diff --git a/pkgs/development/python-modules/pyqt/4.7.nix b/pkgs/development/python-modules/pyqt/4.7.nix
deleted file mode 100644
index eb09a32d00c6..000000000000
--- a/pkgs/development/python-modules/pyqt/4.7.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{stdenv, fetchurl, python, sip, qt4}:
-
-stdenv.mkDerivation {
-  name = "pyqt-x11-gpl-4.7.2";
-  
-  src = fetchurl {
-    url = http://www.riverbankcomputing.co.uk/static/Downloads/PyQt4/PyQt-x11-gpl-4.7.2.tar.gz;
-    sha256 = "097gxdr7jqv5a58z89djylm2b21x83crqn2fjsr5zmwhc0zwj5yv";
-  };
-  
-  configurePhase = "python ./configure.py --confirm-license -b $out/bin -d $out/lib/${python.libPrefix}/site-packages -v $out/share/sip -p $out/plugins";
-  
-  buildInputs = [ python sip qt4 ];
-  
-  meta = {
-    description = "Python bindings for Qt";
-    license = "GPL";
-    homepage = http://www.riverbankcomputing.co.uk;
-    maintainers = [ stdenv.lib.maintainers.sander ];
-    platforms = stdenv.lib.platforms.mesaPlatforms;
-  };
-}
diff --git a/pkgs/development/python-modules/pyqt/default.nix b/pkgs/development/python-modules/pyqt/default.nix
index 4357a4c0ed0d..eb09a32d00c6 100644
--- a/pkgs/development/python-modules/pyqt/default.nix
+++ b/pkgs/development/python-modules/pyqt/default.nix
@@ -1,11 +1,11 @@
 {stdenv, fetchurl, python, sip, qt4}:
 
 stdenv.mkDerivation {
-  name = "pyqt-x11-gpl-4.5.4";
+  name = "pyqt-x11-gpl-4.7.2";
   
   src = fetchurl {
-    url = http://pyqwt.sourceforge.net/support/PyQt-x11-gpl-4.5.4.tar.gz; # Not downloading from riverbank, since they remove older releases
-    sha256 = "1a55zng6yhnbk5swc02bkbyccdgf0f0v94yxk9v5a43hv9xnrl5k";
+    url = http://www.riverbankcomputing.co.uk/static/Downloads/PyQt4/PyQt-x11-gpl-4.7.2.tar.gz;
+    sha256 = "097gxdr7jqv5a58z89djylm2b21x83crqn2fjsr5zmwhc0zwj5yv";
   };
   
   configurePhase = "python ./configure.py --confirm-license -b $out/bin -d $out/lib/${python.libPrefix}/site-packages -v $out/share/sip -p $out/plugins";
diff --git a/pkgs/development/python-modules/python-sip/4.10.nix b/pkgs/development/python-modules/python-sip/4.10.nix
deleted file mode 100644
index c64d7be52f70..000000000000
--- a/pkgs/development/python-modules/python-sip/4.10.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ stdenv, fetchurl, python }:
-
-stdenv.mkDerivation rec {
-  name = "sip-4.10.1";
-  
-  src = fetchurl {
-    url = "http://www.riverbankcomputing.co.uk/static/Downloads/sip4/${name}.tar.gz";
-    sha256 = "16pdk86amcl4hnc9vv2y1ihl8ym9hjkh49andm4jahv4630qhc9h";
-  };
-  
-  configurePhase = "python ./configure.py -d $out/lib/${python.libPrefix}/site-packages -b $out/bin -e $out/include";
-  
-  buildInputs = [ python ];
-  
-  meta = {
-    description = "Creates C++ bindings for Python modules";
-    license = "GPL";
-    maintainers = [ stdenv.lib.maintainers.sander ];
-  };
-}
diff --git a/pkgs/development/python-modules/python-sip/default.nix b/pkgs/development/python-modules/python-sip/default.nix
index 3fb827e4600e..c64d7be52f70 100644
--- a/pkgs/development/python-modules/python-sip/default.nix
+++ b/pkgs/development/python-modules/python-sip/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, python }:
 
