{
    description = "NixOS Configuration";

    inputs = {
        # General NixOS config
        nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
        nixpkgs-24-11.url = "github:NixOS/nixpkgs/nixos-24.11";
        # Colmena unstable
        colmena = {
            url = "github:zhaofengli/colmena";
            # inputs.nixpkgs.follows = "nixpkgs";
        };
        # Nixpkgs index for command-not-found support
        nix-index-database = {
            url = "github:nix-community/nix-index-database";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        # NixOS Grub Themes (hyperfluent)
        nixos-grub-themes = {
            url = "github:jeslie0/nixos-grub-themes";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        # SDDM Sugar Candy
        sddm-sugar-candy-nix = {
            url = "github:Zhaith-Izaliel/sddm-sugar-candy-nix";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        # Home Manager + Plasma
        home-manager = {
            url = "github:nix-community/home-manager/master";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        plasma-manager = {
            url = "github:nix-community/plasma-manager";
            inputs.nixpkgs.follows = "nixpkgs";
            inputs.home-manager.follows = "home-manager";
        };
        # Firefox Nightly + Addons
        firefox-nightly = {
            url = "github:nix-community/flake-firefox-nightly";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        firefox-addons = {
            type = "gitlab";
            owner = "rycee";
            repo = "nur-expressions";
            dir = "/pkgs/firefox-addons";
            
            inputs.nixpkgs.follows = "nixpkgs";
        };
        # VSCode extensions
        vscode-extensions = {
            url = "github:nix-community/nix-vscode-extensions";
            inputs.nixpkgs.follows = "nixpkgs";
        };
        # VSCode server support
        vscode-server.url = "github:nix-community/nixos-vscode-server";
    };

    outputs = inputs@{ self, nixpkgs, home-manager, nix-index-database, vscode-server, colmena, ... }: let
        system = "x86_64-linux";
        pkgs = nixpkgs.legacyPackages.${system};
        secrets = import ./secrets.nix;
    in {
        nixosConfigurations.ty-nixos = nixpkgs.lib.nixosSystem {
            inherit system;

            modules = [
                ./hosts/laptop

                # Better command-not-found
                nix-index-database.nixosModules.nix-index
                { programs.nix-index-database.comma.enable = true; }

                # Home manager
                home-manager.nixosModules.home-manager
                ./home-manager
                { meta.home-manager.preset = "plasma-desktop"; }
            ];

            specialArgs = {
                inherit inputs system secrets;
            };
        };

        nixosConfigurations."ty-laptop-server" = nixpkgs.lib.nixosSystem {
            inherit system;

            modules = [
                ./hosts/laptop-server

                # Better command-not-found
                nix-index-database.nixosModules.nix-index
                { programs.nix-index-database.comma.enable = true; }

                # Home manager
                home-manager.nixosModules.home-manager
                ./home-manager
                { meta.home-manager.preset = "cli"; }

                # VSCode server support
                vscode-server.nixosModules.default
                ({ pkgs, ... }: { services.vscode-server = { enable = true; nodejsPackage = pkgs.nodejs-18_x; installPath = "$HOME/.vscodium-server"; }; })
            ];

            specialArgs = {
                inherit inputs system secrets;
            };
        };

        colmenaHive = colmena.lib.makeHive self.outputs.colmena;
        colmena = {
            meta = {
                nixpkgs = import nixpkgs { system = "x86_64-linux"; };
                specialArgs = {
                    inherit inputs secrets;

                    system = "x86_64-linux";
                };
                allowApplyAll = false;
            };

            "ty-laptop-server" = { config, ... }: {
                deployment = {
                    replaceUnknownProfiles = false;
                    targetUser = "root";
                    targetHost = "old-lenovo-laptop"; # i should rename my tailscale devices properly
                    targetPort = 22;
                };

                imports = [
                    ./hosts/laptop-server

                    # Better command-not-found
                    nix-index-database.nixosModules.nix-index
                    { programs.nix-index-database.comma.enable = true; }

                    # Home manager
                    home-manager.nixosModules.home-manager
                    ./home-manager
                    {
                        ty-home-manager-options = {
                            plasma.enable = false;
                            beets.enable = false;
                            firefox.enable = false;
                            thunderbird.enable = false;
                            rescrobbled.enable = false;
                            vscode.enable = false;
                        };
                    }

                    # VSCode server support
                    vscode-server.nixosModules.default
                    ({ pkgs, ... }: { services.vscode-server = { enable = true; nodejsPackage = pkgs.nodejs-18_x; installPath = "$HOME/.vscodium-server"; }; })
                ];
            };
        };
    };
}