* gnu/system.scm (%base-packages-interactive): Add nvi. * gnu/system/install.scm (installation-os)[packages]: Remove parted, gptfdisk, ddrescue, cryptsetup, mdadm, dosfstools, btrfs-progs, f2fs-tools, jfstools, openssh, wireless-tools, iw, wpa-supplicant-minimal, iproute, bash-completion, nvi. Add %base-packages-disk-utilities.