Report files in original (filesystem) case

src/pip/_internal/req/req_uninstall.py

@@ -120,6 +120,8 @@ def compress_for_output_listing(paths):
             folders.add(os.path.dirname(path))
         files.add(path)
 
+    _normcased_files = set(map(os.path.normcase, files))
+
     folders = compact(folders)
 
     # This walks the tree using os.walk to not miss extra folders
@@ -130,8 +132,9 @@ def compress_for_output_listing(paths):
                 if fname.endswith(".pyc"):
                     continue
 
-                file_ = os.path.normcase(os.path.join(dirpath, fname))
-                if os.path.isfile(file_) and file_ not in files:
+                file_ = os.path.join(dirpath, fname)
+                if (os.path.isfile(file_) and
+                    os.path.normcase(file_) not in _normcased_files):
                     # We are skipping this file. Add it to the set.
                     will_skip.add(file_)
 

tests/unit/test_req_uninstall.py

@@ -50,9 +50,9 @@ def test_compressed_listing(tmpdir):
     def in_tmpdir(paths):
         li = []
         for path in paths:
-            li.append(str(os.path.normcase(
-                os.path.join(tmpdir, path.replace("/", os.path.sep))
-            )))
+            li.append(
+                str(os.path.join(tmpdir, path.replace("/", os.path.sep)))
+            )
         return li
 
     sample = in_tmpdir([