creating a custom installer iso

.github/workflows/build_systems copy.yml

@@ -0,0 +1,17 @@
+name: build_systems
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "0 0 1 * *"
+
+jobs:
+  build:
+    name: build-installer-iso
+    runs-on: self-hosted
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build default package
+        run: "nix build .#nixosConfigurations.installer.config.system.build.isoImage"

.gitignore

@@ -165,3 +165,6 @@ test.*
 
 # syncthing
 .stfolder
+
+# nixos build results
+result

flake.nix

@@ -91,6 +91,12 @@
           ];
           specialArgs = { inherit inputs outputs; };
         };
+        installer = lib.nixosSystem {
+          modules = [
+            ./systems/installer
+          ];
+          specialArgs = { inherit inputs outputs; };
+        };
       };
     };
 }

systems/installer/default.nix

@@ -0,0 +1,24 @@
+{
+  inputs,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+{
+  imports = [ (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix") ];
+
+  environment.systemPackages = with pkgs; [
+    git
+    python313
+    inputs.system_tools.packages.x86_64-linux.default
+  ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  systemd.services.sshd.wantedBy = pkgs.lib.mkForce [ "multi-user.target" ];
+
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJYZFsc9CSH03ZUP7y81AHwSyjLwFmcshVFCyxDcYhBT rhapsody-in-green" # cspell:disable-line
+  ];
+}