python wrapper that sets PYTHONHOME to the profile it is in

svn path=/nixpkgs/trunk/; revision=29462

pkgs/development/interpreters/python/pythonhome-wrapper.nix

@@ -0,0 +1,21 @@
+{ stdenv }:
+
+stdenv.mkDerivation {
+  name = "pythonhome-wrapper";
+
+  unpackPhase = "true";
+  installPhase = ''
+    ensureDir $out/bin
+    echo '
+#!/bin/sh
+
+BINDIR=`dirname $0`
+PYTHONHOME=`dirname $BINDIR`
+PYTHONHOME=`(cd $PYTHONHOME && pwd)`
+export PYTHONHOME
+
+$BINDIR/python "$@"
+    ' > $out/bin/py
+    chmod +x $out/bin/py
+  '';
+}