Preparations for converting it to a flake

.gitignore

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-hardware-configuration.nix
-host-configuration.nix

host-configuration.nix.example

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-{ config, lib, pkgs, modulesPath, ... }:
-
-{
-  ### set hostname
-  # networking.hostname = "hostname";
-
-  # cryptsetup
-  boot.initrd.luks.devices = {
-    lvmroot = {
-      # device="/dev/disk/by-uuid/<UUID>";
-      allowDiscards = true;
-      fallbackToPassword = true;
-      preLVM = true;
-    };
-  };
-
-  # bootloader setup
-  boot.loader = {
-    efi = {
-      canTouchEfiVariables = true;
-      # nixos doesn't use a separate /efi and doesn't need it because the images are tiny
-      # efiSysMountPoint = "/boot";
-    };
-    systemd-boot = {
-      enable = true;
-      netbootxyz.enable = true;
-      memtest86.enable = true;
-    };
-  };
-}

sync.sh

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-#!/usr/bin/env bash
-sudo rsync -rlptDHAXviP ~/git/nixos-config/ /etc/nixos/ --exclude='*.example' --exclude='.git' --exclude=".gitignore" --exclude="sync.sh"