{
  description = "NixOS config (clean direct flake)";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11"; # nixpkgs stable; used as the default source for all packages.
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable"; # unstable for when stable is too behind (called by prefixing the pkg with 'unstable.')

    home-manager = {
      # NixOS home-manager
      url = "github:nix-community/home-manager/release-25.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    stylix = {
      # Colorscheme and general style handling
      url = "github:danth/stylix/release-25.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    fenix = {
      # Rust tool-chain handler
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };

    nixcord.url = "github:FlameFlag/nixcord"; # NixOS discord flake

    nixos-hardware.url = "github:NixOS/nixos-hardware"; # NixOS hardware flake for simpler system specific optimisation
    agenix = {
      url = "github:ryantm/agenix";
      nixpkgs.follows = "nixpkgs";
      # choose not to download darwin deps (saves some resources on Linux)
      darwin.follows = "";
    };
  };

  outputs = inputs @ {
    self,
    nixpkgs,
    nixpkgs-unstable,
    home-manager,
    stylix,
    fenix,
    nixos-hardware,
    agenix,
    ...
  }: let
    system = "x86_64-linux";

    overlays = [
      (final: prev: {
        unstable = import nixpkgs-unstable {
          # handle the unstable prefix
          inherit system;
          config.allowUnfree = true;
        };
      })

      fenix.overlays.default
    ];
  in {
    nixosConfigurations = {
      ##################################### MYSTRA X220 MAIN LAPTOP (HARDENED) #####################################
      mystra = nixpkgs.lib.nixosSystem {
        inherit system;

        specialArgs = {inherit inputs;};

        modules = [
          {
            nixpkgs = {
              inherit overlays;
              config.allowUnfree = true;
            };
          }

          nixos-hardware.nixosModules.lenovo-thinkpad-x220
          agenix.nixosModules.default
          agenix.homeManagerModules.default # Install the agenix hM module aswell

          ./hosts/mystra/configuration.nix
          ./system

          stylix.nixosModules.stylix
          home-manager.nixosModules.home-manager

          {
            home-manager.users.mun.imports = [
              ./home/mun
              ./home/rices/schrottkatze/home.nix
            ];
          }
        ];
      };
      ##################################### HERRA HOME WORKSTATION #####################################
      herra = nixpkgs.lib.nixosSystem {
        inherit system;

        specialArgs = {inherit inputs;};

        modules = [
          {
            nixpkgs = {
              inherit overlays;
              config.allowUnfree = true;
            };
          }

          # TODO: Add amd gpu and intel cpu nixosnixos-hardware configs
          agenix.nixosModules.default
          agenix.homeManagerModules.default # Install the agenix hM module aswell

          ./hosts/herra/configuration.nix
          ./system

          stylix.nixosModules.stylix
          home-manager.nixosModules.home-manager

          {
            home-manager.users.mun.imports = [
              ./home/mun
              ./home/rices/cinnamon/home.nix
            ];
          }
        ];
      };
      ##################################### KRONOS HP ELITEBOOK CURRENT MAIN (BACKUP, HARDENED) LAPTOP #####################################
      kronos = nixpkgs.lib.nixosSystem {
        inherit system;

        specialArgs = {inherit inputs;};

        modules = [
          {
            nixpkgs = {
              inherit overlays;
              config.allowUnfree = true;
            };
          }
          nixos-hardware.nixosModules.hp-elitebook-830g6
          agenix.nixosModules.default
          agenix.homeManagerModules.default # Install the agenix hM module aswell

          ./hosts/kronos/configuration.nix
          ./system

          stylix.nixosModules.stylix
          home-manager.nixosModules.home-manager

          {
            home-manager.users.mun.imports = [
              ./home/mun
              ./home/rices/nord-blue/home.nix
            ];
          }
        ];
      };
    };
  };
}