Initial commit.

lib/python3.7/site-packages/pip/_internal/distributions/wheel.py

@@ -0,0 +1,20 @@
+# The following comment should be removed at some point in the future.
+# mypy: disallow-untyped-defs=False
+
+from pip._vendor import pkg_resources
+
+from pip._internal.distributions.base import AbstractDistribution
+
+
+class WheelDistribution(AbstractDistribution):
+    """Represents a wheel distribution.
+
+    This does not need any preparation as wheels can be directly unpacked.
+    """
+
+    def get_pkg_resources_distribution(self):
+        return list(pkg_resources.find_distributions(
+                    self.req.source_dir))[0]
+
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        pass