Make mypy happy

pradyunsg · pradyunsg · commit a0e4eb6c2dd3 · 2020-05-21T21:21:56.000+05:30
diff --git a/src/pip/_internal/resolution/resolvelib/factory.py b/src/pip/_internal/resolution/resolvelib/factory.py
@@ -187,6 +187,7 @@ def make_requirement_from_install_req(self, ireq):
         return SpecifierRequirement(ireq, factory=self)
 
     def make_requirement_from_candidate(self, candidate):
+        # type: (Candidate) -> ExplicitRequirement
         return ExplicitRequirement(candidate)
 
     def make_requirement_from_spec(self, specifier, comes_from):
