action_deselect: expand cat against world atoms

1 files changed, 24 insertions, 12 deletions

diff --git a/pym/_emerge/actions.py b/pym/_emerge/actions.py
index ea8fc42fc..b683a37e8 100644
--- a/pym/_emerge/actions.py
+++ b/pym/_emerge/actions.py
@@ -1218,25 +1218,37 @@ def action_deselect(settings, trees, opts, atoms):
 			level=logging.ERROR, noiselevel=-1)
 		return 1
 
-	vardb = root_config.trees['vartree'].dbapi
-	expanded_atoms = set(atoms)
-	from portage.dep import Atom
-	for atom in atoms:
-		if not atom.startswith(SETPREFIX):
-			for cpv in vardb.match(atom):
-				slot, = vardb.aux_get(cpv, ['SLOT'])
-				if not slot:
-					slot = '0'
-				expanded_atoms.add(Atom('%s:%s' % (portage.cpv_getkey(cpv), slot)))
-
 	pretend = '--pretend' in opts
 	locked = False
 	if not pretend and hasattr(world_set, 'lock'):
 		world_set.lock()
 		locked = True
 	try:
-		discard_atoms = set()
 		world_set.load()
+		world_atoms = world_set.getAtoms()
+		vardb = root_config.trees["vartree"].dbapi
+		expanded_atoms = set(atoms)
+
+		for atom in atoms:
+			if not atom.startswith(SETPREFIX):
+				if atom.cp.startswith("null/"):
+					# try to expand category from world set
+					null_cat, pn = portage.catsplit(atom.cp)
+					for world_atom in world_atoms:
+						cat, world_pn = portage.catsplit(world_atom.cp)
+						if pn == world_pn:
+							expanded_atoms.add(
+								Atom(atom.replace("null", cat, 1),
+								allow_repo=True, allow_wildcard=True))
+
+				for cpv in vardb.match(atom):
+					slot, = vardb.aux_get(cpv, ["SLOT"])
+					if not slot:
+						slot = "0"
+					expanded_atoms.add(Atom("%s:%s" % \
+						(portage.cpv_getkey(cpv), slot)))
+
+		discard_atoms = set()
 		for atom in world_set:
 			for arg_atom in expanded_atoms:
 				if arg_atom.startswith(SETPREFIX):