import portage
import sys
import string

# Code from zmedico in
# https://bugs.gentoo.org/show_bug.cgi?id=157357
# Ask him when it breaks

argv = sys.argv[1:]
myroot = argv[0]
pn = argv[1]
try:
	slot = argv[2]
	myatom = pn + ":" + slot
except IndexError:
	myatom = pn

trees = portage.db
vardb = trees[myroot]["vartree"].dbapi
mysettings = vardb.settings

try:
	myatom = portage.key_expand(
		myatom, mydb=vardb, settings=mysettings)
	myslots = []
	vdb_matches = vardb.match(myatom)
	
	for cpv in vdb_matches:
		myslots.append(vardb.aux_get(cpv, ["SLOT"])[0])
	
	if len(myslots) < 2:
		greedy_atoms = [myatom]
	else:
		greedy_atoms = []
		mykey = portage.dep_getkey(myatom)
		for myslot in myslots:
			greedy_atoms.append("%s:%s" % (mykey, myslot))
	
	for myatom in greedy_atoms:
		mycheck = portage.dep_check(
			myatom, None, mysettings, myroot=myroot, trees=trees)
		if not mycheck[0]:
			sys.stderr.write("\n\n%s\n\n" % mycheck[1])
			sys.stderr.write("%s\n\n" % depstring)
			sys.exit(1)
		for myatom in mycheck[1]:
			for cpv in vardb.match(myatom):
				if cpv.find(pn) == -1:
					print cpv

except ValueError, e:
	portage.writemsg("ValueError:\n", noiselevel=-1)