diff --git a/pkgs/tools/networking/p2p/bit-tornado/default.nix b/pkgs/tools/networking/p2p/bit-tornado/default.nix
index 19752082b0e..98c53fdc3a7 100644
--- a/pkgs/tools/networking/p2p/bit-tornado/default.nix
+++ b/pkgs/tools/networking/p2p/bit-tornado/default.nix
@@ -10,17 +10,12 @@ stdenv.mkDerivation {
   buildInputs = [python];
 
   buildPhase = " ";
-  installPhase = "python setup.py install --prefix=$out ;"+
-	" echo 'export PYTHONPATH=$PYTHONPATH:'$out'/lib/python2.4/site-packages:"+
-	wxPython26+"/lib/python2.4/site-packages:"+
-	wxPython26+"/lib/python2.6/site-packages:"+
-	"'$out'/lib/python2.5/site-packages:"+
-	"'$out'/lib/python2.6/site-packages:"+
-	wxPython26+"/lib/python2.4/site-packages/wx-2.6-gtk2-unicode:"+
-	wxPython26+"/lib/python2.6/site-packages/wx-2.6-gtk2-unicode:"+
-	wxPython26+"/lib/python2.5/site-packages/wx-2.6-gtk2-unicode; "+
-	"python `which btdownloadgui.py` --ipv6_enabled 1 --ipv6_binds_v4 0 \"$@\";' >"+
-	"$out/bin/bittornado ; chmod a+rx $out/bin/bittornado;";
+  installPhase = ''
+    python setup.py install --prefix=$out ;
+    echo 'export PYTHONPATH=$PYTHONPATH:'$out'/lib/${python.libPrefix}/site-packages:${wxPython26}/lib/${python.libPrefix}/site-packages:${wxPython26}/lib/${python.libPrefix}/site-packages/wx-2.6-gtk2-unicode
+    python `which btdownloadgui.py` --ipv6_enabled 1 --ipv6_binds_v4 0 "$@";' > $out/bin/bittornado ; 
+    chmod a+rx $out/bin/bittornado;
+  '';
 
   meta = {
     description = "Bittorrent client with IPv6 support.";