee-script/'';
-        longDescription = ''      CoffeeScript is a little language that compiles into JavaScript.
-      Underneath all of those embarrassing braces and semicolons,
-      JavaScript has always had a gorgeous object model at its heart.
-      CoffeeScript is an attempt to expose the good parts of JavaScript
-      in a simple way.
-'';
-      };
-      name = ''coffee-script-source-1.2.0'';
-      requiredGems = [  ];
-      sha256 = ''13cpmlj2m5lyxipdxmnajy12bzwmgc6g2n090gpa0wd5am7xvhkp'';
-    };
     diff_lcs_1_1_2 = {
       basename = ''diff_lcs'';
       meta = {
@@ -365,18 +334,6 @@ is the MIT license.'';
       requiredGems = [  ];
       sha256 = ''1fj827xqjs91yqsydf0zmfyw9p4l2jz5yikg3mppz6d7fi8kyrb3'';
     };
-    execjs_1_3_0 = {
-      basename = ''execjs'';
-      meta = {
-        description = ''Run JavaScript code from Ruby'';
-        homepage = ''https://github.com/sstephenson/execjs'';
-        longDescription = ''    ExecJS lets you run JavaScript code from Ruby.
-'';
-      };
-      name = ''execjs-1.3.0'';
-      requiredGems = [ g.multi_json_1_0_4 ];
-      sha256 = ''1sski14wdzfljx2f9j7r09li3rxqwvink8n5v489ykw1sicg6l2s'';
-    };
     ffi_1_0_11 = {
       basename = ''ffi'';
       meta = {
diff --git a/pkgs/development/interpreters/ruby/ruby-19.nix b/pkgs/development/interpreters/ruby/ruby-19.nix
index f47d0e524f7..c5c12831c0a 100644
--- a/pkgs/development/interpreters/ruby/ruby-19.nix
+++ b/pkgs/development/interpreters/ruby/ruby-19.nix
@@ -18,8 +18,8 @@ stdenv.mkDerivation rec {
   name = "ruby-${version}";
   
   src = fetchurl {
-    url = "ftp://ftp.ruby-lang.org/pub/ruby/1.9/${name}.tar.gz";
-    sha256 = "0km3ryc0cs578982x6c3y3n3xr920grnpncmznb447snwd10149v";
+    url = "ftp://ftp.ruby-lang.org/pub/ruby/1.9/${name}.tar.bz2";
+    sha256 = "09jmxz3lqsi5097233hc1wjnzg6z5f4y7kmlkqhskdaj6125jyn6";
   };
 
   # Have `configure' avoid `/usr/bin/nroff' in non-chroot builds.
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   passthru = rec {
     majorVersion = "1.9";
     minorVersion = "3";
-    patchLevel = "0";
+    patchLevel = "125";
     libPath = "lib/ruby/${majorVersion}";
     gemPath = "lib/ruby/gems/${majorVersion}";
   };
diff --git a/pkgs/development/interpreters/ruby/rubygems.nix b/pkgs/development/interpreters/ruby/rubygems.nix
index 4311c6ad5d4..40a43e27453 100644
--- a/pkgs/development/interpreters/ruby/rubygems.nix
+++ b/pkgs/development/interpreters/ruby/rubygems.nix
@@ -1,10 +1,10 @@
 args : with args; 
 rec {
 
-  version = "1.8.15";
+  version = "1.8.17";
   src = fetchurl {
     url = "http://production.cf.rubygems.org/rubygems/${name}.tgz";
-    sha256 = "0crfdaxpcv13x40mb0ccm5n0r3dknw7w7xl87icj99kyqmfx8k51";
+    sha256 = "068sr55r8wiw55bpf93pp07871cbqhxk9cxma6arhd04j7n8ppph";
   };
 
