Use is_valid_flag.

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index 8349bb55eb6a9213a1f38ba02be301454e71f12a..c3e180faf75520f2fb4214bc96a3ad310151547c 100644 (file)
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -2538,8 +2538,7 @@ class depgraph(object):
                                        if atom.use:
                                                missing_iuse = False
                                                for x in atom.use.required:
-                                                       if x not in pkg.iuse.all and \
-                                                               pkg.root_config.settings._iuse_implicit_re.match(x) is None:
+                                                       if not pkg.iuse.is_valid_flag(x):
                                                                missing_iuse = True
                                                                break
                                                if missing_iuse: