Bug#1010537: python3-msgpack-numpy: please upgrade or remove `encoding` arguments

[Étienne Mollier]

Package: python3-msgpack-numpy
Version: 0.4.4-1.1
Severity: important
Tags: patch
Control: block 829424 by -1
Control: affects -1 + psychopy

Hello,

When investigating #829424 with upstream developper of
psychopy[1], I was first under the impression that
msgpack_numpy.py still seems to primarily target python2.  This
is causing failure to execute the iohub server in psychopy with
the following symptoms, in python3 console:

	>>> import psychopy.iohub as iohub
	>>> io = iohub.launchHubServer()
	Traceback (most recent call last):
	  File "<stdin>", line 1, in <module>
	  File "/usr/lib/python3/dist-packages/psychopy/contrib/lazy_import.py", line 118, in __call__
	    return obj(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/psychopy/iohub/client/connect.py", line 256, in launchHubServer
	    return ioHubConnection(iohub_config)
	  File "/usr/lib/python3/dist-packages/psychopy/iohub/client/__init__.py", line 294, in __init__
	    self.iohub_status = self._startServer(ioHubConfig, ioHubConfigAbsPath)
	  File "/usr/lib/python3/dist-packages/psychopy/iohub/client/__init__.py", line 984, in _startServer
	    self.udp_client = UDPClientConnection(remote_port=server_udp_port, timeout=0.1)
	  File "/usr/lib/python3/dist-packages/psychopy/iohub/net.py", line 116, in __init__
	    SocketConnection.__init__(self, remote_host=remote_host,
	  File "/usr/lib/python3/dist-packages/psychopy/iohub/net.py", line 48, in __init__
	    self.packer = msgpack.Packer()
	  File "/usr/lib/python3/dist-packages/msgpack_numpy.py", line 127, in __init__
	    super(Packer, self).__init__(default=default,
	  File "msgpack/_packer.pyx", line 124, in msgpack._cmsgpack.Packer.__init__
	TypeError: __init__() got an unexpected keyword argument 'encoding'

The patch in attachment works around this issue by converting
the script to python3 and removing the calls to encoding
arguments which don't seem available anymore.

[1]: https://github.com/psychopy/psychopy/issues/4440

That being said, I noted a few minutes later that the watch file
was failing to work, and that the python-msypack-numpy package
is actually out-of-date, so I believe solving the issue might
simply be a matter of upgrading the package.

Have a nice day,  :)
Étienne.

-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.16.0-6-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-msgpack-numpy depends on:
ii  python3          3.10.4-1+b1
ii  python3-msgpack  1.0.3-1
ii  python3-numpy    1:1.21.5-1

python3-msgpack-numpy recommends no packages.

python3-msgpack-numpy suggests no packages.

-- no debconf information

-- 
Étienne Mollier <emollier at emlwks999.eu>
Fingerprint:  8f91 b227 c7d6 f2b1 948c  8236 793c f67e 8f0d 11da
Sent from /dev/pts/8, please excuse my verbosity.
On air: Kansas - Journey From Mariabrown
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