   buildInputs = [ruby makeWrapper];
diff --git a/pkgs/development/libraries/bullet/default.nix b/pkgs/development/libraries/bullet/default.nix
new file mode 100644
index 00000000000..b725f6bbf9f
--- /dev/null
+++ b/pkgs/development/libraries/bullet/default.nix
@@ -0,0 +1,24 @@
+{stdenv, fetchurl, unzip, cmake}:
+
+stdenv.mkDerivation {
+  name = "bullet-2.78";
+  src = fetchurl {
+    url = "http://bullet.googlecode.com/files/bullet-2.78.zip";
+    sha256 = "10l2dclvv0di9mi9qp6xfy9vybx182xp2dyygabacrpr3p75s77k";
+  };
+  buildInputs = [ unzip cmake ];
+  configurePhase = ''
+    cmake -DBUILD_SHARED_LIBS=ON -DBUILD_EXTRAS=OFF -DBUILD_DEMOS=OFF .
+  '';
+
+  meta = {
+    description = "A professional free 3D Game Multiphysics Library";
+    longDescription = ''
+      Bullet 3D Game Multiphysics Library provides state of the art collision
+      detection, soft body and rigid body dynamics. 
+    '';
+    homepage = http://code.google.com/p/bullet/;
+    license = stdenv.lib.licenses.zlib;
+    maintainers = [ "Alexander Foremny <alexanderforemny@googlemail.com>" ];
+  };
+}
diff --git a/pkgs/development/libraries/haskell/http-date/default.nix b/pkgs/development/libraries/haskell/http-date/default.nix
index 1fbcc40a814..a12542e3846 100644
--- a/pkgs/development/libraries/haskell/http-date/default.nix
+++ b/pkgs/development/libraries/haskell/http-date/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "http-date";
-  version = "0.0.1";
-  sha256 = "1dqnglz1l6h14339nd5q8sq90fak64ab8fs9fkhf8ipg5y0pzwbd";
+  version = "0.0.2";
+  sha256 = "18nijf3hswbvcd5amhbccqmgnanmslsmqpd2iixlvwz5hqb3ncvj";
   buildDepends = [ attoparsec ];
   meta = {
     description = "HTTP Date parser/formatter";
diff --git a/pkgs/development/libraries/liblastfm/default.nix b/pkgs/development/libraries/liblastfm/default.nix
index 57a325a7234..24b93221d11 100644
--- a/pkgs/development/libraries/liblastfm/default.nix
+++ b/pkgs/development/libraries/liblastfm/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, ruby, qt4, pkgconfig, libsamplerate, fftwSinglePrec }:
+{ stdenv, fetchurl, ruby, qt4, pkgconfig, libsamplerate, fftwSinglePrec, which }:
 
 let version = "0.3.3"; in
 
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   prefixKey = "--prefix ";
   propagatedBuildInputs = [ qt4 libsamplerate fftwSinglePrec ];
-  buildNativeInputs = [ ruby pkgconfig ];
+  buildNativeInputs = [ ruby pkgconfig which ];
 
   configureFlags = "--release";
 
diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 85c2fa13a93..38eb344621e 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -4,11 +4,11 @@ assert zlib != null;
 
 # If you want to upgrade libpng, look at libpng15 branch
 stdenv.mkDerivation rec {
-  name = "libpng-1.2.46";
+  name = "libpng-1.2.47";
   
   src = fetchurl {
     url = "mirror://sourceforge/libpng/${name}.tar.xz";
-    sha256 = "0rcx4v4khdkrvz7b02fmx7lab2pk1lal4dhx9widv36b7g2xvwzn";
+    sha256 = "1lai3dnzw81y40jr17bdj1qh08hwv9mc1v74yybl7jdx2hiilsvx";
   };
   
   propagatedBuildInputs = [ zlib ];
diff --git a/pkgs/development/libraries/vigra/default.nix b/pkgs/development/libraries/vigra/default.nix
index 93ed2869d0e..83b921dd49b 100644
--- a/pkgs/development/libraries/vigra/default.nix
+++ b/pkgs/development/libraries/vigra/default.nix
@@ -11,10 +11,9 @@ stdenv.mkDerivation rec {
   buildInputs = [ cmake fftw fftwSinglePrec libtiff libpng libjpeg python boost
     numpy hdf5 ];
 
