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{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    haskell-flake.url = "github:srid/haskell-flake";
  };
  outputs = inputs@{ self, nixpkgs, flake-parts, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } {
      systems = nixpkgs.lib.systems.flakeExposed;
      imports = [
        inputs.haskell-flake.flakeModule
      ];

      perSystem = { self', pkgs, lib, config, ... }: {
        haskellProjects.default = {
          projectRoot = builtins.toString (lib.fileset.toSource {
            root = ./.;
            fileset = lib.fileset.unions [
              ./bin
              ./src
              ./specs
              ./chelleport.cabal
            ];
          });

          packages = {};
          settings = {};

          devShell = {
            # tools = hp: { fourmolu = hp.fourmolu; ghcid = null; };
            hlsCheck.enable = false;
          };

          autoWire = [ "packages" "apps" "checks" ];
        };

        packages.default = self'.packages.chelleport;
        apps.default = self'.apps.chelleport;

        devShells.default = pkgs.mkShell {
          inputsFrom = [
            config.haskellProjects.default.outputs.devShell
          ];
          packages = with pkgs; [
            just
            nodemon
          ];
        };
      };
    };
}