On Debian 12, DBGSYM_PACKAGE_TYPE is defined the same as DEFAULT_PACKAGE_TYPE, which is 'deb' instead of 'ddeb' in Dh_Lib.pm.

So, the suffix of the dbgsym debug symbol packages is '.deb', and the changes in https://review.whamcloud.com/53378 ("LU-17347 debs: also move .ddeb files into debs/") will be causing the following build failure:

mv: cannot stat '../lustre-*-dbgsym_2.15.61-194-g5cda4a3-1_*.ddeb': No such file or directory
make: *** [autoMakefile:1318: debs] Error 1