{ config, pkgs, lib, ... }: let tomlFormat = pkgs.formats.toml { }; manifest = (pkgs.lib.importTOML ../../Cargo.toml).package; in { options.program.${manifest.name} = { enable = lib.mkEnableOption "Enable the ${manifest.name} program"; package = lib.mkOption { type = lib.types.package; default = pkgs.callPackage ./default.nix { }; description = "The ${manifest.name} package to use."; }; settings = lib.mkOption { type = tomlFormat.type; default = { }; example = lib.literalExpression '' [test-01] one = "test one" ''; description = '' Configuration written to {file}`$XDG_CONFIG_HOME/${manifest.name}/config.toml`. ''; }; }; config = lib.mkIf config.program.${manifest.name}.enable { environment.systemPackages = [ config.program.${manifest.name}.package ]; # cat /run/current-system/etc/${manifest.name}/config.toml environment.etc."${manifest.name}/config.toml" = lib.mkIf (config.program.${manifest.name}.settings != { }) { source = tomlFormat.generate "config.toml" config.program.${manifest.name}.settings; }; }; }