Fully fix modularity

build.gradle

@@ -157,6 +157,7 @@ sourceSets {
         ext.languageVersion = 16
         ext.modularityExcluded = true // don't add ourselves
     }
+    modularityDummy {}
 }
 
 // Because Mixin aims to support a variety of environments, we have to be able to run with older versions of GSON and Guava that lack official module
@@ -364,7 +365,7 @@ if (JavaVersion.current().isJava8Compatible()) {
 }
 
 task stagingJar(type: ShadowJar) {
-    sourceSets.findAll { !(it.name =~ /example|test/) }.each {
+    sourceSets.findAll { !(it.name =~ /example|test|modularityDummy/) }.each {
         from it.output
     }
     configurations = [project.configurations.stagingJar]

src/modularity/java/module-info.java

@@ -152,4 +152,6 @@
     provides org.spongepowered.tools.obfuscation.service.IObfuscationService
         with org.spongepowered.tools.obfuscation.mcp.ObfuscationServiceMCP,
              org.spongepowered.tools.obfuscation.fg3.ObfuscationServiceFG3;
+
+    uses org.spongepowered.include.com.google.common.base.PatternCompiler;
 }

src/modularityDummy/java/org/spongepowered/include/com/google/common/base/PatternCompiler.java

@@ -0,0 +1,5 @@
+package org.spongepowered.include.com.google.common.base;
+
+// Dummy public class so that the module can declare a uses directive for it
+public interface PatternCompiler {
+}