Fix reporting configuration problems with configuration cache (#3596)

Sometimes we need to report warnings during the configuration phase.
For example, when Androidx Compose Compiler is used with
non-JVM targets (e.g. iOS/js), we want to warn users
that using non-JB compiler with non-JVM targets is not supported.

The default way of reporting warnings in Gradle is using a logger.
For example we could write something like:
```
abstract class ComposePlugin : Plugin<Project> {
    override fun apply(project: Project) {
          if (project.hasNonJvmTargets() && project.usesNonJBComposeCompiler()) {
               project.logger.warn("...")
          }
    }
}
```

This approach has a few issues:
1. When the Configuration Cache is enabled, project's configuration might
get skipped altogether, and the warning won't be printed.
2. If a project contains multiple Gradle modules (subprojects),
the warning might be printed multiple times. That might be OK
for some warnings. But repeating exactly the same warning
10s or 100s is unnecessary.

The only way to share the state between Gradle modules,
while preserving compatibility with the Configuration Cache,
is to define Gradle Build Service.

In 1.5.0 we used Gradle Build Service mechanism for both warnings.
However, I did not know that:
* only the service's parameters are persisted in the Configuration Cache.
The service itself is not persisted.
* if a service instance is materialized during the configuration
phase, then all changes made to its parameters will not be
visible to that particular instance (but they will be visible to the
next instance).

So the only way to report diagnostics with configuration cache without
repetition is to define a service that is not materialized
during the configuration phase (i.e. serviceProvider.get() is not called),
add to add warnings to a set property of the service.
This change implements that.


Resolves #3595

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/ComposeCompilerKotlinSupportPlugin.kt

@@ -7,18 +7,14 @@ package org.jetbrains.compose
 
 import org.gradle.api.Project
 import org.gradle.api.provider.Provider
-import org.gradle.build.event.BuildEventsListenerRegistry
 import org.jetbrains.compose.internal.ComposeCompilerArtifactProvider
 import org.jetbrains.compose.internal.mppExtOrNull
+import org.jetbrains.compose.internal.service.ConfigurationProblemReporterService
 import org.jetbrains.compose.internal.webExt
 import org.jetbrains.kotlin.gradle.plugin.*
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTarget
-import javax.inject.Inject
 
-@Suppress("UnstableApiUsage")
+class ComposeCompilerKotlinSupportPlugin : KotlinCompilerPluginSupportPlugin {
-class ComposeCompilerKotlinSupportPlugin @Inject constructor(
-    @Suppress("UnstableApiUsage") private val buildEventsListenerRegistry: BuildEventsListenerRegistry
-) : KotlinCompilerPluginSupportPlugin {
     private lateinit var composeCompilerArtifactProvider: ComposeCompilerArtifactProvider
 
     override fun apply(target: Project) {
@@ -35,7 +31,7 @@ class ComposeCompilerKotlinSupportPlugin @Inject constructor(
         }
     }
 
-    private fun collectUnsupportedCompilerPluginUsages(target: Project) {
+    private fun collectUnsupportedCompilerPluginUsages(project: Project) {
         fun Project.hasNonJvmTargets(): Boolean {
             val nonJvmTargets = setOf(KotlinPlatformType.native, KotlinPlatformType.js, KotlinPlatformType.wasm)
             return mppExtOrNull?.targets?.any {
@@ -47,10 +43,11 @@ class ComposeCompilerKotlinSupportPlugin @Inject constructor(
             return !groupId.startsWith("org.jetbrains.compose.compiler")
         }
 
-        ComposeMultiplatformBuildService.getInstance(target).unsupportedCompilerPlugins.add(
+        ConfigurationProblemReporterService.registerUnsupportedPluginProvider(
-            target.provider {
+            project,
+            project.provider {
                 composeCompilerArtifactProvider.compilerArtifact.takeIf {
-                    target.hasNonJvmTargets() && it.isNonJBComposeCompiler()
+                    project.hasNonJvmTargets() && it.isNonJBComposeCompiler()
                 }
             }
         )

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/ComposeMultiplatformBuildService.kt

@@ -1,119 +0,0 @@
-package org.jetbrains.compose
-
-import org.gradle.api.Project
-import org.gradle.api.logging.Logging
-import org.gradle.api.provider.MapProperty
-import org.gradle.api.provider.Provider
-import org.gradle.api.provider.SetProperty
-import org.gradle.api.services.BuildService
-import org.gradle.api.services.BuildServiceParameters
-import org.gradle.tooling.events.FinishEvent
-import org.gradle.tooling.events.OperationCompletionListener
-import org.jetbrains.compose.experimental.internal.SUPPORTED_NATIVE_CACHE_KIND_PROPERTIES
-import org.jetbrains.compose.internal.utils.BuildEventsListenerRegistryProvider
-import org.jetbrains.compose.internal.utils.loadProperties
-import org.jetbrains.compose.internal.utils.localPropertiesFile
-import org.jetbrains.kotlin.gradle.plugin.SubpluginArtifact
-
-// The service implements OperationCompletionListener just so Gradle would use the service
-// even if the service is not used by any task or transformation
-abstract class ComposeMultiplatformBuildService : BuildService<ComposeMultiplatformBuildService.Parameters>,
-    OperationCompletionListener, AutoCloseable {
-
-    abstract class Parameters : BuildServiceParameters {
-        abstract val gradlePropertiesCacheKindSnapshot: MapProperty<String, String>
-        abstract val localPropertiesCacheKindSnapshot: MapProperty<String, String>
-    }
-
-    private val log = Logging.getLogger(this.javaClass)
-
-    internal abstract val unsupportedCompilerPlugins: SetProperty<Provider<SubpluginArtifact?>>
-    internal abstract val delayedWarnings: SetProperty<String>
-    internal val gradlePropertiesSnapshot: Map<String, String> = parameters.gradlePropertiesCacheKindSnapshot.get()
-    internal val localPropertiesSnapshot: Map<String, String> = parameters.localPropertiesCacheKindSnapshot.get()
-
-    fun warnOnceAfterBuild(message: String) {
-        delayedWarnings.add(message)
-    }
-
-    override fun close() {
-        notifyAboutUnsupportedCompilerPlugin()
-        logDelayedWarnings()
-    }
-
-    private fun notifyAboutUnsupportedCompilerPlugin() {
-        val unsupportedCompilerPlugin = unsupportedCompilerPlugins.orNull
-            ?.firstOrNull()
-            ?.orNull
-
-        if (unsupportedCompilerPlugin != null) {
-            log.error(createWarningAboutNonCompatibleCompiler(unsupportedCompilerPlugin.groupId))
-        }
-    }
-
-    private fun logDelayedWarnings() {
-        for (warning in delayedWarnings.get()) {
-            log.warn(warning)
-        }
-    }
-
-    override fun onFinish(event: FinishEvent) {}
-
-    companion object {
-        private val COMPOSE_SERVICE_FQ_NAME = ComposeMultiplatformBuildService::class.java.canonicalName
-
-        private fun findExistingComposeService(project: Project): ComposeMultiplatformBuildService? {
-            val registration = project.gradle.sharedServices.registrations.findByName(COMPOSE_SERVICE_FQ_NAME)
-            val service = registration?.service?.orNull
-            if (service != null) {
-                if (service !is ComposeMultiplatformBuildService) {
-                    // Compose Gradle plugin was probably loaded more than once
-                    // See https://github.com/JetBrains/compose-multiplatform/issues/3459
-                    if (service.javaClass.canonicalName == ComposeMultiplatformBuildService::class.java.canonicalName) {
-                        val rootScript = project.rootProject.buildFile
-                        error("""
-                            Compose Multiplatform Gradle plugin has been loaded in multiple classloaders.
-                            To avoid classloading issues, declare Compose Gradle Plugin in root build file $rootScript.
-                        """.trimIndent())
-                    } else {
-                        error("Shared build service '$COMPOSE_SERVICE_FQ_NAME' has unexpected type: ${service.javaClass.canonicalName}")
-                    }
-                }
-                return service
-            }
-
-            return null
-        }
-
-        fun getInstance(project: Project): ComposeMultiplatformBuildService =
-            findExistingComposeService(project) ?: error("ComposeMultiplatformBuildService was not initialized!")
-
-        @Suppress("UnstableApiUsage")
-        fun init(project: Project) {
-            val existingService = findExistingComposeService(project)
-            if (existingService != null) {
-                return
-            }
-
-            val newService = project.gradle.sharedServices.registerIfAbsent(COMPOSE_SERVICE_FQ_NAME, ComposeMultiplatformBuildService::class.java) {
-                it.parameters.initPropertiesSnapshots(project.rootProject)
-            }
-            // workaround to instanciate a  service even if it not binded to a task
-            BuildEventsListenerRegistryProvider.getInstance(project).onTaskCompletion(newService)
-        }
-
-        private fun Parameters.initPropertiesSnapshots(rootProject: Project) {
-            // we want to record original properties (explicitly set by a user)
-            // before we possibly change them in configureNativeCompilerCaching.kt
-            val localProperties = loadProperties(rootProject.localPropertiesFile)
-            for (cacheKindProperty in SUPPORTED_NATIVE_CACHE_KIND_PROPERTIES) {
-                rootProject.findProperty(cacheKindProperty)?.toString()?.let { value ->
-                    gradlePropertiesCacheKindSnapshot.put(cacheKindProperty, value)
-                }
-                localProperties[cacheKindProperty]?.toString()?.let { value ->
-                    localPropertiesCacheKindSnapshot.put(cacheKindProperty, value)
-                }
-            }
-        }
-    }
-}

