add minVersion filling support - fix #34

build.gradle

@@ -41,7 +41,7 @@ dependencies {
 //	implementation ('org.benf:cfr:0.136')
 	implementation ('org.jetbrains:intellij-fernflower:1.0.0.2')
 
-	implementation ('net.fabricmc:sponge-mixin:0.7.11.4') {
+	implementation ('net.fabricmc:sponge-mixin:0.7.11.10') {
 		exclude module: 'launchwrapper'
 		exclude module: 'guava'
 	}

src/main/java/net/fabricmc/loom/LoomGradleExtension.java

@@ -29,11 +29,14 @@ import net.fabricmc.loom.providers.MinecraftMappedProvider;
 import net.fabricmc.loom.providers.MinecraftProvider;
 import net.fabricmc.loom.util.LoomDependencyManager;
 import org.gradle.api.Project;
+import org.gradle.api.artifacts.Dependency;
 
+import javax.annotation.Nullable;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Objects;
 
 public class LoomGradleExtension {
 	public String runDir = "run";
@@ -74,6 +77,24 @@ public class LoomGradleExtension {
 		return projectCache;
 	}
 
+	@Nullable
+	public String getMixinVersion() {
+		for (Dependency dependency : project.getConfigurations().getByName("compile").getDependencies()) {
+			if (dependency.getName().equalsIgnoreCase("mixin") && dependency.getGroup().equals("org.spongepowered")) {
+				return dependency.getVersion();
+			}
+
+			if (dependency.getName().equals("sponge-mixin") && dependency.getGroup().equals("net.fabricmc")) {
+				if (Objects.requireNonNull(dependency.getVersion()).split("\\.").length >= 4) {
+					return dependency.getVersion().substring(0, dependency.getVersion().lastIndexOf('.')) + "-SNAPSHOT";
+				}
+				return dependency.getVersion();
+			}
+		}
+
+		return null;
+	}
+
 	public LoomDependencyManager getDependencyManager() {
 		return dependencyManager;
 	}

src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java

@@ -66,7 +66,7 @@ public class LoomDependencyManager {
 		}
 		for(String config : targetConfigs){
 			Configuration configuration = project.getConfigurations().getByName(config);
-			configuration.getDependencies().stream().forEach(dependency -> {
+			configuration.getDependencies().forEach(dependency -> {
 				for(DependencyProvider provider : dependencyProviderList){
 					if(provider.getTargetConfig().equals(config)){
 						DependencyProvider.DependencyInfo info = new DependencyProvider.DependencyInfo(dependency, configuration);

src/main/java/net/fabricmc/loom/util/MixinRefmapHelper.java

@@ -50,7 +50,7 @@ public final class MixinRefmapHelper {
     private MixinRefmapHelper() {
 
     }
-    public static boolean addRefmapName(String filename, File output) {
+    public static boolean addRefmapName(String filename, String mixinVersion, File output) {
         Set<String> mixinFilenames = findMixins(output, true);
 
         if (mixinFilenames.size() > 0) {
@@ -61,7 +61,12 @@ public final class MixinRefmapHelper {
                                 @Override
                                 protected String transform(ZipEntry zipEntry, String input) throws IOException {
                                     JsonObject json = GSON.fromJson(input, JsonObject.class);
-                                    json.addProperty("refmap", filename);
+                                    if (!json.has("refmap")) {
+                                        json.addProperty("refmap", filename);
+                                    }
+                                    if (!json.has("minVersion") && mixinVersion != null) {
+                                        json.addProperty("minVersion", mixinVersion);
+                                    }
                                     return GSON.toJson(json);
                                 }
                             })).toArray(ZipEntryTransformerEntry[]::new)
@@ -82,7 +87,7 @@ public final class MixinRefmapHelper {
                 try {
                     JsonObject json = GSON.fromJson(inputStreamReader, JsonObject.class);
                     if (json != null && json.has("mixins") && json.get("mixins").isJsonArray()) {
-                        if (!onlyWithoutRefmap || !json.has("refmap")) {
+                        if (!onlyWithoutRefmap || !json.has("refmap") || !json.has("minVersion")) {
                             mixinFilename.add(entry.getName());
                         }
                     }

src/main/java/net/fabricmc/loom/util/ModRemapper.java

@@ -31,6 +31,7 @@ import net.fabricmc.tinyremapper.OutputConsumerPath;
 import net.fabricmc.tinyremapper.TinyRemapper;
 import net.fabricmc.tinyremapper.TinyUtils;
 import org.gradle.api.Project;
+import org.gradle.api.artifacts.Dependency;
 
 import java.io.File;
 import java.nio.file.Path;
@@ -100,7 +101,7 @@ public class ModRemapper {
 		}
 
 		if (extension.refmapName != null && extension.refmapName.length() > 0) {
-			if (MixinRefmapHelper.addRefmapName(extension.refmapName, modJarOutput)) {
+			if (MixinRefmapHelper.addRefmapName(extension.refmapName, extension.getMixinVersion(), modJarOutput)) {
 				project.getLogger().debug("Transformed mixin reference maps in output JAR!");
 			}
 		}