{ config, lib, pkgs, ... }: with lib; let cfg = config.programs.mangohud; settingsType = with types; (oneOf [ bool int float str path (listOf (oneOf [ int str ])) ]); renderOption = option: rec { int = toString option; float = int; path = int; bool = "false"; string = option; list = concatStringsSep "," (lists.forEach option (x: toString x)); }.${builtins.typeOf option}; renderLine = k: v: (if isBool v && v then k else "${k}=${renderOption v}"); renderSettings = attrs: strings.concatStringsSep "\n" (attrsets.mapAttrsToList renderLine attrs) + "\n"; in { options = { programs.mangohud = { enable = mkEnableOption (lib.mdDoc "Mangohud"); package = mkOption { type = types.package; default = pkgs.mangohud; defaultText = literalExpression "pkgs.mangohud"; description = lib.mdDoc "The Mangohud package to install."; }; enableSessionWide = mkOption { type = types.bool; default = false; description = lib.mdDoc '' Sets environment variables so that MangoHud is started on any application that supports it. ''; }; settings = mkOption { type = with types; attrsOf settingsType; default = { }; example = literalExpression '' { output_folder = ~/Documents/mangohud/; full = true; } ''; description = lib.mdDoc '' Configuration written to {file}`$XDG_CONFIG_HOME/MangoHud/MangoHud.conf`. See for the default configuration. ''; }; settingsPerApplication = mkOption { type = with types; attrsOf (attrsOf settingsType); default = { }; example = literalExpression '' { mpv = { no_display = true; } } ''; description = lib.mdDoc '' Sets MangoHud settings per application. Configuration written to {file}`$XDG_CONFIG_HOME/MangoHud/{application_name}.conf`. See for the default configuration. ''; }; }; }; config = mkIf cfg.enable { assertions = [ (hm.assertions.assertPlatform "programs.mangohud" pkgs platforms.linux) ]; home.packages = [ cfg.package ]; home.sessionVariables = mkIf cfg.enableSessionWide { MANGOHUD = 1; MANGOHUD_DLSYM = 1; }; xdg.configFile = { "MangoHud/MangoHud.conf" = mkIf (cfg.settings != { }) { text = renderSettings cfg.settings; }; } // mapAttrs' (n: v: nameValuePair "MangoHud/${n}.conf" { text = renderSettings v; }) cfg.settingsPerApplication; }; meta.maintainers = with maintainers; [ zeratax ]; }