Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: flutter 0 -> 1
attrpath: flutter
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/i9cwc5wbbmcif90mz7w85wfzyxhh3yri-packages.json.drv
building '/nix/store/i9cwc5wbbmcif90mz7w85wfzyxhh3yri-packages.json.drv'...

Going to be running update for following packages:
 - flutter-wrapped-3.38.7-sdk-links

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - flutter-wrapped-3.38.7-sdk-links: UPDATING ...
 - flutter-wrapped-3.38.7-sdk-links: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/compilers/flutter/versions/3_38/data.json b/pkgs/development/compilers/flutter/versions/3_38/data.json
index 1767260d8c3c..afe4a4149279 100644
--- a/pkgs/development/compilers/flutter/versions/3_38/data.json
+++ b/pkgs/development/compilers/flutter/versions/3_38/data.json
@@ -6,11 +6,9 @@
   "channel": "stable",
   "engineHashes": {
     "aarch64-linux": {
-      "aarch64-linux": "sha256-bsC6dzVGf9JsfwGjn7FRC4EqjgBl6VDzpHDlgDTTZuI=",
-      "x86_64-linux": "sha256-bsC6dzVGf9JsfwGjn7FRC4EqjgBl6VDzpHDlgDTTZuI="
+      "aarch64-linux": "sha256-bsC6dzVGf9JsfwGjn7FRC4EqjgBl6VDzpHDlgDTTZuI="
     },
     "x86_64-linux": {
-      "aarch64-linux": "sha256-Bl3xaFAWNj93Vxz6lM1g7mkU30eK9X+5aiO/Wj5wj5A=",
       "x86_64-linux": "sha256-Bl3xaFAWNj93Vxz6lM1g7mkU30eK9X+5aiO/Wj5wj5A="
     }
   },

Package version did not change.