Use named arguments for clarity

src/pip/_internal/resolution/resolvelib/resolver.py

@@ -43,9 +43,9 @@ class Resolver(BaseResolver):
     def resolve(self, root_reqs, check_supported_wheels):
         # type: (List[InstallRequirement], bool) -> RequirementSet
         provider = PipProvider(
-            self.finder,
-            self.preparer,
-            self.make_install_req,
+            finder=self.finder,
+            preparer=self.preparer,
+            make_install_req=self.make_install_req,
         )
         reporter = BaseReporter()
         resolver = RLResolver(provider, reporter)

tests/unit/resolution_resolvelib/conftest.py

@@ -55,4 +55,8 @@ def provider(finder, preparer):
         wheel_cache=None,
         use_pep517=None,
     )
-    yield PipProvider(finder, preparer, make_install_req)
+    yield PipProvider(
+        finder=finder,
+        preparer=preparer,
+        make_install_req=make_install_req,
+    )