After commenting out said lines in simple-cdd, I got around the 32 bit installer problem in debian-cd by setting DISABLE_UEFI_32=1 .
Next problem... DEBUG build/debian-cd running command /home/eike/simple-cdd/tmp/log/build-debian-cd DEBUG build/debian-cd stdout: simple-cdd: Running debian-cd makefile DEBUG build/debian-cd stdout: Cleaning the build directory DEBUG build/debian-cd stdout: Updating task files... DEBUG build/debian-cd stdout: - copying task files from 'tasks/trixie/' DEBUG build/debian-cd stdout: - generating dynamic task files DEBUG build/debian-cd stderr: which_deb: can't find binary file(s) for task-desktop in trixie DEBUG build/debian-cd stderr: dpkg-deb: error: error reading archive magic version number from file /home/eike/simple-cdd/tmp/mirror/: Is a directory DEBUG build/debian-cd stdout: update_tasks: Using "" as the default desktop, as specified by DEBUG build/debian-cd stderr: Use of uninitialized value $default_desktop in concatenation (.) or string at /home/eike/simple-cdd/tmp/debian-cd/tools/update_tasks line 66. DEBUG build/debian-cd stderr: which_deb: can't find binary file(s) for tasksel-data in trixie DEBUG build/debian-cd stderr: dpkg-deb: error: error reading archive magic version number from file /home/eike/simple-cdd/tmp/mirror/: Is a directory DEBUG build/debian-cd stderr: can't open /home/eike/simple-cdd/tmp/cd-build/trixie/update_tasks/tasksel/usr/share/tasksel/descs/debian-tasks.desc: No such file or directory DEBUG build/debian-cd stderr: make: *** [Makefile:167: /home/eike/simple-cdd/tmp/cd-build/trixie/tasks] Error 2 DEBUG build/debian-cd retval: 2 ERROR build/debian-cd exited with code 2 I get the error "can't find binary file(s) for task-desktop in ..." for a working run in bookworm as well, including the lines following it. The following messages(s) seem to be fatal, though.