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/ComposePlugin.kt

@@ -26,6 +26,8 @@ import org.jetbrains.compose.experimental.uikit.internal.resources.configureSync
 import org.jetbrains.compose.internal.KOTLIN_MPP_PLUGIN_ID
 import org.jetbrains.compose.internal.mppExt
 import org.jetbrains.compose.internal.mppExtOrNull
+import org.jetbrains.compose.internal.service.ConfigurationProblemReporterService
+import org.jetbrains.compose.internal.service.GradlePropertySnapshotService
 import org.jetbrains.compose.internal.utils.currentTarget
 import org.jetbrains.compose.web.WebExtension
 import org.jetbrains.kotlin.gradle.plugin.KotlinDependencyHandler
@@ -36,9 +38,14 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
 
 internal val composeVersion get() = ComposeBuildConfig.composeVersion
 
+private fun initBuildServices(project: Project) {
+    ConfigurationProblemReporterService.init(project)
+    GradlePropertySnapshotService.init(project)
+}
+
 abstract class ComposePlugin : Plugin<Project> {
     override fun apply(project: Project) {
-        ComposeMultiplatformBuildService.init(project)
+        initBuildServices(project)
 
         val composeExtension = project.extensions.create("compose", ComposeExtension::class.java, project)
         val desktopExtension = composeExtension.extensions.create("desktop", DesktopExtension::class.java)

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/experimental/internal/configureNativeCompilerCaching.kt

@@ -6,9 +6,9 @@
 package org.jetbrains.compose.experimental.internal
 
 import org.gradle.api.Project
-import org.jetbrains.compose.ComposeMultiplatformBuildService
 import org.jetbrains.compose.internal.KOTLIN_MPP_PLUGIN_ID
 import org.jetbrains.compose.internal.mppExt
+import org.jetbrains.compose.internal.service.ConfigurationProblemReporterService
 import org.jetbrains.compose.internal.utils.KGPPropertyProvider
 import org.jetbrains.compose.internal.utils.configureEachWithType
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
@@ -59,11 +59,10 @@ private fun KotlinNativeTarget.checkExplicitCacheKind() {
         for (provider in propertyProviders) {
             val value = provider.valueOrNull(cacheKindProperty)
             if (value != null) {
-                ComposeMultiplatformBuildService
+                ConfigurationProblemReporterService.reportProblem(
-                    .getInstance(project)
+                    project,
-                    .warnOnceAfterBuild(
+                    explicitCacheKindWarningMessage(cacheKindProperty, value, provider)
-                        explicitCacheKindWarningMessage(cacheKindProperty, value, provider)
+                )
-                    )
                 return
             }
         }

