The legacy `maven` plugin was removed in Gradle 7. Please use the `maven-publish` plugin in instead - maven

Question

I´m trying to run a project using gradle but I´m getting the following error.
FAILURE: Build failed with an exception.
* Where:
Build file 'D:\ISEP\ODSOFT\Projects\odsoft-21-22-nmb-g311\odsoft-21-22-nmb-g311\project\build.gradle' line: 4
* What went wrong:
An exception occurred applying plugin request [id: 'fr.putnami.gwt', version: '0.4.0']
> Failed to apply plugin class 'org.gradle.api.plugins.MavenPlugin'.
> The legacy `maven` plugin was removed in Gradle 7. Please use the `maven-publish` plugin instead. See https://docs.gradle.org/7.2/userguide/publishing_maven.html#publishing_maven for details
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
The command I´m using to run project is gradle gwtRun.
I leave below my gradle bulid file
plugins {
id "fr.putnami.gwt" version "0.4.0"
id "maven-publish"
}
apply plugin: 'war'
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'jacoco'
apply plugin: 'maven-publish'
//Java version compatibility to use when compiling Java source.
sourceCompatibility = 1.8
//Java version to generate classes for.
targetCompatibility = 1.8
//Script Version
version = '1.0'
repositories {
mavenCentral()
}
dependencies {
//testCompile 'junit:junit:4.12'
//testCompile group: 'junit', name: 'junit', version: '4.12'
testImplementation group: 'junit', name: 'junit', version: '4.12'
testImplementation 'org.easymock:easymock:2.5.2'
testImplementation 'com.google.gwt:gwt-dev:2.8.1'
implementation 'net.sourceforge.plantuml:plantuml:8001'
//compile 'net.sourceforge.plantuml:plantuml:8001'
}
javadoc {
options.addStringOption("sourcepath", "")
}
// If we woant to use the default ant build inside gradle
// ant.importBuild "build.xml"
putnami{
module 'pt.isep.cms.Showcase'
//module 'com.google.gwt.sample.contacts.Contacts'
/** add gwt nature on eclipse project. require apply plugin: 'eclipse' to work. default : false*/
googlePluginEclipse = true
gwtVersion='2.8.1'
compile {
sourceLevel = '1.8'
}
jetty {
/** enable debugging. */
debugJava = true
/** debug port to listen. */
debugPort = 8000
/** wait for debugger attachment. */
debugSuspend = false
}
}
// Jacoco
jacocoTestReport {
reports {
xml.enabled false
csv.enabled false
}
}
// This task generates the coverage report for the integration tests.
// Notice that it only includes data about the server code sice Jaccoco is not able to get data about cliente code that is transpiled to javascript
task jacocoIntegrationReport(type: org.gradle.testing.jacoco.tasks.JacocoReport) {
sourceSets sourceSets.main
executionData = files("${buildDir}/jacoco/integrationTest.exec")
reports {
html.enabled = true
xml.enabled = false
csv.enabled = false
}
}
// Integration Tests
task integrationTest(type: Test) {
filter {
//all GWT unit tests, by naming convention
includeTestsMatching "*GWTTest*"
}
jacoco {
append = true
enabled = true
//classDumpFile = file("${buildDir}/jacoco/classpathdumps")
excludes = ["com/steadystate/**"]
}
// These Properties are required to run gwt integration tests
systemProperties['gwt.args'] = "-devMode -logLevel WARN -war www-test"
}
tasks.withType(Test) {
reports.html.destination = file("${reporting.baseDir}/${name}")
}
// Unit Tests
test {
filter {
//all JRE unit tests, by naming convention
includeTestsMatching "*JRETest*"
}
jacoco {
append = true
enabled = true
//classDumpFile = file("${buildDir}/jacoco/classpathdumps")
}
}
From what I understood the plugin maven was removed in the version 7 of gradle. Is this sentence correct? Or is the putnami plugin that was removed?
What should I do to make it to work?

Answer 1

The plugin fr.putnami.gwt applies the maven plugin internally:
https://github.com/Putnami/putnami-gradle-plugin/blob/master/src/main/java/fr/putnami/gwt/gradle/PwtLibPlugin.java#L47
Therefore, fr.putnami.gwt is not compatible with Gradle 7.
As stated in the README in the repo:
A fork of it that is still supported and has a newer release is available at https://github.com/esoco/gwt-gradle-plugin. Please use the new version if you need GWT support for Gradle.
So, then the following should work:
plugins {
id "de.esoco.gwt" version "1.1.1"
}