{ lib, flake-parts-lib, ... }: let inherit (lib) mkOption types getExe ; inherit (flake-parts-lib) mkTransposedPerSystemModule ; programType = lib.types.coercedTo derivationType getExe lib.types.str; derivationType = lib.types.package // { check = lib.isDerivation; }; appType = lib.types.submodule { options = { type = mkOption { type = lib.types.enum [ "app" ]; default = "app"; description = '' A type tag for `apps` consumers. ''; }; program = mkOption { type = programType; description = '' A path to an executable or a derivation with `meta.mainProgram`. ''; }; }; }; in mkTransposedPerSystemModule { name = "apps"; option = mkOption { type = types.lazyAttrsOf appType; default = { }; description = '' Programs runnable with nix run ``. ''; example = lib.literalExpression or lib.literalExample '' { default.program = "''${config.packages.hello}/bin/hello"; } ''; }; file = ./apps.nix; }