flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-compat.url = "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz";
    treefmt-nix.url = "github:numtide/treefmt-nix";
  };
  outputs =
    {
      self,
      nixpkgs,
      systems,
      treefmt-nix,
      ...
    }:
    let
      eachSystem = f: nixpkgs.lib.genAttrs (import systems) (system: f nixpkgs.legacyPackages.${system});

      treefmtEval = eachSystem (pkgs: treefmt-nix.lib.evalModule pkgs ./treefmt.nix);
    in
    {
      homeManagerModules.nixcord = import ./hm-module.nix;
    }
    // {
      # formatter & check
      formatter = eachSystem (pkgs: treefmtEval.${pkgs.system}.config.build.wrapper);
      checks = eachSystem (pkgs: {
        formatting = treefmtEval.${pkgs.system}.config.build.check self;
      });
    };
}