Add Makefile and gitignore

.gitignore

@@ -0,0 +1,2 @@
+/result
+/system

Makefile

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+default: system image
+
+EXTRA_OPTIONS := \
+	--store /scratch/ \
+	--builders 'aarch64.nixos.community aarch64-linux - 64 64 big-parallel' \
+	--extra-substituters /?trusted=true \
+	--secret-key-files ''
+
+system: configuration.nix helios64.nix
+	nix-build '<nixpkgs/nixos>' \
+		--arg configuration ./configuration.nix \
+		-A config.system.build.toplevel \
+		-I nixpkgs=$(HOME)/nixpkgs/helios64 \
+		-o $@ \
+		$(EXTRA_OPTIONS)
+
+image: emmc-image.nix configuration.nix helios64.nix
+	nix-build '<nixpkgs/nixos>' \
+		--arg configuration ./emmc-image.nix \
+		-A config.system.build.sdImage \
+		-I nixpkgs=$(HOME)/nixpkgs/helios64 \
+		-o $@ \
+		$(EXTRA_OPTIONS)
+