nix-auto-installer/installer.nix

{ lib, pkgs, modulesPath, config, ... }:

{
#  imports = [
#    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix"
#  ];
imports = [
  "${modulesPath}/installer/netboot/netboot-minimal.nix"
];
    
  networking.useDHCP = lib.mkDefault true;
  time.timeZone = "Australia/Brisbane";

  services.openssh.enable = true;
  services.openssh.settings.PermitRootLogin = "yes";

  environment.systemPackages = with pkgs; [
    git curl jq parted e2fsprogs btrfs-progs util-linux disko
  ];

#  environment.etc."flake-url".text = "git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git?ref=main#nixos";   

# Enable LISH
boot.kernelParams = [ "console=ttyS0,19200n8" ];
boot.loader.grub.extraConfig = ''
  serial --speed=19200 --unit=0 --word=8 --parity=no --stop=1;
  terminal_input serial;
  terminal_output serial;
'';

environment.etc."git-credentials".text = 
  "https://beatzaplenty:2b7e178eeee4af437fc721295d59e9e19366fd02@gitea.lan.ddnsgeek.com";
#programs.git.enable = true;
#programs.git.extraConfig."credential.helper" = "store --file=/etc/git-credentials";
  programs.git = {
    enable = true;
    package = pkgs.git;
    config = {
      credential.helper = "store --file=/etc/git-credentials";
    };
  };

  # Write auto-install script to /root
  environment.etc."auto-install.sh".text = ''
    #!/run/current-system/sw/bin/bash
    set -eux

    set -euo pipefail

export FLAKE_BASE_URL="git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git"

echo "Fetching available NixOS hosts from flake..."
mapfile -t options < <(
  nix eval --json --no-use-registries --no-accept-flake-config --extra-experimental-features "flakes nix-command" \
    "''${FLAKE_BASE_URL}#nixosConfigurations" \
    --apply builtins.attrNames \
  | jq -r '.[]'
)

if [[ ''${#options[@]} -eq 0 ]]; then
  echo "ERROR: No NixOS hosts found in ''${FLAKE_BASE_URL}#nixosConfigurations" >&2
  exit 1
fi

echo "Choose the flake profile to install:"
select choice in "''${options[@]}"; do
  if [[ -n "$choice" ]]; then
    echo "You selected: $choice"
    break
  else
    echo "Invalid selection. Try again."
  fi
done

echo "Starting install with flake: ''${FLAKE_BASE_URL}#''${choice}"

# Optional: confirm before proceeding
read -rp "Proceed with installation? (y/N): " confirm
if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
  echo "Aborted."
  exit 1
fi
    

    # parted -s /dev/sda -- mklabel msdos
    # parted -s /dev/sda -- mkpart primary 1MB -8GB
    # parted -s /dev/sda -- set 1 boot on
    # parted -s /dev/sda -- mkpart primary linux-swap -8GB 100%
    # mkfs.ext4 -L nixos /dev/sda1
    # mkswap -L swap /dev/sda2
    # swapon /dev/sda2
    # sleep 10
    # mount /dev/disk/by-label/nixos /mnt
    # mkdir -p /mnt/install-tmp
    # export TMPDIR=/mnt/install-tmp
    # nixos-install --flake "''${FLAKE_BASE_URL}#''${choice}" --no-root-password --no-write-lock-file

if nix eval --refresh --json  --extra-experimental-features "flakes nix-command" "''${FLAKE_BASE_URL}#nixosConfigurations.''${choice}.config.disko.devices.disk.main.device" >/dev/null 2>&1; then
    lsblk
    disko --mode destroy,format,mount \
        --flake "''${FLAKE_BASE_URL}#''${choice}"
else
    echo "Selected host has no Disko configuration."
    mount /dev/sda /mnt
fi

mkdir -p /mnt/install-tmp
export TMPDIR=/mnt/install-tmp

nixos-install \
    --flake "''${FLAKE_BASE_URL}#''${choice}" \
    --no-root-password


    rm -rf /mnt/install-tmp
    sleep 10
    reboot
  '';
#  environment.etc."auto-install.sh".mode = "0755";

  # Trigger the script from nixos user's shell
  # environment.etc."nixos/.bashrc".text = ''
  #   # Run installer only once
  #   if [ -n "$PS1" ] && [ ! -e ~/.auto_install_ran ]; then
  #     sudo /etc/auto-install.sh
  #     touch ~/.auto_install_ran
  #   fi
  # '';
  # environment.etc."nixos/.bashrc".mode = "0755";
  #Set root password
users.users.root = {
  hashedPassword = "$6$Kwv9KAyvcurAViQF$H4.u3feqGE7lVoNgkFXhE3n2Pmo//9JYDTCz8ifrVHBxPjwa1xMby7tEZ8Bpt5MXs9Rkx6/YbZWxs5CpH0s/70";
};

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.nixos = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    packages = with pkgs; [
      tree
    ];
    hashedPassword = "$6$Kwv9KAyvcurAViQF$H4.u3feqGE7lVoNgkFXhE3n2Pmo//9JYDTCz8ifrVHBxPjwa1xMby7tEZ8Bpt5MXs9Rkx6/YbZWxs5CpH0s/70";
    openssh.authorizedKeys.keys = [
    "ssh-rsa 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 wayne@stream"
  ];
  home = "/home/nixos";
  createHome = true;
  shell = pkgs.bashInteractive;

  };
#  environment.etc."auto-install.sh".source = ./auto-install.sh;
  environment.etc."auto-install.sh".mode = "0755";

  # environment.etc."home/nixos/.bashrc".text = ''
  #   if [ -n "$PS1" ] && [ ! -e ~/.auto_install_ran ]; then
  #     sudo /etc/auto-install.sh
  #     touch ~/.auto_install_ran
  #   fi
  # '';
  # environment.etc."home/nixos/.bashrc".mode = "0644";

  # Write .bashrc into the user's home directory
  # environment.etc."bashrc-nixos".source = pkgs.writeText "bashrc-nixos" ''
  #   if [ -n "$PS1" ] && [ ! -e ~/.auto_install_ran ]; then
  #     sudo /etc/auto-install.sh
  #     touch ~/.auto_install_ran
  #   fi
  # '';

    system.activationScripts.installBashProfile = {
    text = ''
      mkdir -p /home/nixos
      cp -f ${config.environment.etc."bash_profile-nixos".source} /home/nixos/.bash_profile
      chown nixos:nixos /home/nixos/.bash_profile
      chmod 644 /home/nixos/.bash_profile
    '';
  };


  environment.etc."bash_profile-nixos".source = pkgs.writeText "bash_profile-nixos" ''
    if [ -n "$PS1" ] && [ ! -e ~/.auto_install_ran ]; then
      sudo /etc/auto-install.sh
      touch ~/.auto_install_ran
    fi
  '';

  }