freeze: deprecate option --find-links

Author: xavfernandez

news/9069.removal.rst

@@ -0,0 +1 @@
+Deprecate ``--find-links`` option in ``pip freeze``

src/pip/_internal/commands/freeze.py

@@ -9,6 +9,7 @@
 from pip._internal.models.format_control import FormatControl
 from pip._internal.operations.freeze import freeze
 from pip._internal.utils.compat import stdlib_pkgs
+from pip._internal.utils.deprecation import deprecated
 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
 
 DEV_PKGS = {'pip', 'setuptools', 'distribute', 'wheel'}
@@ -86,6 +87,14 @@ def run(self, options, args):
 
         cmdoptions.check_list_path_option(options)
 
+        if options.find_links:
+            deprecated(
+                "--find-links option in pip freeze is deprecated.",
+                replacement=None,
+                gone_in="21.2",
+                issue=9069,
+            )
+
         freeze_kwargs = dict(
             requirement=options.requirements,
             find_links=options.find_links,

tests/functional/test_freeze.py

@@ -358,7 +358,8 @@ def test_freeze_mercurial_clone_srcdir(script, tmpdir):
     _check_output(result.stdout, expected)
 
     result = script.pip(
-        'freeze', '-f', '{repo_dir}#egg=pip_test_package'.format(**locals())
+        'freeze', '-f', '{repo_dir}#egg=pip_test_package'.format(**locals()),
+        expect_stderr=True,
     )
     expected = textwrap.dedent(
         """