We do a little refactoring + plasma theming

hosts/puzzlevision/configuration.nix

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+{
+  inputs,
+  lib,
+  config,
+  pkgs,
+  catppuccinifier,
+  ...
+}: {
+  # You can import other NixOS modules here
+  imports = [
+    # If you want to use modules from other flakes (such as nixos-hardware):
+    # inputs.hardware.nixosModules.common-cpu-amd
+    # inputs.hardware.nixosModules.common-ssd
+
+    # Import your generated (nixos-generate-config) hardware configuration
+    ./hardware-configuration.nix
+  ];
+
+  nixpkgs = {
+    # You can add overlays here
+    overlays = [
+      # If you want to use overlays exported from other flakes:
+      # neovim-nightly-overlay.overlays.default
+    ];
+    # Configure your nixpkgs instance
+    config = {
+      allowUnfree = true;
+    };
+  };
+
+  nix = {
+    # This will add each flake input as a registry
+    # To make nix3 commands consistent with your flake
+    registry = lib.mapAttrs (_: value: {flake = value;}) inputs;
+
+    # This will additionally add your inputs to the system's legacy channels
+    # Making legacy nix commands consistent as well, awesome!
+    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") config.nix.registry;
+
+    settings = {
+      auto-optimise-store = true;
+      builders-use-substitutes = true;
+      experimental-features = [ "nix-command" "flakes" "repl-flake" ];
+      keep-derivations = true;
+      keep-outputs = true;
+      max-jobs = "auto";
+      warn-dirty = false;
+    };
+
+    gc = {
+      automatic = true;
+      dates = "daily";
+      options = "--delete-older-than 3d";
+    };
+  };
+  
+  # Install the latest kernel
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+  # Improve SSD performance
+  fileSystems."/".options = [ "noatime" "nodiratime" "discard" ];
+
+  # Bootloader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  networking.hostName = "puzzlevision";
+
+  # Enable networking
+  networking.networkmanager.enable = true;
+
+  # Set your time zone.
+  time.timeZone = "Europe/Berlin";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "de_DE.UTF-8";
+    LC_IDENTIFICATION = "de_DE.UTF-8";
+    LC_MEASUREMENT = "de_DE.UTF-8";
+    LC_MONETARY = "de_DE.UTF-8";
+    LC_NAME = "de_DE.UTF-8";
+    LC_NUMERIC = "de_DE.UTF-8";
+    LC_PAPER = "de_DE.UTF-8";
+    LC_TELEPHONE = "de_DE.UTF-8";
+    LC_TIME = "de_DE.UTF-8";
+  };
+
+  # Configure console keymap
+  console.keyMap = "de";
+
+  # Enable CUPS to print documents.
+  services.printing.enable = true;
+
+  # Enable sound with pipewire.
+  sound.enable = true;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  # Enable bluetooth on boot
+  hardware.bluetooth.enable = true;
+  hardware.bluetooth.powerOnBoot = true;
+
+  # Enable docker
+  virtualisation.docker.enable = true;
+
+  # Enable touchpad support (enabled default in most desktopManager).
+  services.xserver.libinput.enable = true;
+
+  # Configure keymap in X11
+  services.xserver = {
+    xkb.layout = "de";
+    xkb.variant = "";
+  };
+
+  # Define a user account.
+  users.users = {
+    jo = {
+      isNormalUser = true;
+      description = "Jo";
+      extraGroups = [ "networkmanager" "wheel" "docker" "tty" "dialout" ];
+      packages = with pkgs; [
+        spotify
+        qflipper
+        wineWowPackages.waylandFull
+        vesktop
+        avra
+        avrdude
+        jetbrains.phpstorm
+        teams-for-linux
+        enpass
+        thunderbird
+        kde-rounded-corners
+      ];
+    };
+
+    work = {
+      isNormalUser = true;
+      description = "Work";
+      initialPassword = "fortnite";
+      extraGroups = [ "networkmanager" ];
+      packages = with pkgs; [
+        jetbrains.phpstorm
+        teams-for-linux
+        enpass
+        thunderbird
+      ];
+    };
+  };
+
+  programs.steam = {
+    enable = true;
+    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
+    dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
+  };
+
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [
+    nano
+    firefox
+    vlc
+    libreoffice
+
+    # For development
+    git
+    bun
+  ];
+
+  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
+  system.stateVersion = "23.05";
+}

hosts/puzzlevision/hardware-configuration.nix

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+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "vmd" "nvme" "rtsx_pci_sdmmc" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/864b1287-89fd-4cc0-98a5-40a3caf804c6";
+      fsType = "btrfs";
+      options = [ "subvol=@" ];
+    };
+
+  boot.initrd.luks.devices."luks-5fd4fc76-d5c5-46c3-b952-1a7a7ff3a1fc".device = "/dev/disk/by-uuid/5fd4fc76-d5c5-46c3-b952-1a7a7ff3a1fc";
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/2429-4141";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  fileSystems."/var/lib/docker/btrfs" =
+    { device = "/@/var/lib/docker/btrfs";
+      fsType = "none";
+      options = [ "bind" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.br-9b746f4e7e2f.useDHCP = lib.mkDefault true;
+  # networking.interfaces.docker0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlo1.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}