diff --git a/pkgs/desktops/kde-4/support/akode.nix b/pkgs/desktops/kde-4/support/akode.nix
index 1385def6b559..8fdf6736572e 100644
--- a/pkgs/desktops/kde-4/support/akode.nix
+++ b/pkgs/desktops/kde-4/support/akode.nix
@@ -2,12 +2,6 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "akode-2.0.0dev";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/akode;
-	rev = 732646;
-	md5 = "6629ffedc42c020d2e8645910a4efdf5";
-  };
-
+  src = svnSrc "akode" "0xkzv386wvh16njjv8z84mg3czp7j7n60lwhwns5fwqhx1s30h5y";
   buildInputs = [ cmake qt openssl gettext cyrus_sasl alsaLib ];
 }
diff --git a/pkgs/desktops/kde-4/support/default.nix b/pkgs/desktops/kde-4/support/default.nix
index af1dc175bedd..426a5811bd79 100644
--- a/pkgs/desktops/kde-4/support/default.nix
+++ b/pkgs/desktops/kde-4/support/default.nix
@@ -1,36 +1,22 @@
-args:
+oldArgs:
+let
+	args = oldArgs // {
+	svnSrc = name: hash:
+	oldArgs.fetchsvn {
+		url = "svn://anonsvn.kde.org/home/kde/trunk/kdesupport/${name}";
+		rev = 747269;
+		sha256 = hash;
+	};
+	};
+in
 rec {
-	qca = (import ./qca.nix) args;
 	akode = (import ./akode.nix) args;
-	gmm = (import ./gmm.nix) args;
 	eigen = (import ./eigen.nix) args;
-	taglib = (import ./taglib.nix) args;
+	gmm = (import ./gmm.nix) args;
+	qca = (import ./qca.nix) args;
+	qimageblitz = (import ./qimageblitz.nix) args;
 	soprano = (import ./soprano.nix) args;
 	strigi = (import ./strigi.nix) args;
-	qimageblitz = (import ./qimageblitz.nix) args;
+	taglib = (import ./taglib.nix) args;
 	all = [qca gmm eigen taglib soprano strigi qimageblitz];
 }
-#args: with args;
-#
-#stdenv.mkDerivation {
-#  name = "kdesupport-4.0svn-r729462";
-#  
-#  src = fetchsvn {
-#    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport;
-#	rev = 729462;
-#	md5 = "aa50ec8e5c8d49e1dfd53143345cb4b3";
-#  };
-#
-#  propagatedBuildInputs = [
-#	exiv2
-#	cmake inputproto kbproto scrnsaverproto xextproto xf86miscproto xf86vidmodeproto
-#	xineramaproto xproto libICE libX11 libXau libXcomposite libXcursor
-#	libXdamage libXdmcp libXext libXfixes libXft libXi libXpm libXrandr
-#	libXrender libXScrnSaver libXt libXtst libXv libXxf86misc libxkbfile zlib
-#	perl qt openssl pcre pkgconfig libjpeg libpng libtiff libxml2 libxslt expat
-#    libtool freetype bzip2 shared_mime_info alsaLib libungif cups
-#	gettext cluceneCore redland stdenv.gcc.libc dbus bison cppunit
-#  ];
-#  CLUCENE_HOME=cluceneCore;
-#  patchPhase = "sed -e '/set(qca_PLUGINSDIR/s@\${QT_PLUGINS_DIR}@\${CMAKE_INSTALL_PREFIX}/plugins@' -i ../qca/CMakeLists.txt";
-#}
diff --git a/pkgs/desktops/kde-4/support/eigen.nix b/pkgs/desktops/kde-4/support/eigen.nix
index a3ac9eff3910..163683a29215 100644
--- a/pkgs/desktops/kde-4/support/eigen.nix
+++ b/pkgs/desktops/kde-4/support/eigen.nix
@@ -2,12 +2,6 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "eigen-1.0.5";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/eigen;
-	rev = 732646;
-	md5 = "f91ad5d3dd992984fb61107fd9050a36";
-  };
-
+  src = svnSrc "eigen" "0dr2gzrf17bdgxj4f9ibk7x5j7fqwwjsl800dzfvrhgj6v1mxm4x";
   buildInputs = [ cmake ];
 }
diff --git a/pkgs/desktops/kde-4/support/gmm.nix b/pkgs/desktops/kde-4/support/gmm.nix
index d32c9b9f765e..843f9f6aaed5 100644
--- a/pkgs/desktops/kde-4/support/gmm.nix
+++ b/pkgs/desktops/kde-4/support/gmm.nix
@@ -2,12 +2,6 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "gmm-svn";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/gmm;
