add themes

games.nix

@@ -9,7 +9,7 @@ in
 {
   retronix = {
     systems = {
-      "Arcade" = {
+      "arcade" = {
         extension = ".sh";
         games = with pkgs.roms; mapRetroarchConfig {} [
           atetris
@@ -24,6 +24,14 @@ in
     emulationstation = {
       inputCfgFile = mkFile "es_input.cfg" ./es_input.cfg;
       settingsCfgFile = mkFile "es_settings.cfg" ./es_settings.cfg;
+      themes = {
+        "ComicBook" = pkgs.fetchFromGitHub {
+          owner = "TMNTturtleguy";
+          repo = "es-theme-ComicBook";
+          rev = "master";
+          hash = "sha256-Mma7/5osIvTdTM8Z0vkJBW/4p3O6wms6nBApxB7+IiA=";
+        };
+      };
     };
   };
 }

modules/es-config.nix

@@ -121,6 +121,10 @@ in {
         themesDir = lib.mkOption {
           type =  lib.types.path;
         };
+        themes = lib.mkOption {
+          type = lib.types.attrsOf lib.types.path;
+          default = {};
+        };
         inputCfg = lib.mkOption {
           type = lib.types.str;
           default = "";
@@ -157,6 +161,12 @@ in {
         </systemList>
       '';
       inputCfgFile = lib.mkDefault (pkgs.writeTextDir "es_input.cfg" cfg.inputCfg);
+      themesDir = let
+        copyCommands = lib.concatLines (lib.mapAttrsToList (k: v: "cp -r ${v} $out/themes/${k}") cfg.themes);
+      in pkgs.runCommand "es-themes" {} ''
+        mkdir -p $out/themes
+        ${copyCommands}
+        '';
       homeDir = pkgs.symlinkJoinSubdir {
         name = "es-config-dir";
         subdir = ".emulationstation";
@@ -164,6 +174,7 @@ in {
           cfg.systemCfgFile
           cfg.inputCfgFile
           cfg.settingsCfgFile
+          cfg.themesDir
         ] ++ cfg.extraConfigFiles;
       };
       cli = pkgs.writeScript "emulationstation" "${pkgs.emulationstationPatched}/bin/emulationstation --home ${cfg.homeDir} --gamelist-only";