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{
  description = "Cybertrike.org";

  inputs = {
    nixinate.url = "github:matthewcroughan/nixinate";
    agenix.url = "github:ryantm/agenix";
    nixpkgs_unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05";
    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver";
  };

  outputs = inputs@{ self, nixpkgs, agenix, nixinate, nixpkgs_unstable, simple-nixos-mailserver }:
    let
      pkgs = nixpkgs.legacyPackages.x86_64-linux;
      webroot = "${self}/webroot";
    in
    {
      formatter.x86_64-linux = pkgs.nixpkgs-fmt;
      apps.x86_64-linux = (inputs.nixinate.nixinate.x86_64-linux inputs.self).nixinate;
      devShell.x86_64-linux =
        pkgs.mkShell {
          buildInputs = with pkgs; [ figlet tmux ];
          shellHook = ''
            # Session Name
            session="project-env-sh"

            # Check if the session exists, discarding output
            # We can check $? for the exit status (zero for success, non-zero for failure)
            tmux has-session -t $session 2>/dev/null

            if [ $? != 0 ]; then
                # Start New Session with our name
                tmux new-session -d -s $session

                # Name first Window and start zsh
                tmux rename-window -t 0 'Main'
                tmux send-keys -t 'Main' 'nix flake show' C-m
                tmux send-keys -t 'Main' 'clear' C-m

                # Create and setup pane for btop
                tmux split-window -h
                tmux rename-window 'btop'
                tmux send-keys -t 'btop' 'ssh -t commander@193.16.42.36 btop' C-m

                tmux select-pane -t 0

                # Create and setup pane for btop
                tmux split-window -v
                tmux rename-window 'ssh'
                tmux send-keys -t 'ssh' 'ssh commander@193.16.42.36' C-m

                tmux select-pane -t 0
            fi
            tmux attach-session -t $session'';
        };
      nixosConfigurations = {
        crash-over-burn-1 = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [
            simple-nixos-mailserver.nixosModule
            {
              mailserver = {
                fqdn = "mail.crashoverburn.com";
                domains = [ "mail.crashoverburn.com" "crashoverburn.com" ];
                enable = true;
                # A list of all login accounts. To create the password hashes, use
                # nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
                loginAccounts = {
                  "crash@crashoverburn.com" = {
                    hashedPasswordFile = "${self}/password.file";
                    aliases = [ "postmaster@mail.cybertrike.org" "overburn@cybertrike.org"];
                  };
                };
                certificateScheme = "acme-nginx";
              };
            }
            agenix.nixosModules.default
            ./openstack.nix
            (import ./website.nix { inherit webroot; })
            ./commander.nix
            {
                security.acme = {
                    acceptTerms = true;
                    defaults.email = "security@mail.cybertrike.org";
                };
              environment.systemPackages = [
                pkgs.btop
                pkgs.tmux
                pkgs.neovim
              ];
              imports = [
                "${nixpkgs}/nixos/modules/virtualisation/openstack-config.nix"
              ];
              _module.args.nixinate = {
                host = "193.16.42.36";
                sshUser = "commander";
                substituteOnTarget = true;
                hermetic = true;
                buildOn = "local";
              };
            }
          ];
        };
      };
    };
}