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

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

    ironbar = {
      url = "github:JakeStanger/ironbar";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { nixpkgs, home-manager, ... }@inputs:
    let
      supportedSystems = nixpkgs.lib.systems.flakeExposed;
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;

      mkNixosSystem =
        hostname: system:
        nixpkgs.lib.nixosSystem {
          inherit system;

          specialArgs = {
            inherit inputs hostname;
            inputs' = builtins.mapAttrs (_: flake: {
              legacyPackages = flake.legacyPackages.${system} or { };
              packages = flake.packages.${system} or { };
            }) inputs;
          };

          modules = [
            ./hosts/common
            ./hosts/${hostname}
          ];
        };
    in
    {
      formatter = forAllSystems (
        system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
        in
        pkgs.nixfmt
      );

      nixosConfigurations = {
        dahlia = mkNixosSystem "dahlia" "x86_64-linux";
        ivy = mkNixosSystem "ivy" "x86_64-linux";
      };

      homeConfigurations = {
        "willow@dahlia" = home-manager.lib.homeManagerConfiguration {
          pkgs = nixpkgs.legacyPackages."x86_64-linux";
          extraSpecialArgs = {
            inherit inputs;
            hostname = "dahlia";
          };
          modules = [
            ./home/apr-dahlia.nix
            inputs.ironbar.homeManagerModules.default
          ];
        };

        "willow@ivy" = home-manager.lib.homeManagerConfiguration {
          pkgs = nixpkgs.legacyPackages."x86_64-linux";
          extraSpecialArgs = {
            inherit inputs;
            hostname = "ivy";
          };
          modules = [ ./home/apr-ivy.nix ];
        };
      };
    };
}