[stable-2.7] pip: Fix the mistake replacement from 'distribute' to 'setuptools' (#47403) (#49132)

* [stable-2.7] pip: Fix the mistake replacement from 'distribute' to 'setuptools' (#47403)

* Fix the mistake replace from distribute to setuptools

* Add a testcase for this bug
(cherry picked from commit 93c5781)

Co-authored-by: Zhikang Zhang <zzhang63@ncsu.edu>

* Add a change note

changelogs/fragments/47198-fix-setuptools-distutils.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "pip module - fix setuptools/distutils replacement (https://github.com/ansible/ansible/issues/47198)"

lib/ansible/modules/packaging/language/pip.py

@@ -503,8 +503,8 @@ class Package:
             name_string = separator.join((name_string, version_string))
         try:
             self._requirement = Requirement.parse(name_string)
-            # old pkg_resource will replace 'setuptools' with 'distribute' when it already installed
-            if self._requirement.project_name == "distribute":
+            # old pkg_resource will replace 'setuptools' with 'distribute' when it's already installed
+            if self._requirement.project_name == "distribute" and "setuptools" in name_string:
                 self.package_name = "setuptools"
                 self._requirement.project_name = "setuptools"
             else:

test/integration/targets/pip/tasks/pip.yml

@@ -499,3 +499,15 @@
   pip:
     name: "{{ pip_test_packages }}"
     state: absent
+
+# https://github.com/ansible/ansible/issues/47198
+- name: try to remove distribute
+  pip:
+    state: "absent"
+    name: "distribute"
+  ignore_errors: yes
+  register: remove_distribute
+
+- name: inspect the cmd
+  assert:
+    that: "'distribute' in remove_distribute.cmd"