[FIXED] Gradle 7 and jitpack.io runs into error during publish

Issue

When I upgrade in an Android project to Gradle 7.0 and want to publish aar library in jitpack.io I run into

Script '/script/maven-plugin.gradle' line: 2

* What went wrong:
A problem occurred evaluating script.
> Failed to apply plugin 'com.github.dcendents.android-maven'.
   > Could not create plugin of type 'AndroidMavenPlugin'.
      > Could not generate a decorated class for type AndroidMavenPlugin.
         > org/gradle/api/publication/maven/internal/MavenPomMetaInfoProvider 

See full log https://jitpack.io/com/github/appdevnext/moka/0.7.1/build.log

Solution

The maven plugin has been eliminated in Gradle 7.0, please use the maven-publish plugin instead.

I made it work with

plugins {
    id 'maven-publish'
    ...
}

task androidSourcesJar(type: Jar) {
    classifier 'sources'
    from android.sourceSets.main.java.srcDirs 
}

project.afterEvaluate {
    publishing {
        publications {
            release(MavenPublication) {
                from components.release
                artifact androidSourcesJar // optional sources
            }
        }
    }
}

and you need an own jitpack.yml

jdk:
  - openjdk11
install:
  - ./gradlew build :lib:publishToMavenLocal

Here you see complete pull request https://github.com/AppDevNext/Moka/pull/77 now it works https://jitpack.io/#AppDevNext/moka/1.0

Answered By - hannes ach
Answer Checked By - Pedro (JavaFixing Volunteer)