Source: xorg-server Version: 2:1.20.1-2 Severity: serious Tags: ftbfs xorg-server no longer builds on s390x since libunwind-dev is not available on that architecture. (This also affects many ports.) https://buildd.debian.org/status/package.php?p=xorg-server https://buildd.debian.org/status/package.php?p=libunwind Thanks, Jeremy Bicha