Use StopIteration to exit nested loops.
diff --git a/pym/portage/dep/__init__.py b/pym/portage/dep/__init__.py
index c5f6a0b..382a4f6 100644
--- a/pym/portage/dep/__init__.py
+++ b/pym/portage/dep/__init__.py
@@ -1087,11 +1087,15 @@
% (eapi, self), category='EAPI.incompatible')
if is_valid_flag is not None and self.use.conditional:
invalid_flag = None
- for conditional_type, flags in self.use.conditional.items():
- for flag in flags:
- if not is_valid_flag(flag):
- invalid_flag = (conditional_type, flag)
- break
+ try:
+ for conditional_type, flags in \
+ self.use.conditional.items():
+ for flag in flags:
+ if not is_valid_flag(flag):
+ invalid_flag = (conditional_type, flag)
+ raise StopIteration()
+ except StopIteration:
+ pass
if invalid_flag is not None:
conditional_type, flag = invalid_flag
conditional_str = _use_dep._conditional_strings[conditional_type]
