depgraph: Optimize --newuse with Package attrs.

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index 76c1cb4ee4c41debfc611968ffb7bdc168106240..6d04e781186b22f447bce2e987f814ddd045acc8 100644 (file)
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -55,7 +55,7 @@ from _emerge.UnmergeDepPriority import UnmergeDepPriority
 from _emerge.resolver.backtracking import Backtracker, BacktrackParameter
 from _emerge.resolver.slot_collision import slot_conflict_handler
 from _emerge.resolver.circular_dependency import circular_dependency_handler
-from _emerge.resolver.output import Display, filter_iuse_defaults
+from _emerge.resolver.output import Display
 
 if sys.hexversion >= 0x3000000:
        basestring = str
@@ -3108,9 +3108,9 @@ class depgraph(object):
                                                forced_flags = set()
                                                forced_flags.update(pkg.use.force)
                                                forced_flags.update(pkg.use.mask)
-                                               old_use = vardb.aux_get(cpv, ["USE"])[0].split()
-                                               old_iuse = set(filter_iuse_defaults(
-                                                       vardb.aux_get(cpv, ["IUSE"])[0].split()))
+                                               inst_pkg = vardb.match_pkgs('=' + pkg.cpv)[0]
+                                               old_use = inst_pkg.use.enabled
+                                               old_iuse = inst_pkg.iuse.all
                                                cur_use = self._pkg_use_enabled(pkg)
                                                cur_iuse = pkg.iuse.all
                                                reinstall_for_flags = \