Source: mpi4py Followup-For: Bug #840817 As you saw, this comes from debian/patches/up_libm, in attempting to deal with Bug#817884.
New version 3.0.2 handles libm.so a little differently. Let's keep the patch applied in the first instance to confirm that alpha is still affected. After that we can try removing the patch. The new upstream version should make the patch redundant (though perhaps the problem the patch was intended to fix will then affect only alpha). Drew -- System Information: Debian Release: bullseye/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled