variant have been renamed gameid_template and now allow to change the entire game id instead of only the end part.

Pack/MKWFaraphel/mod_config.json

@@ -2,7 +2,7 @@
     "version": "v0.12",
     "name": "Mario Kart Wii Faraphel",
     "nickname": "MKWF",
-    "variant": "60",
+    "gameid_template": "RMC{{region}}60",
 
     "global_settings": {
         "include_track_if": {

source/mkw/ExtractedGame.py

@@ -278,7 +278,7 @@ class ExtractedGame:
             '',
             '    <patch id="save_SD">',
             '        <savegame clone="false"',
-            f'            external="/{RIIVOLUTION_FOLDER_NAME}/save/{"{$__gameid}{$__region}"}{mod_config.variant}"/>',
+            f'            external="/{RIIVOLUTION_FOLDER_NAME}/save/{self.original_game.get_patched_gameid(mod_config)}"/>',
             '    </patch>',
             '</wiidisc>',
         ))

source/mkw/Game.py

@@ -67,11 +67,24 @@ class Game:
             except StopIteration as e:
                 return e.value
 
+    def get_patched_gameid(self, mod_config: ModConfig) -> str:
+        """
+        :return: the patched game id
+        """
+        region: str = self.wit_path.id[3]
+        return mod_config.multiple_safe_eval(template=mod_config.gameid_template, args=["region"])(region=region)
+
     def edit(self, mod_config: ModConfig) -> Generator[Progress, None, None]:
+        """
+        Edit some metadata about the game
+        :param mod_config: the mod configuration
+        """
+
         yield Progress(description=_("TEXT_CHANGING_GAME_METADATA"), determinate=False)
+
         self.wit_path.edit(
             name=mod_config.name,
-            game_id=self.wit_path.id[:4] + mod_config.variant
+            game_id=self.get_patched_gameid(mod_config)
         )
 
     @staticmethod

source/mkw/ModConfig.py

@@ -5,6 +5,7 @@ from typing import Generator, Callable, Iterator, TYPE_CHECKING
 import json
 from PIL import Image
 
+from source.mkw.collection.Region import Region
 from source.utils import threaded
 from source.mkw import Tag
 from source.mkw.ModSettings.ModSettingsGroup import ModSettingsGroup
@@ -75,7 +76,7 @@ class ModConfig:
     name: str
     nickname: str = None
     version: str = "v1.0.0"
-    variant: str = "01"
+    gameid_template: "TemplateMultipleSafeEval" = "RMC{{region}}01"
 
     _tracks: list["Track | TrackGroup | dict"] = field(default_factory=list)
     default_track_attributes: dict[str, any] = field(default_factory=dict)
@@ -470,3 +471,6 @@ class ModConfig:
             # if there is more than the max amount of thread running, wait for one to finish
         while len(normalize_threads) > 0: yield from remove_finished_threads()
         # if there is no longer any track to add, wait for all process to finish
+
+    def get_gameid(self, region: Region):
+        pass