linux_xanmod: customize update commit body (#442579)

pkgs/os-specific/linux/kernel/update-xanmod.sh

@@ -47,7 +47,7 @@ while IFS= read -r url; do
     fi
 done < <(echo "$RELEASE_URLS" | jq -r)
 
-echo "Updating Xanmod \"$VARIANT\" from $OLD_VERSION to $NEW_VERSION ($SUFFIX)"
+>&2 echo "Updating Xanmod \"$VARIANT\" from $OLD_VERSION to $NEW_VERSION ($SUFFIX)"
 
 URL="https://gitlab.com/api/v4/projects/xanmod%2Flinux/repository/archive.tar.gz?sha=$NEW_VERSION-$SUFFIX"
 HASH="$(nix-prefetch fetchzip --quiet --url "$URL")"
@@ -87,3 +87,12 @@ update_variant() {
 }
 
 update_variant "$FILE_PATH" "$VARIANT" "$NEW_VERSION" "$HASH" "$SUFFIX"
+
+# Customize commit
+# https://github.com/NixOS/nixpkgs/blob/master/pkgs/README.md#supported-features
+COMMIT_BODY="
+- Changelog: https://dl.xanmod.org/changelog/${NEW_VERSION%.*}/ChangeLog-$NEW_VERSION-xanmod1.gz
+- Diff: https://gitlab.com/xanmod/linux/-/compare/$OLD_VERSION-xanmod1..$NEW_VERSION-xanmod1?from_project_id=51590166
+"
+
+jq -n --arg commitBody "$COMMIT_BODY" '[$ARGS.named]'

pkgs/os-specific/linux/kernel/xanmod-kernels.nix

@@ -74,10 +74,16 @@ let
           RCU_EXP_KTHREAD = yes;
         };
 
-        extraPassthru.updateScript = [
-          ./update-xanmod.sh
-          variant
-        ];
+        extraPassthru.updateScript = {
+          command = [
+            ./update-xanmod.sh
+            variant
+          ];
+          supportedFeatures = [
+            "commit"
+          ];
+        };
+
         inherit isLTS;
 
         extraMeta = {