Add option to disable deprecated POM generation and the warnings together with it (#487)

src/main/java/net/fabricmc/loom/api/LoomGradleExtensionAPI.java

@@ -34,6 +34,7 @@ import org.gradle.api.file.ConfigurableFileCollection;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.ListProperty;
 import org.gradle.api.provider.Property;
+import org.gradle.api.publish.maven.MavenPublication;
 import org.jetbrains.annotations.ApiStatus;
 
 import net.fabricmc.loom.api.decompilers.LoomDecompiler;
@@ -184,4 +185,15 @@ public interface LoomGradleExtensionAPI {
 	 * @return the property controlling the setup of remapped variants
 	 */
 	Property<Boolean> getSetupRemappedVariants();
+
+	/**
+	 * Disables the deprecated POM generation for a publication.
+	 * This is useful if you want to suppress deprecation warnings when you're not using software components.
+	 *
+	 * <p>Experimental API: Will be removed in Loom 0.12 together with the deprecated POM generation functionality.
+	 *
+	 * @param publication the maven publication
+	 */
+	@ApiStatus.Experimental
+	void disableDeprecatedPomGeneration(MavenPublication publication);
 }

src/main/java/net/fabricmc/loom/configuration/MavenPublication.java

@@ -25,10 +25,12 @@
 package net.fabricmc.loom.configuration;
 
 import java.lang.reflect.Method;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.WeakHashMap;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import groovy.util.Node;
@@ -49,6 +51,7 @@ public final class MavenPublication {
 			JavaPlugin.API_ELEMENTS_CONFIGURATION_NAME, "compile",
 			JavaPlugin.RUNTIME_ELEMENTS_CONFIGURATION_NAME, "runtime"
 	);
+	private static final Set<Publication> EXCLUDED_PUBLICATIONS = Collections.newSetFromMap(new WeakHashMap<>());
 
 	private MavenPublication() {
 	}
@@ -88,7 +91,7 @@ public final class MavenPublication {
 					continue;
 				}
 
-				if (hasSoftwareComponent(publication)) {
+				if (hasSoftwareComponent(publication) || EXCLUDED_PUBLICATIONS.contains(publication)) {
 					continue;
 				} else if (!reportedDeprecation.get()) {
 					var deprecationHelper = LoomGradleExtension.get(project).getDeprecationHelper();
@@ -142,4 +145,8 @@ public final class MavenPublication {
 			}
 		});
 	}
+
+	public static void excludePublication(Publication publication) {
+		EXCLUDED_PUBLICATIONS.add(publication);
+	}
 }

src/main/java/net/fabricmc/loom/extension/LoomGradleExtensionApiImpl.java

@@ -32,6 +32,7 @@ import org.gradle.api.file.ConfigurableFileCollection;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.ListProperty;
 import org.gradle.api.provider.Property;
+import org.gradle.api.publish.maven.MavenPublication;
 
 import net.fabricmc.loom.api.LoomGradleExtensionAPI;
 import net.fabricmc.loom.api.MixinApExtensionAPI;
@@ -152,6 +153,11 @@ public abstract class LoomGradleExtensionApiImpl implements LoomGradleExtensionA
 
 	protected abstract LoomFiles getFiles();
 
+	@Override
+	public void disableDeprecatedPomGeneration(MavenPublication publication) {
+		net.fabricmc.loom.configuration.MavenPublication.excludePublication(publication);
+	}
+
 	// This is here to ensure that LoomGradleExtensionApiImpl compiles without any unimplemented methods
 	private final class EnsureCompile extends LoomGradleExtensionApiImpl {
 		private EnsureCompile() {

src/main/java/net/fabricmc/loom/extension/MinecraftGradleExtension.java

@@ -31,6 +31,7 @@ import org.gradle.api.file.ConfigurableFileCollection;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.ListProperty;
 import org.gradle.api.provider.Property;
+import org.gradle.api.publish.maven.MavenPublication;
 
 import net.fabricmc.loom.api.LoomGradleExtensionAPI;
 import net.fabricmc.loom.api.MixinApExtensionAPI;
@@ -137,4 +138,10 @@ public class MinecraftGradleExtension implements LoomGradleExtensionAPI {
 		reportDeprecation();
 		return parent.getSetupRemappedVariants();
 	}
+
+	@Override
+	public void disableDeprecatedPomGeneration(MavenPublication publication) {
+		reportDeprecation();
+		parent.disableDeprecatedPomGeneration(publication);
+	}
 }