build.gradle

apply plugin: 'java'
apply plugin: 'kotlin'

group = pluginGroup
version = pluginVersion

sourceCompatibility = '1.8'
targetCompatibility = '1.8'

configurations {
    embed
    compile.extendsFrom(embed)
}

repositories {
    mavenCentral()
    maven {
        name = 'papermc-repo'
        url = 'https://papermc.io/repo/repository/maven-public/'
    }
    maven {
        name = 'spigotmc-repo'
        url = 'https://hub.spigotmc.org/nexus/content/groups/public/'
    }
    maven {
        name = 'sonatype'
        url = 'https://oss.sonatype.org/content/groups/public/'
    }
}

dependencies {
    compile "com.destroystokyo.paper:paper-api:$spigot_version"
    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
}

import org.apache.tools.ant.filters.ReplaceTokens
sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
    main.java.srcDirs += 'src/main/java'
}
processResources {
    from(sourceSets.main.resources.srcDirs) {
        filter ReplaceTokens, tokens: [version: version]
    }
}
buildscript {
    ext{
        kotlin_version = '1.4.0'
        spigot_version = '1.15.2-R0.1-SNAPSHOT'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

jar {
    from {
        configurations.compile.collect {
            it.isDirectory() ? it : zipTree(it)
        }
    }
}