-stdenv.mkDerivation {
-  name = "sip-4.8.2";
+stdenv.mkDerivation rec {
+  name = "sip-4.10.1";
   
   src = fetchurl {
-    url = http://pyqwt.sourceforge.net/support/sip-4.8.2.tar.gz; # Not downloading from riverbank, since they remove older releases
-    sha256 = "1afr2qaibzgf8fq4fmc31jz9hvbwxbg5jvl68ygvkkdvnbg2kfrf";
+    url = "http://www.riverbankcomputing.co.uk/static/Downloads/sip4/${name}.tar.gz";
+    sha256 = "16pdk86amcl4hnc9vv2y1ihl8ym9hjkh49andm4jahv4630qhc9h";
   };
   
   configurePhase = "python ./configure.py -d $out/lib/${python.libPrefix}/site-packages -b $out/bin -e $out/include";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index de1cbf123241..612343cd7079 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4818,14 +4818,9 @@ let
     qt4Support = false;
   };
 
-  popplerQt45 = poppler.override {
+  popplerQt4 = poppler.override {
+    inherit qt4;
     qt4Support = true;
-    qt4 = qt45;
-  };
-
-  popplerQt46 = poppler.override {
-    qt4Support = true;
-    qt4 = qt46;
   };
 
   popt = import ../development/libraries/popt {
@@ -5362,24 +5357,12 @@ let
     inherit stdenv fetchurl rpm cpio python wirelesstools gettext;
   };
 
-  sip48 = import ../development/python-modules/python-sip {
+  sip = import ../development/python-modules/python-sip {
     inherit stdenv fetchurl python;
   };
 
-  sip410 = import ../development/python-modules/python-sip/4.10.nix {
-    inherit stdenv fetchurl python;
-  };
-
-  pyqt45 = import ../development/python-modules/pyqt {
-    inherit stdenv fetchurl python;
-    qt4 = qt45;
-    sip = sip48;
-  };
-
-  pyqt47 = import ../development/python-modules/pyqt/4.7.nix {
-    inherit stdenv fetchurl python;
-    qt4 = qt46;
-    sip = sip410;
+  pyqt4 = import ../development/python-modules/pyqt {
+    inherit stdenv fetchurl python qt4 sip;
   };
 
   pyx = import ../development/python-modules/pyx {
@@ -6865,20 +6848,11 @@ let
 
   calibre = makeOverridable (import ../applications/misc/calibre) {
     inherit stdenv fetchurl libpng imagemagick pkgconfig libjpeg fontconfig podofo
-      qt4 makeWrapper unrar pil chmlib;
+      qt4 makeWrapper unrar pil chmlib popplerQt4 pyqt4 sip;
     python = python26Full;
-    popplerQt4 = popplerQt45;
-    pyqt4 = pyqt45;
-    sip = sip48;
     inherit (python26Packages) mechanize lxml dateutil cssutils beautifulsoap;
   };
 
-  calibreQt46 = calibre.override {
-    popplerQt4 = popplerQt46;
-    pyqt4 = pyqt47;
-    sip = sip410;
-  };
-
   carrier = builderDefsPackage (import ../applications/networking/instant-messengers/carrier/2.5.0.nix) {
     inherit fetchurl stdenv pkgconfig perl perlXMLParser libxml2 openssl nss
       gtkspell aspell gettext ncurses avahi dbus dbus_glib python
@@ -8784,10 +8758,6 @@ let
 
   kde44 = makeOverridable (import ../desktops/kde-4.4) (pkgs // {
     openexr = openexr_1_6_1;
-    qt4 = qt46;
-    popplerQt4 = popplerQt46;
-    sip = sip410;
-    pyqt4 = pyqt47;
   });
 
   ### SCIENCE