-  cmakeFlags = if (stdenv.system == "x86_64-linux") then
-      "-DCMAKE_CXX_FLAGS=-fPIC -DCMAKE_C_FLAGS=-fPIC"
-    else
-      "";
+  preConfigure = "cmakeFlags+=\" -DVIGRANUMPY_INSTALL_DIR=$out/lib/${python.libPrefix}/site-packages\"";
+  cmakeFlags = stdenv.lib.optionals (stdenv.system == "x86_64-linux")
+      [ "-DCMAKE_CXX_FLAGS=-fPIC" "-DCMAKE_C_FLAGS=-fPIC" ];
 
   meta = {
     description = "Novel computer vision C++ library with customizable algorithms and data structures";
diff --git a/pkgs/development/tools/profiling/systemtap/default.nix b/pkgs/development/tools/profiling/systemtap/default.nix
index 66e4870aa59..c611764cc01 100644
--- a/pkgs/development/tools/profiling/systemtap/default.nix
+++ b/pkgs/development/tools/profiling/systemtap/default.nix
@@ -3,7 +3,7 @@
 , gtkmm, libglademm, boost, perl, sqlite }:
 
 stdenv.mkDerivation rec {
-  name = "systemtap-1.2";
+  name = "systemtap-1.2-${linux.version}";
 
   src = fetchurl {
     url = "http://sources.redhat.com/systemtap/ftp/releases/${name}.tar.gz";
diff --git a/pkgs/os-specific/linux/acpi-call/default.nix b/pkgs/os-specific/linux/acpi-call/default.nix
index 925e2e2e650..3fececf6c6d 100644
--- a/pkgs/os-specific/linux/acpi-call/default.nix
+++ b/pkgs/os-specific/linux/acpi-call/default.nix
@@ -1,13 +1,14 @@
-{stdenv, fetchgit, kernel, ...}:
+{ stdenv, fetchgit, kernel }:
 
 stdenv.mkDerivation {
-  src = fetchgit {
-    url="git://github.com/mkottman/acpi_call.git";
-    rev="4f71ce83392bc52b3497";
-    sha256="1f20516dc7d42bc7d9d71eaa54f48f38cd56b8683062f81d6f3857990056bdd3";
-  };
-  name = "acpi-call";
+  name = "acpi-call-${kernel.version}";
 
+  src = fetchgit {
+    url = "git://github.com/mkottman/acpi_call.git";
+    rev = "4f71ce83392bc52b3497";
+    sha256 = "1f20516dc7d42bc7d9d71eaa54f48f38cd56b8683062f81d6f3857990056bdd3";
+  };
+  
   preBuild = ''
     kernelVersion=$(cd ${kernel}/lib/modules && ls)
     sed -e 's/break/true/' -i test_off.sh
diff --git a/pkgs/os-specific/linux/atheros/0.9.4.nix b/pkgs/os-specific/linux/atheros/0.9.4.nix
index b139867be60..87470da9649 100644
--- a/pkgs/os-specific/linux/atheros/0.9.4.nix
+++ b/pkgs/os-specific/linux/atheros/0.9.4.nix
@@ -17,7 +17,7 @@ postInstall = fullDepEntry (''
 '') [minInit doMakeInstall];
 in
 stdenv.mkDerivation rec {
-	name = "atheros-0.9.4";
+	name = "atheros-0.9.4-${kernel.version}";
 	builder = writeScript (name + "-builder")
 		(textClosure localDefs [doMakeInstall 
 			postInstall doForceShare doPropagate]);
diff --git a/pkgs/os-specific/linux/ati-drivers/default.nix b/pkgs/os-specific/linux/ati-drivers/default.nix
index 248e24c90bd..703895b4f34 100644
--- a/pkgs/os-specific/linux/ati-drivers/default.nix
+++ b/pkgs/os-specific/linux/ati-drivers/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl , kernel, xlibs, which, imake
+{ stdenv, fetchurl, kernel, xlibs, which, imake
 , mesa # for fgl_glxgears
 , libXxf86vm, xf86vidmodeproto # for fglrx_gamma
 , xorg, makeWrapper, glibc, patchelf
@@ -14,33 +14,32 @@
 
 # The gentoo ebuild contains much more magic..
 
-let lib = stdenv.lib;
-    inherit (lib) concatStringsSep;
-in
 # http://wiki.cchtml.com/index.php/Main_Page
 
