Ansible 2.10.5 RHEL 8 with package module

When using the package module with the latest RC (as well as latest commit on master branch) of Mitogen for Ansible 2.10.5, I am receiving an exception;

fatal: [EL8]: FAILED! => {
    ansible_facts":
        "discovered_interpreter_python": "/usr/libexec/platform-python"
    "changed": false
    "module_stderr":
        Traceback (most recent call last):
          File "master:/Users/dsgnr/.virtualenvs/ansible/lib/python3.7/site-packages/ansible_mitogen/runner.py", line 975, in _run
            self._run_code(code, mod)
          File "master:/Users/dsgnr/.virtualenvs/ansible/lib/python3.7/site-packages/ansible_mitogen/runner.py", line 939, in _run_code
            exec(code, vars(mod))
          File "master:/Users/dsgnr/.virtualenvs/py3/lib/python3.7/site-packages/ansible/modules/dnf.py", line 1330, in <module>
          File "master:/Users/dsgnr/.virtualenvs/py3/lib/python3.7/site-packages/ansible/modules/dnf.py", line 1319, in main
          File "master:/Users/dsgnr/.virtualenvs/py3/lib/python3.7/site-packages/ansible/modules/dnf.py", line 1288, in run
          File "master:/Users/dsgnr/.virtualenvs/py3/lib/python3.7/site-packages/ansible/modules/dnf.py", line 620, in _base
          File "/usr/lib/python3.6/site-packages/dnf/base.py", line 300, in init_plugins
            self._plugins._load(self.conf, disabled_glob, enable_plugins)
          File "/usr/lib/python3.6/site-packages/dnf/plugin.py", line 131, in _load
            raise RuntimeError("load_plugins() called twice")
        RuntimeError: load_plugins() called twice
    "module_stdout": ""
    "msg":
        MODULE FAILURE
        See stdout/stderr for the exact error
    "rc": 1
}

+- name: Install package
+  package:
+    name: "{{ package }}"
+    state: present

However, using the individual modules works fine;

+- name: Install package for Ubuntu
+  apt:
+    name: "{{ package }}"
+    state: present
+  when: ansible_os_family == "Ubuntu"
+
+- name: Install package for RHEL up to version 7
+  yum:
+    name: "{{ package }}"
+    state: present
+  when: ansible_os_family == "RedHat" and ansible_distribution_major_version|int <= 7
+
+- name: Install package for RHEL 8
+  dnf:
+    name: "{{ package }}"
+    state: present
+  when: ansible_os_family == "RedHat" and ansible_distribution_major_version|int == 8

• Which version of Ansible are you running? Ansible 2.10.5

• Is your version of Ansible patched in any way?

• No

• Are you running with any custom modules, or module_utils loaded? No

• Have you tried the latest master version from Git? Running v0.3.0-rc.0

• Do you have some idea of what the underlying problem may be?

• Mention your host and target OS and versions Red Hat Enterprise Linux release 8.3 (Ootpa)

• Mention your host and target Python versions

# /usr/libexec/platform-python
Python 3.6.8 (default, Aug 18 2020, 08:33:21)
[GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

EDIT (AW): Formatted error and traceback

[annttu]

Adding ansible.legacy.dnf to ALWAYS_FORK_MODULES list in ansible_mitogen/planner.py seems to fix this issue with yum.

+++ ./ansible_mitogen/planner.py	2021-03-26 14:18:56.000000000 +0200
@@ -321,6 +321,7 @@
     ALWAYS_FORK_MODULES = frozenset([
         'dnf',  # issue #280; py-dnf/hawkey need therapy
         'firewalld',  # issue #570: ansible module_utils caches dbus conn
+        'ansible.legacy.dnf',  # issue #776
     ])

     def should_fork(self):

[bradh352]

If you want to easily install the PR #845 that contains this fix without manually patching, you can run something like: pip install git+https://github.com/mitogen-hq/mitogen.git@refs/pull/845/merge