From 9d888222669e6f2ebd4e875d5f6dab7dcdb97f51 Mon Sep 17 00:00:00 2001
From: Leyla Becker <git@jan-leila.com>
Date: Mon, 25 Nov 2024 22:37:08 -0600
Subject: [PATCH] started draft for installer

---
 build-installer.sh                            | 30 +++++++++++++
 .../installer/basic/configuration.nix         | 19 ++++++++
 configurations/installer/basic/default.nix    |  5 +++
 flake.nix                                     | 45 ++++++++++++-------
 util/default.nix                              | 10 +++++
 5 files changed, 94 insertions(+), 15 deletions(-)
 create mode 100644 build-installer.sh
 create mode 100644 configurations/installer/basic/configuration.nix
 create mode 100644 configurations/installer/basic/default.nix

diff --git a/build-installer.sh b/build-installer.sh
new file mode 100644
index 0000000..e124091
--- /dev/null
+++ b/build-installer.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --flake*|-f*)
+      if [[ "$1" != *=* ]]; then shift; fi
+      flake="${1#*=}"
+      ;;
+    # --user*|-u*)
+    #   if [[ "$1" != *=* ]]; then shift; fi
+    #   user="${1#*=}"
+    #   ;;
+    --help|-h)
+      echo "--help -h: print this message"
+      echo "--flake -f: set the flake to build an installer for"
+    #   echo "--user -u: set the user to install flake as on the target system"
+      exit 0
+      ;;
+    *)
+      echo "Error: Invalid argument $1"
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+flake=${flake:-"basic"}
+user=${user:-$USER}
+
+nix build .#installerConfigurations.$flake.config.system.build.isoImage
\ No newline at end of file
diff --git a/configurations/installer/basic/configuration.nix b/configurations/installer/basic/configuration.nix
new file mode 100644
index 0000000..4e63727
--- /dev/null
+++ b/configurations/installer/basic/configuration.nix
@@ -0,0 +1,19 @@
+{
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}: {
+  imports = [(modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix")];
+
+  systemd.services.sshd.wantedBy = pkgs.lib.mkForce ["multi-user.target"];
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AaAeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee username@host"
+  ];
+
+  isoImage.squashfsCompression = "gzip -Xcompression-level 1";
+
+  networking.hostName = "installer";
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}
diff --git a/configurations/installer/basic/default.nix b/configurations/installer/basic/default.nix
new file mode 100644
index 0000000..220a6fb
--- /dev/null
+++ b/configurations/installer/basic/default.nix
@@ -0,0 +1,5 @@
+{...}: {
+  imports = [
+    ./configuration.nix
+  ];
+}
diff --git a/flake.nix b/flake.nix
index 152ea63..e90e17c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -76,10 +76,30 @@
     util = import ./util {inherit inputs;};
     forEachPkgs = util.forEachPkgs;
 
+    mkNixosInstaller = util.mkNixosInstaller;
     mkNixosSystem = util.mkNixosSystem;
     mkDarwinSystem = util.mkDarwinSystem;
     mkHome = util.mkHome;
 
+    installerSystems = {
+      basic = mkNixosInstaller "basic" [];
+    };
+
+    nixosSystems = {
+      horizon = mkNixosSystem "horizon";
+      twilight = mkNixosSystem "twilight";
+      defiant = mkNixosSystem "defiant";
+    };
+
+    darwinSystems = {
+      hesperium = mkDarwinSystem "hesperium";
+    };
+
+    homeSystems = {
+      # stand alone home manager configurations here:
+      # name = mkHome "name"
+    };
+
     systemsHomes = nixpkgs.lib.attrsets.mergeAttrsList (
       nixpkgs.lib.attrsets.mapAttrsToList (hostname: system: (
         nixpkgs.lib.attrsets.mapAttrs' (user: _: {
@@ -88,8 +108,12 @@
         })
         system.config.home-manager.users
       ))
-      (inputs.self.nixosConfigurations // inputs.self.darwinConfigurations)
+      (nixosSystems // darwinSystems)
     );
+
+    homeConfigurations =
+      systemsHomes
+      // homeSystems;
   in {
     formatter = forEachPkgs (pkgs: pkgs.alejandra);
 
@@ -113,21 +137,12 @@
       };
     });
 
-    nixosConfigurations = {
-      horizon = mkNixosSystem "horizon";
-      twilight = mkNixosSystem "twilight";
-      defiant = mkNixosSystem "defiant";
-    };
+    installerConfigurations = installerSystems;
 
-    darwinConfigurations = {
-      hesperium = mkDarwinSystem "hesperium";
-    };
+    nixosConfigurations = nixosSystems;
 
-    homeConfigurations =
-      systemsHomes
-      // {
-        # stand alone configurations here:
-        # name = mkHome "name"
-      };
+    darwinConfigurations = darwinSystems;
+
+    homeConfigurations = homeConfigurations;
   };
 }
diff --git a/util/default.nix b/util/default.nix
index f04f9c9..41d985a 100644
--- a/util/default.nix
+++ b/util/default.nix
@@ -55,6 +55,16 @@ in {
       (lib.mkUnless condition no)
     ];
 
+  mkNixosInstaller = host: userKeys:
+    nixpkgs.lib.nixosSystem {
+      modules = [
+        {
+          # TODO: authorized keys for all users
+        }
+        ../configurations/nixos/${host}
+      ];
+    };
+
   mkNixosSystem = host:
     nixpkgs.lib.nixosSystem {
       specialArgs = {inherit inputs outputs util;};