Create/build.gradle

buildscript {
    repositories {
        maven { url = 'https://files.minecraftforge.net/maven' }
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '3.+', changing: true
    }
}
apply plugin: 'net.minecraftforge.gradle'
// Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
apply plugin: 'eclipse'
apply plugin: 'maven-publish'

version = '0.0.5'
group = 'com.simibubi.create'
archivesBaseName = 'create'

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

minecraft {
    mappings channel: 'snapshot', version: '20190806-1.14.3'
    
    runs {
        createDev {
            workingDirectory project.file('run')
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
            property 'forge.logging.console.level', 'debug'
            mods {
                create {
                    source sourceSets.main
                }
            }
        }
		
		createSimi {
            workingDirectory project.file('run')
            property 'forge.logging.console.level', 'info'
            mods {
                create {
                    source sourceSets.main
                }
            }
        }

        createServer {
            workingDirectory project.file('run')
            property 'forge.logging.console.level', 'info'
            mods {
                create {
                    source sourceSets.main
                }
            }
        }

        createData {
            workingDirectory project.file('run')
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
            property 'forge.logging.console.level', 'debug'
            args '--mod', 'create', '--all', '--output', file('src/generated/resources/')
            mods {
                create {
                    source sourceSets.main
                }
            }
        }
    }
}

dependencies {
    minecraft 'net.minecraftforge:forge:1.14.4-28.0.45'
}

jar {
    manifest {
        attributes([
            "Specification-Title": "create",
            "Specification-Vendor": "simibubi",
            "Specification-Version": "1", // We are version 1 of ourselves
            "Implementation-Title": project.name,
            "Implementation-Version": "${version}",
            "Implementation-Vendor" :"simibubi",
            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
        ])
    }
}

// Example configuration to allow publishing using the maven-publish task
// we define a custom artifact that is sourced from the reobfJar output task
// and then declare that to be published
// Note you'll need to add a repository here
def reobfFile = file("$buildDir/reobfJar/output.jar")
def reobfArtifact = artifacts.add('default', reobfFile) {
    type 'jar'
    builtBy 'reobfJar'
}
publishing {
    publications {
        mavenJava(MavenPublication) {
            artifact reobfArtifact
        }
    }
    repositories {
        maven {
            url "file:///${project.projectDir}/mcmodsrepo"
        }
    }
}