From b27eeecfdfc066f126b57752f542e98ec3d665db Mon Sep 17 00:00:00 2001
From: Juuz <6596629+Juuxel@users.noreply.github.com>
Date: Thu, 16 Feb 2023 22:18:09 +0200
Subject: [PATCH] AccessWidenerUtils: Allow jars with no mod metadata

---
 .../loom/configuration/mods/AccessWidenerUtils.java       | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java b/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
index 915404c1..e46b7db4 100644
--- a/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
+++ b/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
@@ -57,7 +57,13 @@ public class AccessWidenerUtils {
 	}
 
 	public static AccessWidenerData readAccessWidenerData(Path inputJar) throws IOException {
-		final FabricModJson fabricModJson = FabricModJsonFactory.createFromZip(inputJar);
+		final FabricModJson fabricModJson = FabricModJsonFactory.createFromZipNullable(inputJar);
+
+		// ARCH: Having no mod metadata is just fine.
+		if (fabricModJson == null) {
+			return null;
+		}
+
 		final List<String> classTweakers = List.copyOf(fabricModJson.getClassTweakers().keySet());
 
 		if (classTweakers.isEmpty()) {