Thanks! Will try it. But for now, I'd like to attract your attention on two things about the build:
xorriso : NOTE : Copying to System Area: 26764 bytes from file '/home/sthibault/tmp/sid/boot1/boot/grub/grub_embed'libisofs: WARNING : Can't add /debian to Joliet tree. Symlinks can only be added to a Rock Ridge tree.libisofs: WARNING : Can't add /dists/unstable to Joliet tree. Symlinks can only be added to a Rock Ridge tree.libisofs: WARNING : Can't add /doc/FAQ/html/basic-defs.html to Joliet tree. Symlinks can only be added to a Rock Ridge tree. [...] [from https://people.debian.org/~sthibault/hurd-i386/installer/cdimage/daily/debian-cd.log ] and (I guess you had already noticed): The following packages have unmet dependencies: libbsd0-udeb : Depends: libmd0 (>= 1.0.3) but it is not installable E: Unable to correct problems, you have held broken packages. Makefile:633: recipe for target 'stamps/get_udebs-cdrom_gtk-stamp' failed make[4]: *** [stamps/get_udebs-cdrom_gtk-stamp] Error 100 Makefile:297: recipe for target '_build' failedmake[3]: *** [_build] Error 2 Makefile:291: recipe for target 'build_cdrom_gtk' failedmake[2]: *** [build_cdrom_gtk] Error 2 Makefile:297: recipe for target '_build' failedmake[1]: *** [_build] Error 2 Makefile:291: recipe for target 'build_cdrom_grub' failed [from: https://people.debian.org/~sthibault/hurd-i386/installer/cdimage/daily/build.log ]