+assert stdenv.system == "x86_64-linux";
+
 stdenv.mkDerivation rec {
-  name = "ati-drivers-${version}";
+  name = "ati-drivers-${version}-${kernel.version}";
   version = "10-11-x86";
 
   builder = ./builder.sh;
 
   inherit libXxf86vm xf86vidmodeproto;
 
-  src =
-    assert stdenv.system == "x86_64-linux";
-  fetchurl {
+  src = fetchurl {
     url = https://a248.e.akamai.net/f/674/9206/0/www2.ati.com/drivers/linux/ati-driver-installer-10-11-x86.x86_64.run;
     sha256 = "1z33w831ayx1j5lm9d1xv6whkmzsz9v8li3s8c96hwnwki6zpimr";
   };
 
-  buildInputs = [xlibs.libXext xlibs.libX11
-    xlibs.libXrandr which imake makeWrapper
-    patchelf
-  ];
+  buildInputs =
+    [ xlibs.libXext xlibs.libX11
+      xlibs.libXrandr which imake makeWrapper
+      patchelf
+    ];
+    
   inherit kernel glibc /* glibc only used for setting interpreter */;
   
-  LD_LIBRARY_PATH = concatStringsSep ":"
+  LD_LIBRARY_PATH = stdenv.lib.concatStringsSep ":"
     [ "${xorg.libXrandr}/lib"
       "${xorg.libXrender}/lib"
       "${xorg.libXext}/lib"
diff --git a/pkgs/os-specific/linux/bbswitch/default.nix b/pkgs/os-specific/linux/bbswitch/default.nix
index d64701a1d07..502d24d32d8 100644
--- a/pkgs/os-specific/linux/bbswitch/default.nix
+++ b/pkgs/os-specific/linux/bbswitch/default.nix
@@ -3,9 +3,11 @@
 let
 
   version = "0.4.1";
-  name = "bbswitch-${version}";
+  name = "bbswitch-${version}-${kernel.version}";
 
-in stdenv.mkDerivation {
+in
+
+stdenv.mkDerivation {
   inherit name;
 
   src = fetchurl {
diff --git a/pkgs/os-specific/linux/broadcom-sta/default.nix b/pkgs/os-specific/linux/broadcom-sta/default.nix
index 96749dca2b7..1c557301729 100644
--- a/pkgs/os-specific/linux/broadcom-sta/default.nix
+++ b/pkgs/os-specific/linux/broadcom-sta/default.nix
@@ -6,7 +6,8 @@ let version = "5_100_82_112";
 in
 
 stdenv.mkDerivation {
-  name = "broadcom-sta-${version}";
+  name = "broadcom-sta-${version}-${kernel.version}";
+  
   src = fetchurl {
     url = "http://www.broadcom.com/docs/linux_sta/hybrid-portsrc_x86_${bits}-v${version}.tar.gz";
     sha256 = if bits == "32"
diff --git a/pkgs/os-specific/linux/e1000e/default.nix b/pkgs/os-specific/linux/e1000e/default.nix
index b4d92158054..709befd9dc5 100644
--- a/pkgs/os-specific/linux/e1000e/default.nix
+++ b/pkgs/os-specific/linux/e1000e/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, kernel }:
 
 stdenv.mkDerivation {
-  name = "e1000e-1.5.1";
+  name = "e1000e-1.5.1-${kernel.version}";
 
   src = fetchurl {
     url = "http://downloads.sourceforge.net/e1000/e1000e-1.5.1.tar.gz";
diff --git a/pkgs/os-specific/linux/exmap/default.nix b/pkgs/os-specific/linux/exmap/default.nix
index a7fb22f95e9..c39b2acf4e1 100644
--- a/pkgs/os-specific/linux/exmap/default.nix
+++ b/pkgs/os-specific/linux/exmap/default.nix
@@ -1,7 +1,7 @@
 { fetchurl, stdenv, kernel, pkgconfig, gtkmm, boost, pcre }:
 
 stdenv.mkDerivation rec {
-  name = "exmap-0.10";
+  name = "exmap-0.10-${kernel.version}";
 
