Hi! Since upstream supports LoongArch since version 1.7.0, it's enough to update src:libunwind in unstable to version 1.7.0 or higher.
Please note that the dpkg version on DAK already support loong64, so introducing the architecture in debian/control won't result in the package being rejected. See also #1054285 [1]. Adrian > [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054285 -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913