include "project1", "project2", "project3", "project4"

                from components.java
            }
        }
    }
}

project(":project1") {
    version = "1.0"
    dependencies {
        api project(":project2")
        api project(":project3")
    }
}
project(":project2") {
    version = "2.0"
    dependencies {
        api project(":project3")
    }
}

$append
        """
    }

  session --> build_tree
  
  build1["root build"]
  build_tree --> build1
  
  project1["root project"]
  build1 --> project1
  
  project2["project"]
  build1 --> project2
  
  build2["included build"]
  build_tree --> build2
  
  project3["root project"]
  build2 --> project3
  
  project4["project"]
  build2 --> project4

```

### Build process state

project project1 is external to this build
project project2 is external to this build
project project3 is external to this build
/repo/org.example/project1/1.0/project1-1.0.jar
/repo/org.example/project2/1.0/project2-1.0.jar

        project3.ivy.expectGet()
        project2.ivy.expectGet()
        project2.jar.expectGet()

        when:
        run 'retrieve'

        then:
        file('libs').assertHasDescendants("projectA-1.2.jar")

        when:
        server.resetExpectations()
        directoryList.allowGet()
        project3.ivy.expectHead()
        project2.ivy.expectHead()
        project2.jar.expectHead()

        and:

project project1 is INTERNAL to this build
project project2 is INTERNAL to this build
project project3 is external to this build
/project1/build/classes/java/main
/project2/build/classes/java/main

rootProject.name = "standard-layouts"
// tag::hierarchical-layout[]
include("project1", "project2:child1", "project3:child1")

rootProject.name = 'standard-layouts'
// tag::hierarchical-layout[]
include 'project1', 'project2:child1', 'project3:child1'

        // load the child project, which inherits from p0...
        MavenProject project0 = getProjectWithDependencies(pom0);
        MavenProject project1 = getProjectWithDependencies(pom1);

        assertNotNull(project1.getParent(), "Parent is null");
        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Map map = project1.getArtifactMap();

        assertNotNull(map, "No artifacts");

rootProject.name = 'customizing-resolution-conditional-substitution-rule'
ext.projectNames = ["project1", "project2", "project3"]
include 'consumer'

projectNames.each { name ->
    if (isIncluded(name)) {
        println "project $name is INTERNAL to this build"
        include name
    } else {
        println "project $name is external to this build"
    }
}

def isIncluded(String projectName) {