   src = fetchurl {
     url = "http://www.berthels.co.uk/exmap/download/${name}.tgz";
diff --git a/pkgs/os-specific/linux/frandom/default.nix b/pkgs/os-specific/linux/frandom/default.nix
index 9f07e7c8eb0..fb2c50a778d 100644
--- a/pkgs/os-specific/linux/frandom/default.nix
+++ b/pkgs/os-specific/linux/frandom/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, kernel }:
 
 stdenv.mkDerivation rec {
-  name = "frandom-1.1";
+  name = "frandom-1.1-${kernel.version}";
 
   src = fetchurl {
     url = "http://sourceforge.net/projects/frandom/files/${name}.tar.gz";
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   buildInputs = [];
 
   meta = {
-    description = "A very fast random number generator kernel module.";
+    description = "A very fast random number generator kernel module";
     homepage = http://frandom.sourceforge.net/;
     license = "GPLv2";
     maintainers = [ stdenv.lib.maintainers.bluescreen303 ];
diff --git a/pkgs/os-specific/linux/iscsitarget/default.nix b/pkgs/os-specific/linux/iscsitarget/default.nix
index 03d01db2785..214fae01cfc 100644
--- a/pkgs/os-specific/linux/iscsitarget/default.nix
+++ b/pkgs/os-specific/linux/iscsitarget/default.nix
@@ -1,14 +1,16 @@
 { stdenv, fetchurl, kernel, module_init_tools}:
 
 stdenv.mkDerivation rec {
-  name = "iscsitarget-1.4.20.2";
+  name = "iscsitarget-1.4.20.2-${kernel.version}";
+  
   src = fetchurl {
     url = "mirror://sourceforge/iscsitarget/iscsitarget/1.4.20.2/${name}.tar.gz";
     sha256 = "126kp0yc7vmvdbaw2xfav89340b0h91dvvyib5qbvyrq40n8wg0g";
   };
   
   KSRC = "${kernel}/lib/modules/*/build";
-  DESTDIR="$(out)";
+  
+  DESTDIR = "$(out)";
   
   preConfigure = ''
     export PATH=$PATH:${module_init_tools}/sbin
@@ -18,8 +20,8 @@ stdenv.mkDerivation rec {
   buildInputs = [ module_init_tools ];
   
   meta = {
-    description = "iSCSI Enterprise Target (IET) software is for building an iSCSI storage system on Linux.";
+    description = "iSCSI Enterprise Target (IET), software for building an iSCSI storage system on Linux";
     license = "GPLv2+";
-    homepage = http://iscsitarget.sourceforge.net ;
+    homepage = http://iscsitarget.sourceforge.net;
   };
 }
diff --git a/pkgs/os-specific/linux/klibc/default.nix b/pkgs/os-specific/linux/klibc/default.nix
index e1b8c0d2836..e1f347af23c 100644
--- a/pkgs/os-specific/linux/klibc/default.nix
+++ b/pkgs/os-specific/linux/klibc/default.nix
@@ -1,13 +1,4 @@
-{
-  stdenv,
-  fetchurl,
-  perl,
-  bison,
-  mktemp,
-  linuxHeaders,
-  linuxHeadersCross,
-  kernel ? null
-}:
+{ stdenv, fetchurl, perl, bison, mktemp, linuxHeaders, linuxHeadersCross, kernel ? null }:
 
 assert stdenv.isLinux;
 
@@ -17,7 +8,7 @@ let
 in
 
 stdenv.mkDerivation {
-  name = "klibc-${version}";
+  name = "klibc-${version}${stdenv.lib.optionalString (kernel != null) "-${kernel.version}"}";
 
