│   │   │   └── kotlin
│   │   │       ├── myproject.java-conventions.gradle.kts
│   │   │       └── myproject.library-conventions.gradle.kts
...
----
=====
[.multi-language-sample]
=====
.Build logic layout
[source, groovy]
----
├── buildSrc
│   ├── build.gradle
│   ├── settings.gradle
│   ├── src
│   │   ├── main
│   │   │   └── groovy
│   │   │       ├── myproject.java-conventions.gradle

// tag::plugins[]
plugins {
    id("myproject.java-conventions")
    // myproject.greeting is implemented in the buildSrc project that has myproject.java-conventions applied as well
    id("myproject.greeting")
    id("application")
}
// end::plugins[]

dependencies {
    implementation(project(":utilities"))
}

application {
    mainClass = "org.gradle.sample.app.Main"

        projectName("api/myproject") == "api-myproject"
        projectName("api/myproject/myproject-foo") == "api-myproject-foo"
        projectName("api/myproject/myproject-foo/app") == "api-myproject-foo-app"

        projectName("impl") == "impl"
        projectName("impl/myproject") == "impl-myproject"
        projectName("impl/myproject/myproject-foo") == "impl-myproject-foo"

// tag::plugins[]
plugins {
    id 'myproject.java-conventions'
    // myproject.greeting is implemented in the buildSrc project that has myproject.java-conventions applied as well
    id 'myproject.greeting'
    id 'application'
}
// end::plugins[]

dependencies {
    implementation project(':utilities')
}

application {
    mainClass = 'org.gradle.sample.app.Main'

Concretely, we add a _convention plugin_ in `buildSrc` to share the integration test setup between multiple subprojects:

====
include::sample[dir="kotlin",files="buildSrc/src/main/kotlin/myproject.java-conventions.gradle.kts[]"]
include::sample[dir="groovy",files="buildSrc/src/main/groovy/myproject.java-conventions.gradle[]"]
====

And apply it in an application project:

====
include::sample[dir="kotlin",files="application/build.gradle.kts[]"]

└── settings.gradle.kts
----
<1> Create the `myproject.java-conventions` convention plugin.
<2> Applies the `myproject.java-conventions` convention plugin.
=====
[.multi-language-sample]
=====
[source, groovy]
----
.
├── buildSrc
│   ├── src
│   │   └──main
│   │      └──groovy
│   │         └──myproject.java-conventions.gradle  // <1>
│   └── build.gradle
├── api
│   ├── src

plugins {
    id 'myproject.java-conventions'

plugins {
    id 'myproject.xctest-conventions'

plugins {
    id("myproject.xctest-conventions")

plugins {
    id 'myproject.groovy-conventions'