Downgrade pre-1.12 back to Mixin 0.7.10

src/main/java/com/replaymod/core/ReplayModMixinConfigPlugin.java

@@ -2,7 +2,6 @@ package com.replaymod.core;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.objectweb.asm.tree.ClassNode;
 import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
 import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
 
@@ -16,6 +15,12 @@ import java.io.InputStream;
 //$$ import net.minecraft.launchwrapper.Launch;
 //#endif
 
+//#if MC>=11200
+import org.objectweb.asm.tree.ClassNode;
+//#else
+//$$ import org.spongepowered.asm.lib.tree.ClassNode;
+//#endif
+
 public class ReplayModMixinConfigPlugin implements IMixinConfigPlugin {
     static boolean hasClass(String name) throws IOException {
         //#if MC>=11400

versions/common.gradle

@@ -248,9 +248,11 @@ dependencies {
     }
 
     if (!FABRIC) {
-        annotationProcessor 'org.spongepowered:mixin:0.8'
-        compileOnly 'org.spongepowered:mixin:0.8'
-        shade('org.spongepowered:mixin:0.8') {
+        // Mixin 0.8 is no longer compatible with MC 1.11.2 or older
+        def mixinVersion = mcVersion >= 11200 ? '0.8' : '0.7.10-SNAPSHOT'
+        annotationProcessor "org.spongepowered:mixin:$mixinVersion"
+        compileOnly "org.spongepowered:mixin:$mixinVersion"
+        shade("org.spongepowered:mixin:$mixinVersion") {
             transitive = false // deps should all be bundled with MC
         }