Bug#978654: python3-cypari2: Depends on cysignals

[Celelibi]

Package: python3-cypari2
Version: 2.1.2-1+b1
Severity: important

Dear Maintainer,

The module cypari2 seems to be impossible to import without the module
cysignals.

Here's the traceback:

>>> import cypari2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/cypari2/__init__.py", line 1, in <module>
    from .pari_instance import Pari
  File "cypari2/pari_instance.pyx", line 1, in init cypari2.pari_instance
  File "cypari2/gen.pyx", line 1, in init cypari2.gen
  File "cypari2/stack.pyx", line 1, in init cypari2.stack
ModuleNotFoundError: No module named 'cysignals'


Installing python3-cysignals-bare or python3-cysignals-pari fixes it.
Therefore, I would suggest adding a dependency to
'python3-cysignal-bare | python3-cysignals-pari'.

Best regards,
Celelibi


-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.8.0-3-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages python3-cypari2 depends on:
ii  libc6             2.31-6
ii  libpari-gmp-tls7  2.13.0-2
ii  python3           3.9.0-4

python3-cypari2 recommends no packages.

python3-cypari2 suggests no packages.

-- no debconf information