Add back dummy DepLoader with fixed manifest

build.gradle

@@ -3,3 +3,12 @@
 plugins {
     id 'com.gtnewhorizons.gtnhconvention'
 }
+
+jar {
+    manifest {
+        attributes += [
+            "FMLCorePluginContainsFMLMod": true,
+            "FMLCorePlugin": "thaumcraft.codechicken.core.launch.DepLoader"
+        ]
+    }
+}

src/main/java/thaumcraft/codechicken/core/launch/DepLoader.java

@@ -0,0 +1,41 @@
+package thaumcraft.codechicken.core.launch;
+
+import cpw.mods.fml.relauncher.IFMLCallHook;
+import cpw.mods.fml.relauncher.IFMLLoadingPlugin;
+import java.util.Map;
+
+@IFMLLoadingPlugin.SortingIndex(-100)
+@IFMLLoadingPlugin.MCVersion("1.7.10")
+public class DepLoader implements IFMLLoadingPlugin, IFMLCallHook {
+
+    @Override
+    public String[] getASMTransformerClass() {
+        return null;
+    }
+
+    @Override
+    public String getModContainerClass() {
+        return null;
+    }
+
+    @Override
+    public String getSetupClass() {
+        return null;
+    }
+
+    @Override
+    public void injectData(Map<String, Object> data) {
+
+    }
+
+    @Override
+    public String getAccessTransformerClass() {
+        return null;
+    }
+
+    @Override
+    public Void call() throws Exception {
+        return null;
+    }
+
+}