Arch Linux

Description:
When calling the find_grp_pkgs method, the python program crashes with a segmentation fault.
This method used to work a few months ago but I don't know the exact version of pyalpm on which it did work.

Package versions:
pyalpm 0.10.4-1
python 3.9.5-3
pacman 6.0.0-3

Steps to reproduce:
import pyalpm

print('Creating handle...')
handle = pyalpm.Handle('.', '/var/lib/pacman/')

print('Registering syncdbs...')
for name in ['core', 'extra', 'community']:
print(f'\t{name}...')
handle.register_syncdb(name, pyalpm.SIG_DATABASE_OPTIONAL)

print('Getting syncdbs...')
syncdbs = handle.get_syncdbs()

print('Finding group packages...')
pkgs = pyalpm.find_grp_pkgs(syncdbs, 'gnome') # Segfaults!

print('Should not be printed!')
print(pkgs)

Backtrace:
#0 0x00007ffff732a678 in pyalpm_package_from_pmpkg () from /usr/lib/python3.9/site-packages/pyalpm.cpython-39-x86_64-linux-gnu.so
#1 0x00007ffff732be7f in alpmlist_to_pylist () from /usr/lib/python3.9/site-packages/pyalpm.cpython-39-x86_64-linux-gnu.so
#2 0x00007ffff7328a27 in pyalpm_find_grp_pkgs () from /usr/lib/python3.9/site-packages/pyalpm.cpython-39-x86_64-linux-gnu.so
#3 0x00007ffff7d2d128 in ?? () from /usr/lib/libpython3.9.so.1.0
#4 0x00007ffff7d15513 in _PyObject_MakeTpCall () from /usr/lib/libpython3.9.so.1.0
#5 0x00007ffff7d1144d in _PyEval_EvalFrameDefault () from /usr/lib/libpython3.9.so.1.0
#6 0x00007ffff7d0b219 in ?? () from /usr/lib/libpython3.9.so.1.0
#7 0x00007ffff7d0ac01 in _PyEval_EvalCodeWithName () from /usr/lib/libpython3.9.so.1.0
#8 0x00007ffff7dc1d63 in PyEval_EvalCode () from /usr/lib/libpython3.9.so.1.0
#9 0x00007ffff7dd1b94 in ?? () from /usr/lib/libpython3.9.so.1.0
#10 0x00007ffff7dcd83b in ?? () from /usr/lib/libpython3.9.so.1.0
#11 0x00007ffff7c7c25e in ?? () from /usr/lib/libpython3.9.so.1.0
#12 0x00007ffff7c7b644 in PyRun_SimpleFileExFlags () from /usr/lib/libpython3.9.so.1.0
#13 0x00007ffff7de3695 in Py_RunMain () from /usr/lib/libpython3.9.so.1.0
#14 0x00007ffff7db4349 in Py_BytesMain () from /usr/lib/libpython3.9.so.1.0
#15 0x00007ffff7a40b25 in __libc_start_main () from /usr/lib/libc.so.6
#16 0x000055555555504e in _start ()