.PHONY: nixos all help

nixos-image:
	test `which packer` || { printf "Please install Packer from https://packer.io/\n"; exit 1; }; \
        vars=""; \
        test "$(VERSION)" && vars=" -var \"nixos-version=$(VERSION)\""; \
        test "$(BUILD)" && vars="$$vars -var \"build-version=$(BUILD)\""; \
	eval packer build "$$vars" .

all help:
	@printf "Please do not call this Makefile directly, use the wrapper located at the project root\n"