MAKEFLAGS += --warn-undefined-variables
SHELL := $(shell which bash)
.EXPORT_ALL_VARIABLES:
.ONESHELL:
.SHELLFLAGS := -eu -o pipefail -c
.SILENT:


.PHONY: add-pre-commit-hook
add-pre-commit-hook:
	printf '#!/bin/sh\nmake test\n' > .git/hooks/pre-commit
	chmod +x .git/hooks/pre-commit

#
# uses etc
#

.PHONY: sync-etc
sync-etc:
	sudo rsync -a --exclude='hardware-configuration.nix' nixos/ /etc/nixos/
	sudo nixos-rebuild switch --flake /etc/nixos#cesium
	sudo cp /etc/nixos/flake.lock nixos/flake.lock 2>/dev/null || true


.PHONY: upgrade-etc
upgrade-etc:
	sudo nix flake update --flake /etc/nixos --commit-lock-file
	sudo nixos-rebuild switch --flake /etc/nixos#cesium
	sudo cp /etc/nixos/flake.lock nixos/flake.lock 2>/dev/null || true


.PHONY: sync-etc-dry-run
sync-etc-dry-run:
	sudo rsync -a --dry-run --verbose --exclude='hardware-configuration.nix' nixos/ /etc/nixos/

#
# uses ./nixos
#

.PHONY: rebuild
rebuild:
	sudo nixos-rebuild switch --flake path:$(CURDIR)/nixos


.PHONY: upgrade
upgrade:
	sudo nix flake update --flake $(CURDIR)/nixos --commit-lock-file
	sudo nixos-rebuild switch --flake path:$(CURDIR)/nixos

#
# for both
#

.PHONY: cleanup
cleanup:
	sudo nix-store --optimise && sudo nix-collect-garbage -d


.PHONY: test
test:
	echo "Find nix files"
	find nixos -name "*.nix" | while read f; do
		echo "Checking $$f"
		nix-instantiate --parse "$$f" > /dev/null
	done
	echo "All files OK"

.DEFAULT_GOAL := test