.DEFAULT_GOAL := build

GUIX_MANIFEST := manifest.scm
GUIX_MANIFEST_DEV := manifest-dev.scm

TARBALL ?= guix-tarball-pack.tar.gz
LINKS_TARBALL ?= links.tar.gz
PASSWD_FILE ?= passwd
IMAGE_TAG ?= guix-builder

$(PASSWD_FILE):
	echo 'root:x:0:0:root:/root:/bin/sh' > passwd

$(LINKS_TARBALL):
	ln -s /guix-builder/bin bin
	tar -czvf $@ bin
	rm bin

$(TARBALL):
	@cp $$(guix pack -RR -S /bin=bin -S /etc/ssl=etc/ssl -S /lib/locale=lib/locale -m $(GUIX_MANIFEST)) $@
	@chmod +w $@

.PHONY: size
size: $(TARBALL)
	guix size $$(guix pack -RR -S /bin=bin -S /etc/ssl=etc/ssl -m $(GUIX_MANIFEST))

.PHONY: build
build: $(TARBALL) $(LINKS_TARBALL) $(PASSWD_FILE)
	@docker build -t $(IMAGE_TAG) .

.PHONY: run
run: build
	@docker run --rm -it \
          -v /var/guix/daemon-socket/socket:/var/guix/daemon-socket/socket \
          -v /gnu/store:/gnu/store:ro \
          -v /etc/ssl:/etc/ssl:ro \
          -e HOME=/tmp \
          -w /tmp \
          $(IMAGE_TAG):latest

.PHONY: shell
shell:
	@./shell.sh $(GUIX_MANIFEST) $(GUIX_MANIFEST_DEV)

.PHONY:
clean:
	rm -r $(TARBALL) $(LINKS_TARBALL) $(PASSWD_FILE)