New Nix config

Makefile

@@ -0,0 +1,99 @@
+.PHONY: init install link unlink rebuild update purge edit help
+
+NIXOS_DIR := /etc/nixos
+REPO_DIR := $(shell pwd)
+SETTINGS := settings.nix
+
+# Colors for output
+GREEN := \033[0;32m
+YELLOW := \033[0;33m
+RED := \033[0;31m
+NC := \033[0m # No Color
+
+help:
+	@echo "NixOS Config"
+	@echo ""
+	@echo "  make init     - first time setup"
+	@echo "  make rebuild  - rebuild nixos"
+	@echo "  make update   - upgrade + rebuild"
+	@echo "  make purge    - garbage collect"
+	@echo "  make link     - symlink to /etc/nixos"
+	@echo "  make unlink   - remove symlink"
+	@echo "  make edit     - edit settings.nix"
+
+init:
+	@if [ -f "$(SETTINGS)" ]; then \
+		echo "$(YELLOW)settings.nix exists. overwrite? [y/N]$(NC)"; \
+		read -r confirm; \
+		if [ "$$confirm" != "y" ] && [ "$$confirm" != "Y" ]; then \
+			echo "keeping existing settings"; \
+			exit 0; \
+		fi; \
+	fi
+	@username=$$(whoami); \
+	userdesc=$$(getent passwd $$username | cut -d: -f5 | cut -d, -f1); \
+	userdesc=$${userdesc:-$$username}; \
+	echo "user: $$username ($$userdesc)"; \
+	echo ""; \
+	echo "hostname:"; \
+	read -r hostname; \
+	echo "timezone [America/Edmonton]:"; \
+	read -r tz; \
+	tz=$${tz:-America/Edmonton}; \
+	echo "locale [en_CA.UTF-8]:"; \
+	read -r locale; \
+	locale=$${locale:-en_CA.UTF-8}; \
+	echo ""; \
+	echo "{" > $(SETTINGS); \
+	echo "  hostname = \"$$hostname\";" >> $(SETTINGS); \
+	echo "  username = \"$$username\";" >> $(SETTINGS); \
+	echo "  userDescription = \"$$userdesc\";" >> $(SETTINGS); \
+	echo "  timezone = \"$$tz\";" >> $(SETTINGS); \
+	echo "  locale = \"$$locale\";" >> $(SETTINGS); \
+	echo "  userGroups = [ \"networkmanager\" \"wheel\" \"docker\" \"plugdev\" ];" >> $(SETTINGS); \
+	echo "}" >> $(SETTINGS); \
+	echo "wrote settings.nix"
+	@if [ -f "/etc/nixos/hardware-configuration.nix" ]; then \
+		cp /etc/nixos/hardware-configuration.nix $(REPO_DIR)/hardware-configuration.nix; \
+		echo "copied hardware-configuration.nix"; \
+	else \
+		echo "$(YELLOW)no hardware-configuration.nix found - run nixos-generate-config first$(NC)"; \
+	fi
+	@$(MAKE) --no-print-directory link
+	@echo ""
+	@echo "done. run 'make rebuild' when ready"
+
+link:
+	@if [ -L "$(NIXOS_DIR)" ]; then \
+		sudo rm $(NIXOS_DIR); \
+	elif [ -d "$(NIXOS_DIR)" ]; then \
+		sudo mv $(NIXOS_DIR) $(NIXOS_DIR).bak; \
+		echo "backed up /etc/nixos to /etc/nixos.bak"; \
+	fi
+	@sudo ln -sf $(REPO_DIR) $(NIXOS_DIR)
+	@echo "linked $(REPO_DIR) -> $(NIXOS_DIR)"
+
+unlink:
+	@if [ -L "$(NIXOS_DIR)" ]; then \
+		sudo rm $(NIXOS_DIR); \
+		sudo mkdir -p $(NIXOS_DIR); \
+		echo "unlinked"; \
+	else \
+		echo "/etc/nixos is not a symlink"; \
+	fi
+
+rebuild:
+	sudo nixos-rebuild switch
+
+update:
+	sudo nixos-rebuild switch --upgrade
+
+purge:
+	sudo nix-collect-garbage -d
+	sudo /run/current-system/bin/switch-to-configuration boot
+
+check:
+	nix-instantiate '<nixpkgs/nixos>' -A system --dry-run
+
+edit:
+	@$${EDITOR:-nano} $(SETTINGS)