move fix from relation() to _register()

Author: radoering

src/poetry/mixology/partial_solution.py

@@ -146,6 +146,15 @@ def _register(self, assignment: Assignment) -> None:
         """
         name = assignment.dependency.complete_name
         old_positive = self._positive.get(name)
+        if old_positive is None and assignment.dependency.features:
+            old_positive_without_features = self._positive.get(
+                assignment.dependency.name
+            )
+            if old_positive_without_features is not None:
+                dep = old_positive_without_features.dependency.with_features(
+                    assignment.dependency.features
+                )
+                old_positive = Term(dep, is_positive=True)
         if old_positive is not None:
             value = old_positive.intersect(assignment)
             assert value is not None
@@ -213,13 +222,6 @@ def relation(self, term: Term) -> str:
         if positive is not None:
             return positive.relation(term)
 
-        positive = self._positive.get(term.dependency.name)
-        if positive is not None:
-            dep = positive.dependency.with_features(term.dependency.features)
-            positive_with_features = Term(dep, is_positive=True)
-            self._positive[term.dependency.complete_name] = positive_with_features
-            return positive_with_features.relation(term)
-
         by_ref = self._negative.get(term.dependency.complete_name)
         if by_ref is None:
             return SetRelation.OVERLAPPING