Index: pym/portage.py
===================================================================
--- pym/portage.py	(revision 1992)
+++ pym/portage.py	(working copy)
@@ -483,13 +483,15 @@
 	  "KDEDIRS":[],"PATH":[],"CLASSPATH":[],"LDPATH":[],"MANPATH":[],
 		"INFODIR":[],"INFOPATH":[],"ROOTPATH":[],"CONFIG_PROTECT":[],
 		"CONFIG_PROTECT_MASK":[],"PRELINK_PATH":[],"PRELINK_PATH_MASK":[],
-		"PYTHONPATH":[], "ADA_INCLUDE_PATH":[], "ADA_OBJECTS_PATH":[]
+		"PYTHONPATH":[], "ADA_INCLUDE_PATH":[], "ADA_OBJECTS_PATH":[],
+		"PKG_CONFIG_PATH":[]
 	}
 	colon_separated = [
 		"ADA_INCLUDE_PATH",  "ADA_OBJECTS_PATH",
 		"LDPATH",            "MANPATH",
 		"PATH",              "PRELINK_PATH",
-		"PRELINK_PATH_MASK", "PYTHONPATH"
+		"PRELINK_PATH_MASK", "PYTHONPATH",
+		"PKG_CONFIG_PATH"
 	]
 
 	env={}
Index: bin/emerge
===================================================================
--- bin/emerge	(revision 1992)
+++ bin/emerge	(working copy)
@@ -2687,6 +2687,7 @@
 		porttree_root = portage.portdb.porttree_root
 		pdb = portage.portdbapi(porttree_root, portage.config(config_profile_path=portage.settings.profile_path[:], \
 			config_incrementals=portage.settings.incrementals[:]))
+		pdb.porttrees = [porttree_root]
 		cp_list = pdb.cp_all()
 		if len(cp_list) == 0:
 			print "no metadata to transfer, exiting"