{
  description = "a collection of personal nix configurations";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    home-manager.url = "github:nix-community/home-manager";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    hardware.url = "github:nixos/nixos-hardware";
    nix-colors.url = "github:misterio77/nix-colors";

    niri.url = "github:sodiboo/niri-flake";

    # input override due to mesa version mismatch
    hyprlock.url = "github:hyprwm/hyprlock";
    hyprlock.inputs.nixpkgs.follows = "nixpkgs";
    hypridle.url = "github:hyprwm/hypridle";

    waybar-catppuccin.url = "github:catppuccin/waybar";
    waybar-catppuccin.flake = false;
    fuzzel-catppuccin.url = "github:catppuccin/fuzzel";
    fuzzel-catppuccin.flake = false;
    rofi-catppuccin.url = "github:catppuccin/rofi";
    rofi-catppuccin.flake = false;

    catppuccin-vsc.url = "github:catppuccin/vscode";
  };

  outputs = inputs @ { self, nixpkgs, ... }:
    let
      inherit (lib.my) mapModules mapModulesRec mapHosts;
      system = "x86_64-linux";

      mkPkgs = pkgs: extraOverlays:
        import pkgs {
          inherit system;
          config.allowUnfree = true;
          config.allowAliases = true;
          overlays = extraOverlays ++ (lib.attrValues self.overlays);
        };
      pkgs = mkPkgs nixpkgs [
        self.overlays.default
        inputs.catppuccin-vsc.overlays.default
        inputs.niri.overlays.niri
      ];

      lib = nixpkgs.lib.extend (final: prev: {
        my = import ./lib {
          inherit pkgs inputs;
          lib = final;
        };
      });
    in {
      lib = lib.my;

      overlays =
        (mapModules ./overlays import)
        // {
          default = final: prev: {
            my = self.packages.${system};
          };
        };

      packages."${system}" = mapModules ./packages (p: pkgs.callPackage p {});

      nixosModules = mapModulesRec ./modules import;

      nixosConfigurations = mapHosts ./hosts {};
    };
}