Fix network proxied environments causing Mavenizer to fail, fixes #1009

Author: Jonathing

settings.gradle

@@ -20,7 +20,7 @@ gradle.beforeProject { Project project ->
 
 //@formatter:off
 dependencyResolutionManagement.versionCatalogs.register('libs') {
-    version 'gradleutils', '3.3.38'
+    version 'gradleutils', '3.3.39'
 
     plugin 'licenser',       'net.minecraftforge.licenser'    version '1.2.0' // https://plugins.gradle.org/plugin/net.minecraftforge.licenser
     plugin 'gradleutils',    'net.minecraftforge.gradleutils' versionRef 'gradleutils'

src/main/java/net/minecraftforge/gradle/internal/SlimeLauncherExec.java

@@ -16,6 +16,7 @@
 import org.gradle.api.file.ConfigurableFileCollection;
 import org.gradle.api.file.DirectoryProperty;
 import org.gradle.api.file.RegularFileProperty;
+import org.gradle.api.provider.MapProperty;
 import org.gradle.api.provider.Property;
 import org.gradle.api.provider.Provider;
 import org.gradle.api.reflect.HasPublicType;
@@ -124,6 +125,8 @@ static TaskProvider<SlimeLauncherExec> register(Project project, SourceSet sourc
 
     protected abstract @Input @Optional Property<Boolean> getClient();
 
+    protected abstract @Internal MapProperty<String, String> getForkProperties();
+
     private final ForgeGradleProblems problems = this.getObjectFactory().newInstance(ForgeGradleProblems.class);
 
     @Inject
@@ -136,6 +139,7 @@ public SlimeLauncherExec() {
             this.getMainClass().set(tool.getMainClass());
         this.getJavaLauncher().set(Util.launcherFor(getProject(),tool.getJavaVersion()));
         this.getModularity().getInferModulePath().set(false);
+        this.getForkProperties().set(Util.getForkProperties(getProviderFactory()));
     }
 
     @Override