Print a message and don't reinstall wheels

Also, adds a test for source distributions being reinstalled.

Signed-off-by: Pradyun Gedam <pradyunsg@users.noreply.github.com>

1 files changed, 13 insertions, 5 deletions

diff --git a/src/pip/_internal/resolution/resolvelib/resolver.py b/src/pip/_internal/resolution/resolvelib/resolver.py
index 6290d2fe3..f29b9692b 100644
--- a/src/pip/_internal/resolution/resolvelib/resolver.py
+++ b/src/pip/_internal/resolution/resolvelib/resolver.py
@@ -134,23 +134,31 @@ class Resolver(BaseResolver):
             # and set a flag for later stages to uninstall it, if needed.
             #
             # * There is no existing installation. Nothing to uninstall.
-            # * The candidate is a local path/file. Always reinstall.
             # * The --force-reinstall flag is set. Always reinstall.
             # * The installation is different in version or editable-ness, so
             #   we need to uninstall it to install the new distribution.
-            # * The installed version is the same as the pending distribution.
-            #   Skip this distribution altogether to save work.
+            # * The installed version is different from the pending distribution.
+            # * The candidate is a local wheel. Do nothing.
+            # * The candidate is a local path. Always reinstall.
             installed_dist = self.factory.get_dist_to_uninstall(candidate)
             if installed_dist is None:
                 ireq.should_reinstall = False
-            elif candidate.source_link.is_file:
-                ireq.should_reinstall = True
             elif self.factory.force_reinstall:
                 ireq.should_reinstall = True
             elif installed_dist.parsed_version != candidate.version:
                 ireq.should_reinstall = True
             elif dist_is_editable(installed_dist) != candidate.is_editable:
                 ireq.should_reinstall = True
+            elif candidate.source_link.is_file:
+                if candidate.source_link.is_wheel:
+                    logger.info(
+                        "%s is already installed with the same version as the "
+                        "provided wheel. Use --force-reinstall to force an "
+                        "installation of the wheel.",
+                        ireq.name,
+                    )
+                    continue
+                ireq.should_reinstall = True
             else:
                 continue