diff --git a/src/recipe/lang/Dart.c b/src/recipe/lang/Dart.c
index 3e55ec4..ee223df 100644
--- a/src/recipe/lang/Dart.c
+++ b/src/recipe/lang/Dart.c
@@ -4,7 +4,8 @@
  * File Authors  : Aoran Zeng <ccmywish@qq.com>
  * Contributors  :  Nil Null  <nil@null.org>
  * Created On    : <2023-09-10>
- * Last Modified : <2024-08-15>
+ * Last Modified : <2024-08-28>
+ * Revision      :      2
  * ------------------------------------------------------------*/
 
 /**
@@ -26,6 +27,7 @@ pl_dart_sources[] = {
 };
 def_sources_n(pl_dart);
 
+
 void
 pl_dart_getsrc (char *option)
 {
@@ -50,40 +52,67 @@ pl_dart_setsrc (char *option)
 {
   chsrc_yield_source_and_confirm (pl_dart);
 
-  char *towrite = NULL;
+  char *towrite1, *towrite2 = NULL;
 
-  char *pub = xy_2strjoin(source.url, "dart-pub");
-  char *flutter = xy_2strjoin(source.url, "flutter");
+  char *pub = xy_2strjoin (source.url, "dart-pub");
+  char *flutter = xy_2strjoin (source.url, "flutter");
 
   if (xy_on_windows)
     {
+      towrite1 = xy_strjoin (3, "$env:PUB_HOSTED_URL = \"", pub, "\"");
+      towrite2 = xy_strjoin (3, "$env:FLUTTER_STORAGE_BASE_URL = \"", flutter, "\"");
+
       if (xy_file_exist (xy_win_powershell_profile))
         {
-          towrite = xy_strjoin (4, "$env:PUB_HOSTED_URL = \"", pub, "\"");
-          chsrc_append_to_file (towrite, xy_win_powershell_profile);
-
-          towrite = xy_strjoin (4, "$env:FLUTTER_STORAGE_BASE_URL = \"", flutter, "\"");
-          chsrc_append_to_file (towrite, xy_win_powershell_profile);
+          chsrc_append_to_file (towrite1, xy_win_powershell_profile);
+          chsrc_append_to_file (towrite2, xy_win_powershell_profile);
         }
 
       if (xy_file_exist (xy_win_powershellv5_profile))
         {
-          towrite = xy_strjoin (4, "$env:PUB_HOSTED_URL = \"", pub, "\"");
-          chsrc_append_to_file (towrite, xy_win_powershellv5_profile);
-
-          towrite = xy_strjoin (4, "$env:FLUTTER_STORAGE_BASE_URL = \"", flutter, "\"");
-          chsrc_append_to_file (towrite, xy_win_powershellv5_profile);
+          chsrc_append_to_file (towrite1, xy_win_powershellv5_profile);
+          chsrc_append_to_file (towrite2, xy_win_powershellv5_profile);
         }
     }
   else
     {
-      towrite = xy_strjoin (3, "export PUB_HOSTED_URL=\"", pub, "\"");
-      chsrc_append_to_file (towrite, "~/.bashrc >> ~/.zshrc");
+      char *zshrc  = "~/.zshrc";
+      char *bashrc = "~/.bashrc";
 
-      towrite = xy_strjoin (3, "export FLUTTER_STORAGE_BASE_URL=\"", flutter, "\"");
-      chsrc_append_to_file (towrite, "~/.bashrc >> ~/.zshrc");
+      chsrc_backup (zshrc);
+      towrite1 = xy_strjoin (3, "export PUB_HOSTED_URL=\"", pub, "\"");
+      towrite2 = xy_strjoin (3, "export FLUTTER_STORAGE_BASE_URL=\"", flutter, "\"");
+      chsrc_append_to_file (towrite1, zshrc);
+      chsrc_append_to_file (towrite2, zshrc);
+
+      if (xy_file_exist (bashrc))
+        {
+          chsrc_backup (bashrc);
+          chsrc_append_to_file (towrite1, bashrc);
+          chsrc_append_to_file (towrite2, bashrc);
+        }
     }
   chsrc_conclude (&source, ChsrcTypeUntested);
 }
 
-def_target(pl_dart);
+
+FeatInfo
+pl_dart_feat (char *option)
+{
+  FeatInfo fi = {0};
+
+  fi.can_get = true;
+  fi.can_reset = false;
+
+  fi.stcan_locally = CanNot;
+  fi.locally = NULL;
+  fi.can_english = true;
+
+  /* 该换源方案中，URL存在拼凑，因此不能让用户手动使用某URL来换源 */
+  fi.can_user_define = false;
+
+  fi.note = "该换源通过写入环境变量实现，若多次换源，请手动清理profile文件";
+  return fi;
+}
+
+def_target_gsf(pl_dart);