diff --git a/pkgs/desktops/kde-4.5/bindings/default.nix b/pkgs/desktops/kde-4.5/bindings/default.nix
index ce8f841726e..eae386030d3 100644
--- a/pkgs/desktops/kde-4.5/bindings/default.nix
+++ b/pkgs/desktops/kde-4.5/bindings/default.nix
@@ -1,42 +1,37 @@
-{ stdenv, fetchurl, lib, cmake, perl, python, sip, pyqt4, zlib, libpng, freetype, fontconfig, qt4, boost
+{ kdePackage, lib, cmake, perl, python, sip, pyqt4, zlib, libpng, freetype, fontconfig, qt4, boost
 , kdelibs, kdepimlibs, automoc4, soprano, akonadi, attica, polkit_qt_1, ruby
 }:
 
 # This function will only build the pykde4 module. I don't need the other bindings and
 # some bindings are even broken.
 
-stdenv.mkDerivation rec {
-  name = "kdebindings-4.4.95";
-  
-  src = fetchurl {
-    url = "mirror://kde/unstable/4.4.95/src/${name}.tar.bz2";
-    sha256 = "115xl1jcpnyr71573if0nvb3hy8z5hxqy5qlvc71pdprzrp78xbc";
-  };
+kdePackage rec {
+  pn = "kdebindings";
+  v = "4.5.0";
+  sha256 = "0x8c98gbp2rm3dckzw3l0jh2ch5g9sb2prmilwzl8d5psyhx39n6";
 
   patches = [ ./python-site-packages-install-dir.diff ];
 
   preConfigure = ''
     CUSTOM_RUBY_SITE_ARCH_DIR=$(ruby -r rbconfig -e "print Config::CONFIG['sitearchdir']" | sed -e "s@${ruby}@$out@")
     CUSTOM_RUBY_SITE_LIB_DIR=$(ruby -r rbconfig -e "print Config::CONFIG['sitelibdir']" | sed -e "s@${ruby}@$out@")
-	CUSTOM_PERL_SITE_ARCH_DIR=$(perl -MConfig -e 'print $Config{sitearch}' | sed -e "s@${perl}@$out@")
+    CUSTOM_PERL_SITE_ARCH_DIR=$(perl -MConfig -e 'print $Config{sitearch}' | sed -e "s@${perl}@$out@")
     cmakeFlagsArray=(
-	  -DSIP_DEFAULT_SIP_DIR=$out/share/sip
+      -DSIP_DEFAULT_SIP_DIR=$out/share/sip
       -DCUSTOM_RUBY_SITE_ARCH_DIR=$CUSTOM_RUBY_SITE_ARCH_DIR
-	  -DCUSTOM_RUBY_SITE_LIB_DIR=$CUSTOM_RUBY_SITE_LIB_DIR
-	  -DCUSTOM_PERL_SITE_ARCH_DIR=$CUSTOM_PERL_SITE_ARCH_DIR
-	)
+      -DCUSTOM_RUBY_SITE_LIB_DIR=$CUSTOM_RUBY_SITE_LIB_DIR
+      -DCUSTOM_PERL_SITE_ARCH_DIR=$CUSTOM_PERL_SITE_ARCH_DIR
+    )
   '';
   
   # Okular seems also an optional depenedency which I left out
   buildInputs = [ cmake perl python sip pyqt4 zlib libpng freetype fontconfig qt4 boost
-		  kdelibs kdepimlibs automoc4 soprano akonadi attica polkit_qt_1 ruby ];
+          kdelibs kdepimlibs automoc4 soprano akonadi attica polkit_qt_1 ruby ];
 
   meta = {
     description = "KDE bindings";
     longDescription = "Provides KDE bindings for several languages such as Java, Smoke and Python";
     license = "LGPL";
-    homepage = http://www.kde.org;
-	inherit (kdelibs.meta) maintainers;
   };
 }
 
diff --git a/pkgs/desktops/kde-4.5/bindings/python-site-packages-install-dir.diff b/pkgs/desktops/kde-4.5/bindings/python-site-packages-install-dir.diff
index d1a58201b5f..7fe64e7eff5 100644
--- a/pkgs/desktops/kde-4.5/bindings/python-site-packages-install-dir.diff
+++ b/pkgs/desktops/kde-4.5/bindings/python-site-packages-install-dir.diff
@@ -39,7 +39,7 @@ diff --git a/python/pykde4/tools/pykdeuic4/CMakeLists.txt b/python/pykde4/tools/
 index ea711ba..115c777 100644
 --- a/python/pykde4/tools/pykdeuic4/CMakeLists.txt
 +++ b/python/pykde4/tools/pykdeuic4/CMakeLists.txt
-@@ -1,5 +1,5 @@
+@@ -1,5 +1,9 @@
  
 -PYTHON_INSTALL(kde4.py ${PYTHON_SITE_PACKAGES_DIR}/PyQt4/uic/widget-plugins/)
 -PYTHON_INSTALL(pykdeuic4.py ${PYTHON_SITE_PACKAGES_DIR}/PyQt4/uic/)
@@ -47,4 +47,8 @@ index ea711ba..115c777 100644
 +PYTHON_INSTALL(pykdeuic4.py ${PYTHON_SITE_PACKAGES_INSTALL_DIR}/PyQt4/uic/)
  find_path(cmake_module_dir create_exe_symlink.cmake ${CMAKE_MODULE_PATH})
 -INSTALL(CODE "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -DTARGET=${PYTHON_SITE_PACKAGES_DIR}/PyQt4/uic/pykdeuic4.py -DLINK_NAME=${BIN_INSTALL_DIR}/pykdeuic4 -P ${cmake_module_dir}/create_exe_symlink.cmake)" )
-+INSTALL(CODE "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -DTARGET=${PYTHON_SITE_PACKAGES_INSTALL_DIR}/PyQt4/uic/pykdeuic4.py -DLINK_NAME=${BIN_INSTALL_DIR}/pykdeuic4 -P ${cmake_module_dir}/create_exe_symlink.cmake)" )
++IF(IS_ABSOLUTE ${PYTHON_SITE_PACKAGES_INSTALL_DIR})
++  INSTALL(CODE "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -DTARGET=${PYTHON_SITE_PACKAGES_INSTALL_DIR}/PyQt4/uic/pykdeuic4.py -DLINK_NAME=${BIN_INSTALL_DIR}/pykdeuic4 -P ${cmake_module_dir}/create_exe_symlink.cmake)" )
++ELSE(IS_ABSOLUTE ${PYTHON_SITE_PACKAGES_INSTALL_DIR})
++  INSTALL(CODE "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -DTARGET=${CMAKE_INSTALL_PREFIX}/${PYTHON_SITE_PACKAGES_INSTALL_DIR}/PyQt4/uic/pykdeuic4.py -DLINK_NAME=${BIN_INSTALL_DIR}/pykdeuic4 -P ${cmake_module_dir}/create_exe_symlink.cmake)" )
++ENDIF(IS_ABSOLUTE ${PYTHON_SITE_PACKAGES_INSTALL_DIR})