Gets stuck connecting via ssh

[roman-r-m]

Describe the bug

I'm having trouble getting an example from the docs work.
The command I'm running is as follows:

venv/bin/python -m pyinfra -vvv --debug inventory.py exec -- echo "hello world"
--> Loading config...
--> Loading inventory...
    [pyinfra_cli.inventory] Creating fake inventory...
    [pyinfra_cli.inventory] Checking possible group_data at: ...

--> Connecting to hosts...
    [pyinfra.connectors.ssh] Connecting to: 192.168.1.218 ({'allow_agent': False, 'look_for_keys': False, '_pyinfra_ssh_forward_agent': False, '_pyinfra_ssh_config_file': None, '_pyinfra_ssh_known_hosts_file': '...', '_pyinfra_ssh_strict_host_key_checking': 'accept-new', '_pyinfra_ssh_paramiko_connect_kwargs': None, 'username': '...', 'port': 22, 'timeout': 10, 'pkey': ...})
    [pyinfra.connectors.sshuserclient.client] Loading SSH config: None

And it gets stuck here, until I press Ctrl+C.
Then it suddenly connects (and indeed I see it in journalctl on the server):

^CExiting upon user request!
    [192.168.1.218] Connected

Then again nothing happens, until I Ctrl+C again and it terminates.

Firstly, not sure why it says Loading SSH config: None when I gave it path to the config, but more importanly why does it get stuck?
Any way to debug this further?

My inventory is

servers = [
    ('192.168.1.218',{
        'ssh_port': 22,
        'ssh_user': '...',
        'ssh_key': '...',
        'ssh_key_password': '',
        'ssh_known_hosts_file': '...'
    }),	
]

Meta

    System: Linux
      Platform: Linux-6.6.54-2-MANJARO-x86_64-with-glibc2.40
      Release: 6.6.54-2-MANJARO
      Machine: x86_64
    pyinfra: v3.1.1
      click: v8.1.7
      configparser: v7.1.0
      distro: v1.9.0
      gevent: v24.10.3
      jinja2: v3.1.4
      packaging: v24.1
      paramiko: v3.5.0
      python-dateutil: v2.9.0.post0
      pywinrm: v0.5.0
      setuptools: v75.2.0
      typeguard: v4.3.0
      typing-extensions: v4.12.2
    Executable: /home/roman/dev/homelab/venv/lib/python3.12/site-packages/pyinfra/__main__.py
    Python: 3.12.6 (CPython, GCC 14.2.1 20240805)

Debug log

  File "/home/roman/dev/homelab/venv/lib/python3.12/site-packages/pyinfra_cli/main.py", line 222, in cli
    _main(*args, **kwargs)
  File "/home/roman/dev/homelab/venv/lib/python3.12/site-packages/pyinfra_cli/main.py", line 348, in _main
    connect_all(state)
  File "/home/roman/dev/homelab/venv/lib/python3.12/site-packages/pyinfra/api/connect.py", line 27, in connect_all
    with progress_spinner(greenlet_to_host.values()) as progress:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/contextlib.py", line 144, in __exit__
    next(self.gen)
  File "/home/roman/dev/homelab/venv/lib/python3.12/site-packages/pyinfra/progress.py", line 146, in progress_spinner
    spinner_thread.join()
  File "/usr/lib/python3.12/threading.py", line 1149, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.12/threading.py", line 1169, in _wait_for_tstate_lock
    if lock.acquire(block, timeout):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/roman/dev/homelab/venv/lib/python3.12/site-packages/gevent/thread.py", line 276, in acquire
    acquired = BoundedSemaphore.acquire(self, blocking, timeout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "src/gevent/_semaphore.py", line 184, in gevent._gevent_c_semaphore.Semaphore.acquire
  File "src/gevent/_semaphore.py", line 263, in gevent._gevent_c_semaphore.Semaphore.acquire
  File "src/gevent/_semaphore.py", line 253, in gevent._gevent_c_semaphore.Semaphore.acquire
  File "src/gevent/_abstract_linkable.py", line 521, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait
  File "src/gevent/_abstract_linkable.py", line 487, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait_core
  File "src/gevent/_abstract_linkable.py", line 490, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait_core
  File "src/gevent/_abstract_linkable.py", line 442, in gevent._gevent_c_abstract_linkable.AbstractLinkable._AbstractLinkable__wait_to_be_notified
  File "src/gevent/_abstract_linkable.py", line 451, in gevent._gevent_c_abstract_linkable.AbstractLinkable._switch_to_hub
  File "src/gevent/_greenlet_primitives.py", line 61, in gevent._gevent_c_greenlet_primitives.SwitchOutGreenletWithLoop.switch
  File "src/gevent/_greenlet_primitives.py", line 65, in gevent._gevent_c_greenlet_primitives.SwitchOutGreenletWithLoop.switch
  File "src/gevent/_gevent_c_greenlet_primitives.pxd", line 35, in gevent._gevent_c_greenlet_primitives._greenlet_switch
gevent.exceptions.LoopExit: This operation would block forever
        Hub: <Hub '' at 0x7f69e6171580 epoll default pending=0 ref=0 fileno=3 resolver=<gevent.resolver.thread.Resolver at 0x7f69e80567b0 pool=<ThreadPool at 0x7f69e5f509e0 tasks=0 size=0 maxsize=10 hub=<Hub at 0x7f69e6171580 thread_ident=0x7f69e9850b80>>> threadpool=<ThreadPool at 0x7f69e5f509e0 tasks=0 size=0 maxsize=10 hub=<Hub at 0x7f69e6171580 thread_ident=0x7f69e9850b80>> thread_ident=0x7f69e9850b80>
        Handles:
[]

[roman-r-m]

Looks like it's paramico that is the culprit here. Will check its repo.