   src = fetchurl {
     url = "http://ftp.eu.openbsd.org/pub/linux/libs/klibc/1.5/klibc-${version}.tar.bz2";
diff --git a/pkgs/os-specific/linux/kqemu/1.3.0pre11.nix b/pkgs/os-specific/linux/kqemu/1.3.0pre11.nix
deleted file mode 100644
index d9dc076d92f..00000000000
--- a/pkgs/os-specific/linux/kqemu/1.3.0pre11.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-args : with args;
-rec {
-  name = "kqemu-"+version;
-  src = fetchurl {
-    url = http://www.nongnu.org/qemu/kqemu-1.3.0pre11.tar.gz;
-    sha256 = "03svg2x52ziglf9r9irf6ziiz8iwa731fk1mdskwdip5jxbyy6jl";
-  };
-
-  buildInputs = [];
-  configureFlags = [''--PREFIx=$out'' ''--kernel-path=$(ls -d ${kernel}/lib/modules/*/build)''];
-  debugStep = fullDepEntry (''
-  	cat config-host.mak
-  '') ["minInit"];
-  preConfigure = fullDepEntry ('' 
-    sed -e 's/`uname -r`/'"$(basename ${kernel}/lib/modules/*)"'/' -i install.sh
-    sed -e '/kernel_path=/akernel_path=$out$kernel_path' -i install.sh
-    sed -e '/depmod/d' -i install.sh
-    cat install.sh
-    sed -e '/linux\/ioctl.h/a#include <linux\/sched.h>' -i kqemu-linux.c
-  '') ["minInit" "doUnpack"];
-  fixInc = {
-    text = ''
-      sed -e '/#include/i#include <linux/sched.h>' -i kqemu-linux.c
-    '';
-    deps = ["minInit" "doUnpack"];
-  };
-  fixMemFunc = {
-    text=''
-      sed -e 's/memset/mymemset/g; s/memcpy/mymemcpy/g; s/void [*]my/static void *my/g' -i common/kernel.c
-    '';
-    deps = ["minInit" "doUnpack"];
-  };
-  phaseNames = ["fixInc" "fixMemFunc" "preConfigure" "doConfigure" "debugStep" "doMakeInstall"];
-
-  meta = {
-    description = "Kernel module for Qemu acceleration";
-  }; 
-}
diff --git a/pkgs/os-specific/linux/kqemu/1.4.0pre1.nix b/pkgs/os-specific/linux/kqemu/default.nix
similarity index 59%
rename from pkgs/os-specific/linux/kqemu/1.4.0pre1.nix
rename to pkgs/os-specific/linux/kqemu/default.nix
index a24e65b378f..c703ca4e4a4 100644
--- a/pkgs/os-specific/linux/kqemu/1.4.0pre1.nix
+++ b/pkgs/os-specific/linux/kqemu/default.nix
@@ -1,18 +1,18 @@
-{ stdenv, fetchurl, kernel, perl, fullDepEntry, ... }:
+{ stdenv, fetchurl, kernel, perl }:
 
 stdenv.mkDerivation rec {
-  name = "kqemu-1.4.0pre1";
+  name = "kqemu-1.4.0pre1-${kernel.version}";
   
   src = fetchurl {
     url = "http://www.nongnu.org/qemu/${name}.tar.gz";
     sha256 = "14dlmawn3gia1j401ag5si5k1a1vav7jpv86rl37p1hwmr7fihxs";
   };
 
-  buildInputs = [perl];
+  buildInputs = [ perl ];
   
-  configureFlags = [''--PREFIX=$out'' ''--kernel-path=$(ls -d ${kernel}/lib/modules/*/build)''];
+  configureFlags = [ ''--PREFIX=$out'' ''--kernel-path=$(ls -d ${kernel}/lib/modules/*/build)'' ];
   
-  preConfigure = fullDepEntry ('' 
+  preConfigure = '' 
     sed -e '/#include/i#include <linux/sched.h>' -i kqemu-linux.c
 
     sed -e 's/memset/mymemset/g; s/memcpy/mymemcpy/g; s/void [*]my/static void *my/g' -i common/kernel.c
@@ -20,11 +20,9 @@ stdenv.mkDerivation rec {
     sed -e '/kernel_path=/akernel_path=$out$kernel_path' -i install.sh
     sed -e '/depmod/d' -i install.sh
     cat install.sh
-  '') ["minInit" "doUnpack"]; 
+  '';
 
-  phaseNames = ["preConfigure" "doConfigure" "doMakeInstall"];
-  
   meta = {
-    description = "Kernel module for Qemu acceleration";
+    description = "Kernel module for QEMU acceleration";
   }; 
 }
diff --git a/pkgs/os-specific/linux/ndiswrapper/default.nix b/pkgs/os-specific/linux/ndiswrapper/default.nix
index 75ff3fba3c6..c41649e0285 100644
--- a/pkgs/os-specific/linux/ndiswrapper/default.nix
+++ b/pkgs/os-specific/linux/ndiswrapper/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, kernel, perl }:
 
 stdenv.mkDerivation {
-  name = "ndiswrapper-1.56-stable";
+  name = "ndiswrapper-1.56-${kernel.version}";
 
