severity 1002402 important thanks Note: The package builds ok for me right now in bookworm.
A diff between a past failed build log and a current successful build log shows these differences: -Get:89 http://deb.debian.org/debian bookworm/main amd64 python3-scipy amd64 1.8.1-22 [17.2 MB] -Get:90 http://deb.debian.org/debian bookworm/main amd64 python3-numba amd64 0.56.4+dfsg-1+b1 [1693 kB] +Get:89 http://deb.debian.org/debian bookworm/main amd64 python3-scipy amd64 1.10.0-4 [15.2 MB] +Get:90 http://deb.debian.org/debian bookworm/main amd64 python3-numba amd64 0.56.4+dfsg-2 [1695 kB] So, as pointed out by Peter before, this does not seem to be a bug in python-sparse. Maybe this needs a reassign + close + affects + merge, but I'm not confident enough to do that myself, so I'm just downgrading because the problem seems solved. Thanks.