Cheshire's neofetch

Icon	Hostname	Device type
	Cheshire	my main desktop
	Roon	laptop
	Shimakaze	NixOS WSL config
	Laffey	home server
	Noshiro	future framework laptop (?)

Yes, these are the names of warships.

.
├── hosts # All devices with their corresponding configurations
│  ├── cheshire
│  ├── glasgow
│  ├── iso
│  ├── laffey
│  │  └── services
│  ├── roon
│  └── shimakaze
├── modules # All modular configurations like shells, apps etc.
│  ├── apps
│  │  └── gaming 
│  ├── browsers
│  ├── desktops
│  │  └── theming
│  ├── editors
│  ├── email
│  ├── fonts
│  ├── git
│  ├── media
│  ├── nix
│  ├── nvidia
│  ├── overlays
│  ├── scripts
│  ├── services
│  └── shell
└── pkgs # Custom packages

To install my config you need a NixOS with flakes enabled:

    nix.settings.experimental-features = [ "nix-command" "flakes" ];

After that you need to copy hardware-config.nix from your current install to the desired host name for example hosts/cheshire. Then it's the matter of one sudo nixos-rebuild switch --flake .#<hostname from flake.nix> in the cloned repo directory.
Although it's the best to just look and copy the desired nix code as it's tailored for me so not everything will work for everyone.

If you want to add a managed config for qtile or any other application, you can add it using home-manager with built-in Nix fetchers from git/github/gitea. Example:

  home.file = {
    ".config/qtile".source = pkgs.fetchFromGitea {
      domain = "codeberg.org";
      owner = "Moskas";
      repo = "qtile-org";
      rev = "d643434dd9";
      sha256 = "sha256-9wEoLw3/ma1mvt2Jj2xPc6LejP2HIpBzqxQ+h7E50t8=";
    };
  };

You can also use config placed in the flake directory and source the configuration directory like so:

xdg.configFile.qtile.source = ./qtile;

cheshire's qtile destkop with gruvbox-dark colorscheme as of 02.03.2024

Since I have multiple devices and I'm using some more frequent than others, I've had more than one occurrence of, for example, my laptop being out of date compared to the desktop and just simply missing some of my configs that I have changed in the meantime.
It was annoying and tedious to keep everything up-to-date on every device, especially when I did install some additional applications on one host, removed some on the other, etc.
So when I learned about NixOS, I knew that it is something that will help me with that.
I tested it on my laptop for about half a year, then I decided to fully switch to it on all my devices and jump from configuration.nix to flake.nix for even easier device management.