   # need at least .config and include 
   inherit kernel;
diff --git a/pkgs/os-specific/linux/open-iscsi/default.nix b/pkgs/os-specific/linux/open-iscsi/default.nix
index 80703990778..eccdde30b13 100644
--- a/pkgs/os-specific/linux/open-iscsi/default.nix
+++ b/pkgs/os-specific/linux/open-iscsi/default.nix
@@ -1,14 +1,15 @@
 { stdenv, fetchurl, kernel}:
 
 stdenv.mkDerivation rec {
-  name = "open-iscsi-2.0-871";
+  name = "open-iscsi-2.0-871-${kernel.version}";
+  
   src = fetchurl {
     url = "http://www.open-iscsi.org/bits/${name}.tar.gz";
     sha256 = "1jvx1agybaj4czhz41bz37as076spicsmlh5pjksvwl2mr38gsmw";
   };
   
   KSRC = "${kernel}/lib/modules/*/build";
-  DESTDIR="$(out)";
+  DESTDIR = "$(out)";
   
   preConfigure = ''
     sed -i 's|/usr/|/|' Makefile
@@ -17,8 +18,8 @@ stdenv.mkDerivation rec {
   patches = [./kernel.patch];
   
   meta = {
-    description = "Open-iSCSI project is a high performance, transport independent, multi-platform implementation of RFC3720.";
+    description = "A high performance, transport independent, multi-platform implementation of RFC3720";
     license = "GPLv2+";
-    homepage = http://www.open-iscsi.org ;
+    homepage = http://www.open-iscsi.org;
   };
 }
diff --git a/pkgs/os-specific/linux/v86d/default.nix b/pkgs/os-specific/linux/v86d/default.nix
index c8924f91c57..aedfe9ac686 100644
--- a/pkgs/os-specific/linux/v86d/default.nix
+++ b/pkgs/os-specific/linux/v86d/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl, klibc, kernel, withKlibc ? true}:
 
 stdenv.mkDerivation rec {
-  name = "v86d-0.1.10";
+  name = "v86d-0.1.10-${kernel.version}";
 
   src = fetchurl {
     url = "http://dev.gentoo.org/~spock/projects/uvesafb/archive/${name}.tar.bz2";
diff --git a/pkgs/tools/networking/telnet/default.nix b/pkgs/tools/networking/telnet/default.nix
index ba00bb6b598..c0dbf710ffb 100644
--- a/pkgs/tools/networking/telnet/default.nix
+++ b/pkgs/tools/networking/telnet/default.nix
@@ -14,5 +14,6 @@ stdenv.mkDerivation {
     description = "A client and daemon for the Telnet protocol";
     homepage = ftp://ftp.suse.com/pub/people/kukuk/ipv6/;
     license = "BSD";
+    platforms = stdenv.lib.platforms.gnu;
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8b845d03c7f..d405b01bcc3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2766,7 +2766,7 @@ let
   rubygemsFun = ruby: builderDefsPackage (import ../development/interpreters/ruby/rubygems.nix) {
     inherit ruby makeWrapper;
   };
-  rubygems = rubygemsFun ruby;
+  rubygems = hiPrio (rubygemsFun ruby);
 
   rq = callPackage ../applications/networking/cluster/rq { };
 
@@ -5744,9 +5744,7 @@ let
 
     wis_go7007 = callPackage ../os-specific/linux/wis-go7007 { };
 
-    kqemu = builderDefsPackage ../os-specific/linux/kqemu/1.4.0pre1.nix {
-      inherit kernel perl;
-    };
+    kqemu = callPackage ../os-specific/linux/kqemu { };
 
     klibc = callPackage ../os-specific/linux/klibc {
       linuxHeaders = glibc.kernelHeaders;
@@ -8620,4 +8618,6 @@ let
 
   misc = import ../misc/misc.nix { inherit pkgs stdenv; };
 
+  bullet = callPackage ../development/libraries/bullet {};
+
 }; in pkgs