a

README.md

@@ -24,6 +24,31 @@ You need:
 - your disks partitioned and mounted
 - this repo _(`git@tangled.sh:kris.darkworld.download/nix`)_
 
+## Build a custom installer ISO
+
+This flake now exposes an installer image with extra install tools preloaded
+(`git`, `disko`, partitioning and filesystem tools).
+
+Build it from this repo:
+
+```bash
+nix build .#installerIso
+```
+
+The ISO is created at:
+
+```text
+./result/iso/*.iso
+```
+
+Write it to a USB stick (replace `/dev/sdX`):
+
+```bash
+sudo dd if=./result/iso/*.iso of=/dev/sdX bs=4M status=progress oflag=sync
+```
+
+Then boot from that USB and follow the install steps below.
+
 ## Disk Layout
 
 This repo now uses `disko` for the default desktop host.

flake.nix

@@ -1,5 +1,5 @@
 {
-	description = "https://tangled.sh/@kris.darkworld.download/nix";
+	description = "Not a Deltarune reference!";
 
 	inputs = {
 		# Core
@@ -42,6 +42,20 @@
 	};
 
 	outputs = { self, nixpkgs, ... }@inputs: {
+		nixosConfigurations.installer = nixpkgs.lib.nixosSystem {
+			system = "x86_64-linux";
+			specialArgs = {
+				inherit inputs;
+			};
+			modules = [
+				"${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
+				./hosts/installer/configuration.nix
+			];
+		};
+
+		packages.x86_64-linux.installerIso =
+			self.nixosConfigurations.installer.config.system.build.isoImage;
+
 		nixosConfigurations.default = nixpkgs.lib.nixosSystem {
 			specialArgs = {
 				inherit inputs;

hosts/default/configuration.nix

@@ -79,6 +79,8 @@ in {
 		# at this point just hire the goober project to take them down for you
 	'';
 
+	networking.hostName = "darkworld";
+
 	powerManagement.enable = true;
 
 	services.avahi = {