{
  description = "HortusFox — self-hosted plant manager, from source";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        systems = [ "x86_64-linux" "aarch64-linux" ];
        forEachSystem = nixpkgs.lib.genAttrs systems;
        pkgs = nixpkgs.legacyPackages.${system};

        overlayList = [ self.overlays.default ];

        pkgsBySystem = forEachSystem (
          system:
          import nixpkgs {
            inherit system;
            overlays = overlayList;
          }
        );

    in {
      nixosConfigurations.test = nixpkgs.lib.nixosSystem {
        inherit system;
        modules = [ ./tests ];
      });

      overlays.default = final: prev: { hortusfox-web = final.callPackage ./package.nix { }; };

      packages = {
        hortusfox-web = pkgs.${system}.hortusfox-web;
        default = pkgs.${system}.hortusfox-web;
      };

      nixosModules.default = import ./nixos-module { overlays = overlayList; };

      # Handy for `nix flake check` on a throwaway host
      checks = forEachSystem (system: {
        build = pkgsBySystem.${system}.hortusfox-web;
      });
    };
}