-	rev = 732646;
-	md5 = "09ee4cfcbb3c428bc681c2da022648bf";
-  };
-
+  src = svnSrc "gmm" "0qvx9jf17z0mpwy8k6w6bla94gkkslkiv5w98aajfcq34n0zxcpc";
   buildInputs = [ cmake ];
 }
diff --git a/pkgs/desktops/kde-4/support/qca.nix b/pkgs/desktops/kde-4/support/qca.nix
index 64b00da91ce7..fda435c7bffe 100644
--- a/pkgs/desktops/kde-4/support/qca.nix
+++ b/pkgs/desktops/kde-4/support/qca.nix
@@ -2,14 +2,7 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "qca-2.0.0dev";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/qca;
-	rev = 732646;
-	md5 = "1df54bf3bf327b14ea1948f9080717c3";
-  };
-
+  src = svnSrc "qca" "0dycmk8fn57mz2pfxck6d0g833fqg9zrw17789vxb4ks0xz0p3zp";
   buildInputs = [ cmake qt openssl gettext cyrus_sasl libgcrypt gnupg ];
-
   patchPhase = "sed -e '/set(qca_PLUGINSDIR/s@\${QT_PLUGINS_DIR}@\${CMAKE_INSTALL_PREFIX}/plugins@' -i ../CMakeLists.txt";
 }
diff --git a/pkgs/desktops/kde-4/support/qimageblitz.nix b/pkgs/desktops/kde-4/support/qimageblitz.nix
index fe6a03ca7c78..3364b4eac5da 100644
--- a/pkgs/desktops/kde-4/support/qimageblitz.nix
+++ b/pkgs/desktops/kde-4/support/qimageblitz.nix
@@ -2,12 +2,6 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "qimageblitz-4.0.0svn";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/qimageblitz;
-	rev = 732646;
-	md5 = "c37fa505368071ec501e966225e30c78";
-  };
-
+  src = svnSrc "qimageblitz" "0gi78bald70bc540jqcpa70x23hycywibn4raf5602hv4d5n8mnx";
   buildInputs = [cmake qt];
 }
diff --git a/pkgs/desktops/kde-4/support/soprano.nix b/pkgs/desktops/kde-4/support/soprano.nix
index 0f453d726d77..0cb490b9db7e 100644
--- a/pkgs/desktops/kde-4/support/soprano.nix
+++ b/pkgs/desktops/kde-4/support/soprano.nix
@@ -2,13 +2,7 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "soprano-1.9.0svn";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/soprano;
-	rev = 732646;
-	md5 = "c3b43544536f0f8061e4afeb9e368072";
-  };
-
+  src = svnSrc "soprano" "02xfp7g41ahxwczkxipyi13rav6akhwgspxdhgk5gm94rg10hq2l";
   CLUCENE_HOME=cluceneCore;
   buildInputs = [ cmake qt cluceneCore redland ];
 }
diff --git a/pkgs/desktops/kde-4/support/strigi.nix b/pkgs/desktops/kde-4/support/strigi.nix
index f0e0fe614be9..d1ec98ea25f9 100644
--- a/pkgs/desktops/kde-4/support/strigi.nix
+++ b/pkgs/desktops/kde-4/support/strigi.nix
@@ -2,13 +2,7 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "strigi-svn";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/strigi;
-	rev = 732646;
-	md5 = "15762f5a406ef84bc1cdd776b2ca9a82";
-  };
-
+  src = svnSrc "strigi" "0dp145n93bqp91lvk2n10mghppyhdm3anh1l3a18d20hrvsm42z5";
   CLUCENE_HOME=cluceneCore;
   buildInputs = [ cmake zlib cluceneCore bzip2 libxml2 qt dbus
   log4cxx stdenv.gcc.libc exiv2 bison cppunit perl ];
diff --git a/pkgs/desktops/kde-4/support/taglib.nix b/pkgs/desktops/kde-4/support/taglib.nix
index 6aecb7a91ef2..9a2acc96636b 100644
--- a/pkgs/desktops/kde-4/support/taglib.nix
+++ b/pkgs/desktops/kde-4/support/taglib.nix
@@ -2,12 +2,6 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "taglib-1.4svn";
-  
-  src = fetchsvn {
-    url = svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib;
-	rev = 732646;
-	md5 = "647d68a76858cf3a667656c486b0a8c2";
-  };
-
+  src = svnSrc "taglib" "1myfgykflbs3l1mrzg4iv8rb1mbd0vpmzl5dnnslfi9b0xg6ydip";
   buildInputs = [ cmake zlib ];
 }