--- sudoers.orig	2007-07-08 09:06:33.000000000 -0400
+++ sudoers	2007-08-27 15:37:00.868840000 -0400
@@ -12,6 +12,14 @@
 # Cmnd alias specification
 
 # Defaults specification
+# Uncomment if needed to preserve environmental variables related to the
+# FreeBSD pkg_* utilities.
+#Defaults	env_keep += "PKG_PATH PKG_DBDIR PKG_TMPDIR TMPDIR PACKAGEROOT PACKAGESITE PKGDIR"
+
+# Uncomment if needed to preserve environmental variables related to
+# portupgrade. (portupgrade uses some of the same variables as the pkg_*
+# tools so their Defaults above should be uncommented if needed too.)
+#Defaults	env_keep += "PORTSDIR PORTS_INDEX PORTS_DBDIR PACKAGES PKGTOOLS_CONF"
 
 # Runas alias specification