Bug#1056797: cypari2: ftbfs with cython 3.0.x

[Matthias Klose]

Package: src:cypari2
Version: 2.1.2-4
Severity: important
Tags: sid trixie
User: debian-python at lists.debian.org
Usertags: cython3

[This bug is targeted to the upcoming trixie release]

The package fails to build in a test rebuild on at least arm64 with
cython 3.0.5, but succeeds to build with cython 0.29.36.  Please
update the package to build with cython 3.0.5 (available in experimental).

If the package cannot be built with cython 3.0.5, please change the
build dependency from cython3 to cython3-legacy (available now in
unstable).  There is no replacement for cython3-dbg.

Build logs building with cython 3.0.5 can be found at
https://people.debian.org/~stefanor/cython3/cython-3.0.5/

See also https://lists.debian.org/debian-python/2023/11/msg00034.html