UDK

Universal Development Kit to develops with any version of Minecraft with any IDE

It use Repacker to get a repacked version of Minecraft

Documentation

Documentation

udk.version use same patterns as Repacker

Gradle

buildscript {
    repositories {
        maven {
            url 'http://62.4.29.69/maven'
        }
    }
    dependencies {
        classpath 'com.fox2code:udk:1.4.0'
    }
}

apply plugin: 'udk.vanilla'

udk {
    version = "1.17.1"
}

Note: you can use udk.library if you only want the minecraft libraries

Disclaimer the version 1.4.0 need Gradle 7.1 or higher if you use a version lower than 1.4.0 you can use Gradle 7.0 or lower

You need java-16 for 1.17+, if you are using an older minecraft version and want to use an older JDK you will need to add these lines

compileJava {
    sourceCompatibility = targetCompatibility = 1.8
}