compileDebugSwift -> linkDebug -> assembleDebug -> assemble -> build [dir=back]
  check -> build [dir=back]
  compileReleaseSwift -> linkRelease -> assembleRelease [dir=back]
  clean

  // Ensure ordering
  compileDebugSwift -> compileReleaseSwift -> clean [style=invis]
  {rank=same compileDebugSwift compileReleaseSwift clean}

  assemble -> empty1 -> empty2 -> check [style=invis]
  {rank=same assemble check empty1 empty2}

  compileDebugSwift -> createDebug -> assembleDebug -> assemble -> build [dir=back]
  check -> build [dir=back]
  compileReleaseSwift -> createRelease -> assembleRelease [dir=back]
  clean

  // Ensure ordering
  compileDebugSwift -> compileReleaseSwift -> clean [style=invis]
  {rank=same compileDebugSwift compileReleaseSwift clean}

  assemble -> empty1 -> empty2 -> check [style=invis]
  {rank=same assemble check empty1 empty2}

  linkDebug -> assembleDebug [dir=back]
  check -> build [dir=back]
  compileReleaseSwift -> linkRelease -> assembleRelease [dir=back]
  clean

  // Ensure ordering
  compileDebugSwift -> compileReleaseSwift -> clean [style=invis]
  {rank=same compileDebugSwift compileReleaseSwift clean}

  check -> assemble -> assembleDebug -> assembleRelease [style=invis]

        when:
        project.pluginManager.apply(SwiftLibraryPlugin)
        project.evaluate()

        then:
        project.tasks.withType(SwiftCompile)*.name == ['compileDebugSwift', 'compileReleaseSwift']
        project.tasks.withType(CreateStaticLibrary).empty

        and:
        def compileDebug = project.tasks.compileDebugSwift
        compileDebug instanceof SwiftCompile

        when:
        project.pluginManager.apply(SwiftApplicationPlugin)
        project.evaluate()

        then:
        project.tasks.withType(SwiftCompile)*.name == ['compileDebugSwift', 'compileReleaseSwift']

        and:
        def compileDebug = project.tasks.compileDebugSwift
        compileDebug instanceof SwiftCompile
        compileDebug.source.files == [src] as Set

            .withConfiguration(DefaultXcodeProject.BUILD_RELEASE)
            .succeeds()

        then:
        resultRelease.assertTasksExecuted(':compileReleaseSwift', ':createRelease', ':_xcode___App_Release')
        resultRelease.assertTasksNotSkipped(':compileReleaseSwift', ':createRelease', ':_xcode___App_Release')
        releaseBinary.assertExists()
    }

    @ToBeFixedForConfigurationCache

    protected List<String> getAssembleDebugTasks() {
        return [":compileDebugSwift", ":linkDebug", ":installDebug"]
    }

    @Override
    protected List<String> getAssembleReleaseTasks() {
        return [":compileReleaseSwift", ":linkRelease", ":stripSymbolsRelease", ":extractSymbolsRelease", ":installRelease"]
    }

    @Override
    protected List<String> getLibDebugTasks() {
        return [":lib:compileDebugSwift", ":lib:linkDebug"]

        staticLibrary('build/lib/main/debug/Foo').assertExists()

        when:
        succeeds('assembleRelease')

        then:
        result.assertTasksExecuted(':compileReleaseSwift', ':createRelease', ':assembleRelease')
        staticLibrary('build/lib/main/release/Foo').assertExists()
    }

    def "can use link file as task dependency"() {
        given:

    protected List<String> getAssembleDebugTasks() {
        return [":compileDebugSwift", ":linkDebug"]
    }

    @Override
    protected List<String> getAssembleReleaseTasks() {
        return [":compileReleaseSwift", ":linkRelease", ":stripSymbolsRelease", ":extractSymbolsRelease"]
    }

    @Override
    protected List<String> getLibDebugTasks() {
        return [":lib:compileDebugSwift", ":lib:linkDebug"]
    }

.Swift Library Plugin variant-dependent task graph
image::swift-library-variant-task-graph.png[]
NOTE: Depending on the linkage property

`compile__Variant__Swift` (e.g. `compileDebugSwift` and `compileReleaseSwift`)  - link:{groovyDslPath}/org.gradle.language.swift.tasks.SwiftCompile.html[SwiftCompile]::
Depends on: All tasks that contribute source files to the compilation
::
Compiles Swift source files using the selected compiler.