From 112fc3ddb34e04fc1347f1301e4a6eed5015f472 Mon Sep 17 00:00:00 2001
From: Chris Kruining <c.kruining@4dotnet.nl>
Date: Thu, 31 Jul 2025 16:04:08 +0200
Subject: [PATCH] started to create an installer image (gum is AWESOME)

---
 flake.nix                              |  5 ++
 modules/nixos/nix/default.nix          |  2 +
 systems/x86_64-linux/varda/default.nix | 84 +++++++++++++++++++++++---
 3 files changed, 82 insertions(+), 9 deletions(-)

diff --git a/flake.nix b/flake.nix
index 08e767a..3d518fb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -99,6 +99,11 @@
       flux.overlays.default
     ];
 
+    system.hosts.varda.modules = with inputs; [
+      "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares-plasma6.nix"
+      "${nixpkgs}/nixos/modules/installer/cd-dvd/channel.nix"
+    ];
+
     homes.modules = with inputs; [
       stylix.homeModules.stylix
       plasma-manager.homeManagerModules.plasma-manager
diff --git a/modules/nixos/nix/default.nix b/modules/nixos/nix/default.nix
index 05c001a..7d1f069 100644
--- a/modules/nixos/nix/default.nix
+++ b/modules/nixos/nix/default.nix
@@ -15,6 +15,8 @@ in
     nix = {
       package = pkgs.nixVersions.latest;
 
+      extraOptions = "experimental-features = nix-command flakes";
+
       settings = {
         experimental-features = [ "nix-command" "flakes" ];
         allowed-users = [ "@wheel" ];
diff --git a/systems/x86_64-linux/varda/default.nix b/systems/x86_64-linux/varda/default.nix
index 2aa8c22..557d8f1 100644
--- a/systems/x86_64-linux/varda/default.nix
+++ b/systems/x86_64-linux/varda/default.nix
@@ -1,10 +1,8 @@
-{ pkgs, ... }:
+{ pkgs, lib, ... }:
+let
+  inherit (lib) mkForce;
+in
 {
-  imports = [
-    "${pkgs}/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares-plasma6.nix"
-    "${pkgs}/nixos/modules/installer/cd-dvd/channel.nix"
-  ];
-
   sneeuwvlok = {
     services = {
       networking.ssh.enable = true;
@@ -17,14 +15,82 @@
   };
 
   boot = {
-    kernelPackages = pkgs.linuxPackages_latest;
-    supportedFilesystems = lib.mkForce ["btrfs" "reiserfs" "vfat" "f2fs" "xfs" "ntfs" "cifs"];
+    supportedFilesystems = mkForce ["btrfs" "reiserfs" "vfat" "f2fs" "xfs" "ntfs" "cifs"];
   };
 
   services = {
     qemuGuest.enable = true;
-    openssh.settings.PermitRootLogin = "yes";
+    openssh.settings.PermitRootLogin = mkForce "yes";
   };
 
+  environment.systemPackages = with pkgs; [
+    # sbctl
+    git
+    gum
+    (
+      writeShellScriptBin "rescue" ''
+        #!/usr/bin/env bash
+        set -euo pipefail
+
+        gum "device name"
+
+        sudo mkdir -p /mnt/{dev,proc,sys,boot}
+        sudo mount -o bind /dev /mnt/dev
+        sudo mount -o bind /proc /mnt/proc
+        sudo mount -o bind /sys /mnt/sys
+        sudo chroot /mnt /nix/var/nix/profiles/system/activate
+        sudo chroot /mnt /run/current-system/sw/bin/bash
+
+        sudo mount /dev/vda1 /mnt/boot
+        sudo cryptsetup open /dev/vda3 cryptroot
+        sudo mount /dev/mapper/cryptroot /mnt/
+
+        sudo nixos-enter
+      ''
+    )
+    (
+      writeShellScriptBin "nix_installer"
+      ''
+        #!/usr/bin/env bash
+        set -euo pipefail
+
+        if [ "$(id -u)" -eq 0 ]; then
+        	echo "ERROR! $(basename "$0") should be run as a regular user"
+        	exit 1
+        fi
+
+        if [ ! -d "$HOME/github/sneeuwvlok/.git" ]; then
+        	git clone https://github.com/chris-kruining/sneeuwvlok.git "$HOME/github/sneeuwvlok"
+        fi
+
+        TARGET_HOST=$(ls -1 ~/github/sneeuwvlok/systems/*/default.nix | cut -d'/' -f6 | grep -v iso | gum choose)
+
+        if [ ! -e "$HOME/github/sneeuwvlok/hosts/$TARGET_HOST/disks.nix" ]; then
+        	echo "ERROR! $(basename "$0") could not find the required $HOME/github/sneeuwvlok/hosts/$TARGET_HOST/disks.nix"
+        	exit 1
+        fi
+
+        gum confirm  --default=false \
+        "🔥 🔥 🔥 WARNING!!!! This will ERASE ALL DATA on the disk $TARGET_HOST. Are you sure you want to continue?"
+
+        echo "Partitioning Disks"
+        sudo nix run github:nix-community/disko \
+        --extra-experimental-features "nix-command flakes" \
+        --no-write-lock-file \
+        -- \
+        --mode zap_create_mount \
+        "$HOME/dotfiles/hosts/$TARGET_HOST/disks.nix"
+
+        #echo "Creating blank volume"
+        #sudo btrfs subvolume snapshot -r /mnt/ /mnt/root-blank
+
+        #echo "Set up attic binary cache"
+        #attic use prod || true
+
+        sudo nixos-install --flake "$HOME/dotfiles#$TARGET_HOST"
+      ''
+    )
+  ];
+
   system.stateVersion = "23.11";
 }