BaseBandRewrite/Loader/build.gradle

import proguard.gradle.ProGuardTask

buildscript {
    repositories {
        maven { url = 'https://maven.minecraftforge.net' }
        maven { url = 'https://repo.spongepowered.org/repository/maven-public' }
        mavenCentral()
    }
    dependencies {
        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '5.1.1', changing: true
        classpath "org.spongepowered:mixingradle:0.7.+"
        classpath 'com.guardsquare:proguard-gradle:7.1.0'
    }
}

apply plugin: 'net.minecraftforge.gradle'
apply plugin: 'org.spongepowered.mixin'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'java'

group = project.modGroup
version = project.modVersion

sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8'

tasks.withType(JavaCompile) {
    configure(options) {
        options.compilerArgs.add("-XDignore.symbol.file=true")
        options.encoding = 'utf-8'
    }
}

minecraft {
    mappings channel: 'stable', version: '39-1.12'

    runs {
        client {
            workingDirectory project.file('run')

            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
            property 'forge.logging.console.level', 'debug'
            jvmArgs = ["-Dfml.coreMods.load=de.com.baseband.launcher.Tweaker", "-Xmx700M"]
            args = ["-tweakClass", "de.com.baseband.launcher.Tweaker"]
        }
    }
}

repositories {
    maven {
        name = 'spongepowered-repo'
        url = 'https://repo.spongepowered.org/maven'
    }

    maven {
        name = "jitpack.io"
        url = "https://jitpack.io"
    }

    mavenCentral()
}

configurations {
    jarLibs
}

dependencies {
    minecraft 'net.minecraftforge:forge:1.12.2-14.23.5.2860'

    jarLibs('org.spongepowered:mixin:0.7.11-SNAPSHOT') {
        exclude module: 'launchwrapper'
        exclude module: 'guava'
        exclude module: 'gson'
        exclude module: 'commons-io'
        exclude module: 'log4j-core'
    }

    jarLibs(fileTree(dir: "lib", include: "*.jar"));

    //jarLibs(group: 'com.github.oshi', name: 'oshi-core', version: '1.+');

    annotationProcessor('org.spongepowered:mixin:0.8.5:processor') {
        exclude module: 'gson'
    }

    implementation configurations.jarLibs
}

processResources {
    duplicatesStrategy = DuplicatesStrategy.EXCLUDE

    inputs.property 'version', project.version
    inputs.property 'mcversion', '1.12.2'

    from(sourceSets.main.resources.srcDirs) {
        include 'mcmod.info'
        expand 'version': project.version, 'mcversion': '1.12.2'
    }

    from(sourceSets.main.resources.srcDirs) { exclude 'mcmod.info' }

    rename '(.+_at.cfg)', 'META-INF/$1'
}

mixin {
    defaultObfuscationEnv 'searge'
    add sourceSets.main, 'mixins.client.refmap.json'
}

jar {
    duplicatesStrategy = DuplicatesStrategy.EXCLUDE

    manifest {
        attributes(
                'TweakClass': 'de.com.baseband.launcher.Tweaker',
                'TweakOrder': 0,
                'FMLCorePluginContainsFMLMod': 'true',
                'ForceLoadAsMod': 'true'
        )
    }


    from {
        configurations.jarLibs.collect {
            it.isDirectory() ? it : zipTree(it)
        }
    } {
        exclude("mcmod.info")
    }

    archiveFileName = 'BaseBand-Loader.jar'
}

def proguardBuildDir = "${buildDir}/proguard"
def proguardDir = "proguard"

tasks.register('proguard', ProGuardTask) {

    dependsOn jar

    configuration "${proguardDir}/proguard.cfg"
    injars jar.archiveFile
    outjars "${proguardBuildDir}/BaseBand-Loader.jar"
    libraryjars "${proguardDir}/rt.jar"
    libraryjars configurations.jarLibs
    dump "${proguardBuildDir}/dump-Loader.txt"
    printmapping "${proguardBuildDir}/mapping-Loader.txt"
    printconfiguration "${proguardBuildDir}/configuration.txt"
}