diff -r 0610f70e6694 Makefile.pre.in
--- a/Makefile.pre.in	Sun Jun 26 23:48:23 2011 -0700
+++ b/Makefile.pre.in	Mon Jun 27 05:40:27 2011 -0700
@@ -758,7 +758,8 @@
 
 TESTOPTS=	-l $(EXTRATESTOPTS)
 TESTPROG=	$(srcdir)/Lib/test/regrtest.py
-TESTPYTHON=	$(RUNSHARED) ./$(BUILDPYTHON) -Wd -E -bb $(TESTPYTHONOPTS)
+TESTPYTHON=	env -i $(RUNSHARED) ./$(BUILDPYTHON) -Wd -bb $(TESTPYTHONOPTS)
 test:		all platform
 		-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
 		-$(TESTPYTHON) $(TESTPROG) $(TESTOPTS)