Bug 1907464

python-jupyter-console fails to build with Python 3.10.0a3.

======================================================================
ERROR: test that `jupyter console` starts a terminal
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/lib/python3.10/site-packages/ipython_genutils/testing/decorators.py", line 186, in skipper_func
    return f(*args, **kwargs)
  File "/builddir/build/BUILD/jupyter_console-6.2.0/jupyter_console/tests/test_console.py", line 20, in test_console_starts
    p, pexpect, t = start_console()
  File "/builddir/build/BUILD/jupyter_console-6.2.0/jupyter_console/tests/test_console.py", line 71, in start_console
    idx = p.expect(r'In \[\d+\]', timeout=t)
  File "/usr/lib/python3.10/site-packages/pexpect/spawnbase.py", line 343, in expect
    return self.expect_list(compiled_pattern_list,
  File "/usr/lib/python3.10/site-packages/pexpect/spawnbase.py", line 372, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/lib/python3.10/site-packages/pexpect/expect.py", line 179, in expect_loop
    return self.eof(e)
  File "/usr/lib/python3.10/site-packages/pexpect/expect.py", line 122, in eof
    raise exc
pexpect.exceptions.EOF: End Of File (EOF). Braindead platform.
<pexpect.pty_spawn.spawn object at 0x7f1d7c2777f0>
command: /usr/bin/python3
args: ['/usr/bin/python3', '-m', 'jupyter_console', '--colors=NoColor']
buffer (last 100 chars): b''
before (last 100 chars): b"interact' was never awaited\r\n[IPKernelApp] WARNING | Parent appears to have exited, shutting down.\r\n"
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: 1
flag_eof: True
pid: 11758
child_fd: 6
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'In \\[\\d+\\]')

======================================================================
ERROR: Ensure display protocol plain/text key is supported
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/builddir/build/BUILD/jupyter_console-6.2.0/jupyter_console/tests/test_console.py", line 36, in test_display_text
    p, pexpect, t = start_console()
  File "/builddir/build/BUILD/jupyter_console-6.2.0/jupyter_console/tests/test_console.py", line 71, in start_console
    idx = p.expect(r'In \[\d+\]', timeout=t)
  File "/usr/lib/python3.10/site-packages/pexpect/spawnbase.py", line 343, in expect
    return self.expect_list(compiled_pattern_list,
  File "/usr/lib/python3.10/site-packages/pexpect/spawnbase.py", line 372, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/lib/python3.10/site-packages/pexpect/expect.py", line 179, in expect_loop
    return self.eof(e)
  File "/usr/lib/python3.10/site-packages/pexpect/expect.py", line 122, in eof
    raise exc
pexpect.exceptions.EOF: End Of File (EOF). Braindead platform.
<pexpect.pty_spawn.spawn object at 0x7f1d7bc66340>
command: /usr/bin/python3
args: ['/usr/bin/python3', '-m', 'jupyter_console', '--colors=NoColor']
buffer (last 100 chars): b''
before (last 100 chars): b"interact' was never awaited\r\n[IPKernelApp] WARNING | Parent appears to have exited, shutting down.\r\n"
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: 1
flag_eof: True
pid: 11780
child_fd: 7
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'In \\[\\d+\\]')

----------------------------------------------------------------------
Ran 9 tests in 9.269s

FAILED (SKIP=1, errors=2)

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01827030-python-jupyter-console/

For all our attempts to build python-jupyter-console with Python 3.10, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/package/python-jupyter-console/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.10:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/

Let us know here if you have any questions.

Python 3.10 will be included in Fedora 35. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.10.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.