diff --git a/pkgs/development/python-modules/pyside/apiextractor.nix b/pkgs/development/python-modules/pyside/apiextractor.nix
index 452320e1d71..07ddfb69fa0 100644
--- a/pkgs/development/python-modules/pyside/apiextractor.nix
+++ b/pkgs/development/python-modules/pyside/apiextractor.nix
@@ -1,8 +1,8 @@
-{ stdenv, fetchurl, cmake, libxml2, libxslt, python2, qt4 }:
+{ stdenv, fetchurl, cmake, libxml2, libxslt, python3, qt4 }:
 
 # This derivation does not provide any Python module and should therefore be called via `all-packages.nix`.
 let
-  pythonEnv = python2.withPackages(ps: with ps; [  sphinx ]);
+  pythonEnv = python3.withPackages(ps: with ps; [  sphinx ]);
 in stdenv.mkDerivation {
   name = "pyside-apiextractor-0.10.10";
 
@@ -13,7 +13,14 @@ in stdenv.mkDerivation {
 
   enableParallelBuilding = true;
 
-  buildInputs = [ cmake qt4 pythonEnv libxml2 libxslt ];
+  outputs = [ "out" "dev" ];
+
+  preConfigure = ''
+    cmakeFlagsArray=("-DCMAKE_INSTALL_PREFIX=$dev")
+  '';
+
+  nativeBuildInputs = [ cmake pythonEnv ];
+  buildInputs = [ qt4 libxml2 libxslt ];
 
   meta = {
     description = "Eases the development of bindings of Qt-based libraries for high level languages by automating most of the process";