--- /dev/null
+.FORCE:
+
+define PARTITIONS =
+label: dos\n\
+unit: sectors\n\
+\n\
+: start=8192, size=114688, type=1, type=c\n\
+: start=122880, type=83\n
+endef
+
+define SOURCES =
+deb http://raspbian.raspberrypi.org/raspbian stretch main non-free firmware rpi\n\
+deb http://archive.raspberrypi.org/debian stretch main\n
+endef
+BOOTSTRAP := http://raspbian.raspberrypi.org/raspbian
+
+define SOURCES =
+deb http://localhost/raspbian stretch main non-free firmware rpi\n
+endef
+BOOTSTRAP := http://localhost/raspbian
+
+PACKAGES := apt apt-transport-https bluez bluez-firmware btrfs-tools busybox-static bzip2 ca-certificates cron deborphan firmware-atheros firmware-brcm80211 firmware-libertas firmware-linux-free firmware-misc-nonfree firmware-realtek gzip htop ifupdown init iptables iputils-ping irqbalance isc-dhcp-client less libraspberrypi-bin libraspberrypi0 make net-tools nmap ntpdate openssh-client openssh-server p7zip-full raspberrypi-bootloader raspberrypi-kernel rpi-update rsync ssh sshfs sudo systemd traceroute unace unrar-free unzip vim wget wireless-tools wpasupplicant xz-utils zip
+
+raspi_root: /usr/bin/qemu-arm-static
+ btrfs subvolume create "$@" || mkdir "$@"
+ mkdir -p "$@/usr/bin"
+ chmod 755 -R "$@/"
+ cp -p "$<" "$@/usr/bin/"
+ debootstrap --keyring=./raspbian-archive-keyring.gpg \
+ --arch=armhf --variant=minbase \
+ stretch "$@/" "${BOOTSTRAP}"
+
+raspi_root/: raspi_root .FORCE
+ printf '${SOURCES}' >$@/etc/apt/sources.list
+ -chroot "$@" apt-key add - <./raspberrypi-archive-keyring.gpg
+ -cp /etc/resolv.conf "$@etc/"
+ # for tree in ${CONFIG}; do for file in apt default timezone; do cp -av "$$tree/etc/$$file" "$@/etc/" || true; done; done
+ -chroot "$@" sh -c 'apt-mark showmanual |xargs apt-mark auto'
+ -chroot "$@" apt-get update
+ chroot "$@" ln -sf /bin/true /usr/local/sbin/invoke-rc.d
+ chroot "$@" apt-get --yes install ${PACKAGES}
+ chroot "$@" apt-get --yes --auto-remove purge
+ chroot "$@" apt-get --yes --auto-remove upgrade
+ chroot "$@" rm /usr/local/sbin/invoke-rc.d
+ chroot "$@" apt-get clean
+ touch "$@"
+
+raspi.img: raspi_root/
+ -rmdir "$@.mnt"
+ mkdir "$@.mnt"
+ dd bs=1M count=0 seek=1024 of="$@"
+ printf '${PARTITIONS}' |sfdisk "$@"
+ lo=$$(losetup -f); image='$@'; \
+ start=$$(sfdisk --dump "$$image" |sed -rn 's;^.*start= *([0-9]+),.*type=83;\1;p'); \
+ size=$$(sfdisk --dump "$$image" |sed -rn 's;^.*size= *([0-9]+),.*type=83;\1;p'); \
+ losetup -o $$((start * 512)) --sizelimit $$((size * 512)) "$${lo}" "$$image" && \
+ mkfs.ext4 "$$lo" && mount -t ext4 "$$lo" "$@.mnt/";
+ mkdir "$@.mnt/boot"
+ lo=$$(losetup -f); image='$@'; \
+ start=$$(sfdisk --dump "$$image" |sed -rn 's;^.*start= *([0-9]+),.*type=c;\1;p'); \
+ size=$$(sfdisk --dump "$$image" |sed -rn 's;^.*size= *([0-9]+),.*type=c;\1;p'); \
+ losetup -o $$((start * 512)) --sizelimit $$((size * 512)) "$${lo}" "$$image" && \
+ mkfs.vfat "$$lo" && mount -t vfat "$$lo" "$@.mnt/boot";
+ rsync -av "$<" "$@.mnt/"
+ umount "$@.mnt/boot/" "$@.mnt/"
+ losetup -a |sed -rn '/$@/{s;^([^:]+):.*$$;\1;p;q}' |xargs losetup -d
+ losetup -a |sed -rn '/$@/{s;^([^:]+):.*$$;\1;p;q}' |xargs losetup -d
+ rmdir "$@.mnt/"