Move EFI related commands/tasks into dedicated script

install.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -euo pipefail
 
-BASEDIR="$(dirname "${0}" | sed "s|^\.|${PWD}|")"
+baseDir="$(dirname "${0}" | sed "s|^\.|${PWD}|")"
 
 printf \
 	'\033[?47l\012'
@@ -9,7 +9,7 @@ printf \
 cat << EOF
 #######################################
 ##                                   ##
-##  $(cat "${BASEDIR}/title") Script  ##
+##  $(cat "${baseDir}/title") Script  ##
 ##                                   ##
 ##   Jean  <jean@easthighnerd.net>   ##
 ##                                   ##
@@ -27,7 +27,7 @@ EOF
 source \
 	/etc/os-release
 source \
-	"${BASEDIR}/system.conf"
+	"${baseDir}/system.conf"
 
 if [[ ! "${DISK}" == **/dev/disk/by-id/** ]]; then
 	if [[ "${DISK}" == **/dev/nvme** ]]; then
@@ -227,47 +227,7 @@ if [[ ! "${*}" = *--no-part* ]]; then
 fi
 
 if [[ ! "${*}" = *--no-part* ]]; then
-	mkdir \
-		-p \
-		/boot/efi/EFI/ZBM
-
-	mkdir \
-		-p \
-		/boot/efi/EFI/BOOT
-
-	curl \
-		--progress-bar \
-		--show-error \
-		--output \
-		/boot/efi/EFI/ZBM/VMLINUZ.EFI \
-		--location \
-		https://get.zfsbootmenu.org/efi
-
-	cp \
-		/boot/efi/EFI/ZBM/VMLINUZ.EFI \
-		/boot/efi/EFI/ZBM/VMLINUZ-BACKUP.EFI
-
-	cp \
-		/boot/efi/EFI/ZBM/VMLINUZ.EFI \
-		/boot/efi/EFI/BOOT/BOOTX64.EFI
-
-	cp \
-		/boot/efi/EFI/ZBM/VMLINUZ.EFI \
-		/boot/efi/EFI/BOOT/shellx64.efi
-
-	efibootmgr \
-		-c \
-		-d "${DISK}" \
-		-p '1' \
-		-L 'ZFSBootMenu (Backup)' \
-		-l '\EFI\ZBM\VMLINUZ-BACKUP.EFI'
-
-	efibootmgr \
-		-c \
-		-d "${DISK}" \
-		-p '1' \
-		-L 'ZFSBootMenu' \
-		-l '\EFI\ZBM\VMLINUZ.EFI'
+	"${baseDir}/efi.sh"
 fi
 
 if [[ "${ID}" == 'debian' ]] || [[ "${ID}" == 'elementary' ]]; then
@@ -289,4 +249,4 @@ zfs \
 	snapshot \
 	${HOSTNAME,,}/ROOT/${ID}@install
 
-"${BASEDIR}/post-inst.sh"
+"${baseDir}/post-inst.sh"