refactor(zbm): We're not building in Arch Linux live CD ISO image (#3)

We don't need rsync anymore either since we
won't have to shuffle UEFI images around.

setup.sh

@@ -282,55 +282,6 @@ function mount_system () {
     mount "${efi_part}" '/mnt/efi'
 }
 
-function prepare_zfsbootmenu_efi_bin_pkg () {
-    #1.8
-    # Our Arch Linux will use prebuilt ZFSBootMenu UEFI image files for ease
-    # of use. We'd like to install them from within our chroot but the AUR
-    # package 'zfsbootmenu-efi-bin' that we're using currently (Friday,
-    # October 20, 2023) identifies its target EFI system partition (ESP) by
-    # doing 'lsblk' and checking the partition type name. Since within
-    # arch-chroot there's no '/run/udev' but only an empty '/run' tmpfs
-    # 'lsblk' cannot see partition type names and some other pieces of info.
-    #
-    # See also
-    # https://gitlab.archlinux.org/archlinux/arch-install-scripts/-/issues/24
-    #
-    # Thus within arch-chroot the installation of 'zfsbootmenu-efi-bin' and
-    # even 'makepkg -s' fails. We build the package in our Arch Linux live
-    # CD ISO image and copy the resulting file into our chroot.
-    #
-    # We circle back to the package file when we chroot into Arch and
-    # install_zbm_image().
-    pacman_cache_dir='/var/cache/pacman/pkg'
-    chroot_pacman_cache_dir='/mnt'"${pacman_cache_dir}"
-    git_zbm_efi_bin_dir='/tmp/zfsbootmenu-efi-bin'
-    sudo -u 'arch' git -C '/tmp' clone 'https://aur.archlinux.org/zfsbootmenu-efi-bin.git'
-
-    # We briefly bind-mount our ESP into '/efi' before we build the package.
-    # Its PKGBUILD will then find the ESP at the correct location and write
-    # a package file with that internal location ('/efi').
-    mkdir -p '/efi'
-    mount --bind '/mnt/efi' '/efi'
-    pushd "${git_zbm_efi_bin_dir}"
-    sudo -u 'arch' makepkg -s || {
-        >&3 printf -- '%s\n' 'Failed building zfsbootmenu-efi-bin package. Exiting ...'
-        exit 77
-    }
-    popd
-    umount '/efi'
-    rmdir '/efi'
-
-    package_file_abs="$(find "${git_zbm_efi_bin_dir}" -type f -iname '*pkg.tar.zst')"
-    package_file="$(basename "${package_file_abs}")"
-    mkdir -p "${chroot_pacman_cache_dir}"
-    rsync -av "${package_file_abs}" "${chroot_pacman_cache_dir}"'/'"${package_file}" || {
-        >&3 printf -- '%s\n' 'Failed rsyncing zfsbootmenu-efi-bin package file into chroot. Exiting ...'
-        exit 77
-    }
-    export ZFSBOOTMENU_EFI_BIN_PKG_PATH="${pacman_cache_dir}"'/'"${package_file}"
-    rm -rf "${git_zbm_efi_bin_dir}"
-}
-
 function copy_zpool_cache () {
     #1.9
     mkdir -p '/mnt/etc/zfs'
@@ -623,7 +574,7 @@ function install_os_in_chroot () {
     add_motd_getting_started_msg                #2.6
     get_aur_helper                              #2.7
     paru_install --replace-conflicting 'paru-bin'
-    paru_install 'zfs-dkms' 'zfs-utils' 'rsync'
+    paru_install 'zfs-dkms' 'zfs-utils' 'jq'
     hwclock --systohc
     mkinitcpio -P