{ description = "quox: quantitative extensional type theory";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    idris2-pkgs.url = "github:claymager/idris2-pkgs";
    nixpkgs.follows = "idris2-pkgs/nixpkgs";
  };

  outputs = { self, nixpkgs, idris2-pkgs, flake-utils }:
    let systems = [ "x86_64-darwin" "x86_64-linux" "i686-linux" ]; in
    flake-utils.lib.eachSystem systems (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ idris2-pkgs.overlay ];
        };
        builders = pkgs.idris2-pkgs._builders;

        packages =
          let inherit (builders) idrisPackage;
          in rec {
            quox-lib   = idrisPackage ./lib   { };
            quox       = idrisPackage ./exe   { extraPkgs = packages; };
            quox-tests = idrisPackage ./tests { extraPkgs = packages; };
          };

        devShells =
          let mkDevShell = _: pkg:
                pkgs.mkShell { buildInputs = [ (builders.devEnv pkg) ]; };
          in builtins.mapAttrs mkDevShell packages;
      in {
        inherit packages devShells;
        defaultPackage = packages.quox;
        devShell = devShells.quox-lib;
      }
    );
}