{
  description = "Evie's machine configurations";

  nixConfig = {
    extra-substituters = ["https://nix.xenia.me.uk"];
    extra-trusted-public-keys = ["nix.xenia.me.uk:tlgwOaG5KMLjQUk2YaErS8mAG69ZCr3PaHXZYi+Y5eI="];
  };

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
    iosevka-custom.url = "git+https://git.xenia.me.uk/pixelifytica/iosevka.git";
    niri = {
      url = "github:yalter/niri/v0.1.6"; # Follow stable releases
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = {
    nixpkgs,
    iosevka-custom,
    niri,
    ...
  }: let
    defaultSpecialArgs = {system ? "x86_64-linux", ...}: {
      niri = niri.packages.${system}.default;
      iosevkaCustom = {
        packages = iosevka-custom.outputs.packages.${system};
        names = iosevka-custom.outputs.names;
      };
    };
    defaultModules = {
      hostName ? "Atlas",
      primaryUser ? "pixelifytica",
      loginShell ? "zsh",
      ...
    }: [
      ./configuration/default.nix
      ./configuration/${hostName}.nix
      ./hardware-configuration/${hostName}.nix
      ({
        config,
        lib,
        pkgs,
        ...
      }: {
        networking = {inherit hostName;};
        nix = {
          settings.trusted-users = [primaryUser];
          registry = {
            nixpkgs.flake = nixpkgs;
            my-nixos = {
              from = {
                type = "indirect";
                id = "my-nixos";
              };
              to = {
                type = "git";
                url = "https://git.xenia.me.uk/pixelifytica/nixos.git?ref=main";
              };
            };
            my-home-manager = {
              from = {
                type = "indirect";
                id = "my-home-manager";
              };
              to = {
                type = "git";
                url = "https://git.xenia.me.uk/pixelifytica/home-manager.git?ref=main";
              };
            };
          };
        };
        services.greetd.settings.initial_session.user = primaryUser;
        programs.${loginShell}.enable = true;
        users.users.${primaryUser} = {
          shell = pkgs.${loginShell};
          group = "users";
          isNormalUser = true;
          description = "Evie Litherland-Smith";
          extraGroups = ["networkmanager" "wheel" "video" "input" "uinput"];
          initialHashedPassword = "$y$j9T$tHIPQt09Kf3KH2eIRze3g/$2mwSlcq27DTGvHNPJ5EP9/1CfL3bXP0F6oS/Vuffmn3";
          openssh = {inherit (config.users.users.root.openssh) authorizedKeys;};
        };
      })
    ];
  in {
    devShells.x86_64-linux.default = let
      pkgs = import nixpkgs {system = "x86_64-linux";};
    in
      pkgs.mkShellNoCC {
        packages = [pkgs.nil];
      };
    nixosConfigurations = {
      ## Server
      Legion = nixpkgs.lib.nixosSystem rec {
        system = "x86_64-linux";
        specialArgs = defaultSpecialArgs {inherit system;};
        modules = defaultModules {
          hostName = "Legion";
          primaryUser = "pixelifytica";
          loginShell = "zsh";
        };
      };
      ## Personal
      Northstar = nixpkgs.lib.nixosSystem rec {
        system = "x86_64-linux";
        specialArgs = defaultSpecialArgs {inherit system;};
        modules = defaultModules {
          hostName = "Northstar";
          primaryUser = "pixelifytica";
          loginShell = "zsh";
        };
      };
      Vanguard = nixpkgs.lib.nixosSystem rec {
        system = "x86_64-linux";
        specialArgs = defaultSpecialArgs {inherit system;};
        modules = defaultModules {
          hostName = "Vanguard";
          primaryUser = "pixelifytica";
          loginShell = "zsh";
        };
      };
      ## Work
      Tone = nixpkgs.lib.nixosSystem rec {
        system = "x86_64-linux";
        specialArgs = defaultSpecialArgs {inherit system;};
        modules = defaultModules {
          hostName = "Tone";
          primaryUser = "elitherl";
          loginShell = "zsh";
        };
      };
      Scorch = nixpkgs.lib.nixosSystem rec {
        system = "x86_64-linux";
        specialArgs = defaultSpecialArgs {inherit system;};
        modules = defaultModules {
          hostName = "Scorch";
          primaryUser = "elitherl";
          loginShell = "zsh";
        };
      };
    };
  };
}