Makefile

.RECIPEPREFIX := $(.RECIPEPREFIX) 

all: test-sudo
    @echo "building ISO..."
    @./build.sh
update: test-sudo
    @rm -rf work
    @echo "creating update package..."
    @mkdir work work/fs
    @7z e out/$$(ls -Art out | tail -n 1) -o./work arch/x86_64/airootfs.sfs
    @unsquashfs -f -d ./work/fs ./work/airootfs.sfs
    @( cd ./work/fs && rm -rf etc/fstab etc/passwd etc/shadow etc/hostname etc/calamares etc/sudoers etc/group etc/gdm/custom.conf etc/xdg/Trolltech.conf etc/xdg/autostart/calamares.desktop etc/sudoers.d/g_wheel etc/pacman.d/gnupg )
    @( cd ./work/fs && rm -rf usr/bin/calamares usr/bin/calamares_polkit )
    @( cd ./work/fs && rm -rf usr/lib/calamares usr/lib/libcalamares* usr/lib/initcpio/hooks/archiso* && rm -rf usr/lib/firmware )
    @( cd ./work/fs && rm -rf var/lib/pacman/local )
    @( cd ./work/fs && rm -rf boot dev home mnt proc root run srv sys tmp )
    @sed -i 's/archiso archiso_loop_mnt archiso_pxe_common archiso_pxe_nbd archiso_pxe_http archiso_pxe_nfs //g' ./work/fs/etc/mkinitcpio.conf
    @( cd ./work/fs && tar -cf - . | pv -s $$(du -sb . | awk -v OFMT='%d' '{ print $$1*1.02 }' | cut -f1) | gzip -9 > ../../out/update.tar.gz )
    @rm -rf work
test-sudo:
    @test $$UID = 0 || ( echo "error: must be root to do this."; false )