{
  inputs = {
    composer2nix.flake = false;
    composer2nix.url = "github:svanderburg/composer2nix";

    devshell.inputs.nixpkgs.follows = "nixpkgs";
    devshell.url = "github:numtide/devshell";

    flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
    flake-parts.url = "github:hercules-ci/flake-parts";

    import-tree.url = "github:vic/import-tree";

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

    nixpkgs-php74.url = "github:nixos/nixpkgs/81b77fd3847a";
  };

  outputs =
    inputs:
    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
      systems = [ "x86_64-linux" ];

      _module.args = {
        commonPhpPackages =
          pkgs: system:
          with pkgs;
          let
            composer2nix = import inputs.composer2nix { inherit system pkgs; };
          in
          [
            composer2nix
            paratest
            pest
            phpactor
            phpunit
          ];
      };

      imports = [
        inputs.devshell.flakeModule

        (inputs.import-tree ./modules)
      ];

      perSystem =
        { pkgs, ... }:
        {
          devshells.default = {
            packages = with pkgs; [ nixd ];
          };
        };
    };
}