Hello, When building the attached operating-system (very close to bare-bones.tmpl) with the following command: guix system disk-image --target=aarch64-linux-gnu mini.scm --no-grafts the produced disk-image weights 2.6G (2717242368 bytes). On the same branch in January it was around 1.5G. I'll check the same command for a native x86_64 system and report back. Mathieu