From cf65b19904ab5284b1bc49c050c36e48fe81fd7f Mon Sep 17 00:00:00 2001
From: q0w <43147888+q0w@users.noreply.github.com>
Date: Thu, 2 Jun 2022 20:45:50 +0300
Subject: [PATCH] Check dependencies

---
 src/pip/_internal/commands/check.py   | 16 ++++++++++++----
 src/pip/_internal/operations/check.py |  3 +++
 tests/functional/test_check.py        |  2 +-
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/pip/_internal/commands/check.py b/src/pip/_internal/commands/check.py
index 93746abd7e4..133e50b6944 100644
--- a/src/pip/_internal/commands/check.py
+++ b/src/pip/_internal/commands/check.py
@@ -1,5 +1,5 @@
 import logging
-from optparse import Values
+from optparse import Option, OptionParser, Values
 from typing import Callable, List, Optional
 
 from pip._internal.cli.base_command import Command
@@ -13,6 +13,13 @@
 logger = logging.getLogger(__name__)
 
 
+def _handle_ignore_packages(
+    option: Option, opt_str: str, value: str, parser: OptionParser
+) -> None:
+    assert option.dest is not None
+    setattr(parser.values, option.dest, set(value.split(",")))
+
+
 class CheckCommand(Command):
     """Verify installed packages have compatible dependencies."""
 
@@ -22,10 +29,11 @@ class CheckCommand(Command):
     def add_options(self) -> None:
         self.cmd_opts.add_option(
             "--ignore-packages",
-            action="append",
-            metavar="PACKAGE",
+            action="callback",
+            callback=_handle_ignore_packages,
+            metavar="package",
+            type="str",
             dest="ignore_packages",
-            default=[],
             help="Ignore packages.",
         )
         self.parser.insert_option_group(0, self.cmd_opts)
diff --git a/src/pip/_internal/operations/check.py b/src/pip/_internal/operations/check.py
index fb3ac8b9c9e..f75e1c8ee93 100644
--- a/src/pip/_internal/operations/check.py
+++ b/src/pip/_internal/operations/check.py
@@ -71,6 +71,9 @@ def check_package_set(
         for req in package_detail.dependencies:
             name = canonicalize_name(req.name)
 
+            if should_ignore and should_ignore(name):
+                continue
+
             # Check if it's missing
             if name not in package_set:
                 missed = True
diff --git a/tests/functional/test_check.py b/tests/functional/test_check.py
index 13fea7b8c17..3deca0f62c4 100644
--- a/tests/functional/test_check.py
+++ b/tests/functional/test_check.py
@@ -323,7 +323,7 @@ def test_check_ignore_packages(script: PipTestEnvironment) -> None:
     result = script.pip("install", "--no-index", package_a_path, "--no-deps")
     assert "Successfully installed package-A-1.0" in result.stdout, str(result)
 
-    result = script.pip("check", "--ignore-packages=package-a")
+    result = script.pip("check", "--ignore-packages=missing")
     expected_lines = ("No broken requirements found.",)
     assert matches_expected_lines(result.stdout, expected_lines)
     assert result.returncode == 0