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/internal/service/AbstractComposeMultiplatformBuildService.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2020-2023 JetBrains s.r.o. and respective authors and developers.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package org.jetbrains.compose.internal.service
+
+import org.gradle.api.Project
+import org.gradle.api.services.BuildService
+import org.gradle.api.services.BuildServiceParameters
+import org.gradle.api.services.BuildServiceRegistration
+import org.gradle.tooling.events.FinishEvent
+import org.gradle.tooling.events.OperationCompletionListener
+
+// The service implements OperationCompletionListener just so Gradle would materialize the service even if the service is not used by any task or transformation
+ abstract class AbstractComposeMultiplatformBuildService<P : BuildServiceParameters> : BuildService<P> , OperationCompletionListener, AutoCloseable {
+    override fun onFinish(event: FinishEvent) {}
+    override fun close() {}
+}
+
+internal inline fun <reified Service : BuildService<*>> serviceName(instance: Service? = null): String =
+    fqName(instance)
+
+internal inline fun <reified Service : AbstractComposeMultiplatformBuildService<Params>, reified Params : BuildServiceParameters> registerServiceIfAbsent(
+    project: Project,
+    crossinline initParams: Params.() -> Unit = {}
+): BuildServiceRegistration<Service, Params> {
+    if (findRegistration<Service, Params>(project) == null) {
+        val newService = project.gradle.sharedServices.registerIfAbsent(fqName<Service>(), Service::class.java) {
+            it.parameters.initParams()
+        }
+        // Workaround to materialize a service even if it is not bound to a task
+        BuildEventsListenerRegistryProvider.getInstance(project).onTaskCompletion(newService)
+    }
+
+    return getExistingServiceRegistration(project)
+}
+
+internal inline fun <reified Service : BuildService<Params>, reified Params : BuildServiceParameters> getExistingServiceRegistration(
+    project: Project
+): BuildServiceRegistration<Service, Params> {
+    val registration = findRegistration<Service, Params>(project)
+        ?: error("Service '${serviceName<Service>()}' was not initialized")
+    return registration.verified(project)
+}
+
+private inline fun <reified Service : BuildService<Params>, reified Params : BuildServiceParameters> BuildServiceRegistration<*, *>.verified(
+    project: Project
+): BuildServiceRegistration<Service, Params> {
+    val parameters = parameters
+    // We are checking the type of parameters instead of the type of service
+    // to avoid materializing the service.
+    // After a service instance is created all changes made to its parameters won't be visible to
+    // that particular service instance.
+    // This is undesirable in some cases. For example, when reporting configuration problems,
+    // we want to collect all configuration issues from all projects first, then report issues all at once
+    // in execution phase.
+    if (parameters !is Params) {
+        // Compose Gradle plugin was probably loaded more than once
+        // See https://github.com/JetBrains/compose-multiplatform/issues/3459
+        if (fqName(parameters) == fqName<Params>()) {
+            val rootScript = project.rootProject.buildFile
+            error("""
+                Compose Multiplatform Gradle plugin has been loaded in multiple classloaders.
+                To avoid classloading issues, declare Compose Gradle Plugin in root build file $rootScript.
+            """.trimIndent())
+        } else {
+            error("Shared build service '${serviceName<Service>()}' parameters have unexpected type: ${fqName(parameters)}")
+        }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    return this as BuildServiceRegistration<Service, Params>
+}
+
+private inline fun <reified S : BuildService<P>, reified P : BuildServiceParameters> findRegistration(
+    project: Project
+): BuildServiceRegistration<*, *>? =
+    project.gradle.sharedServices.registrations.findByName(fqName<S>())
+
+private inline fun <reified T : Any> fqName(instance: T? = null) = T::class.java.canonicalName

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/internal/service/BuildEventsListenerRegistryProvider.kt

@@ -3,12 +3,13 @@
  * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
  */
 
-package org.jetbrains.compose.internal.utils
+package org.jetbrains.compose.internal.service
 
 import org.gradle.api.Project
 import org.gradle.build.event.BuildEventsListenerRegistry
 import javax.inject.Inject
 
+// a hack to get BuildEventsListenerRegistry conveniently, which can only be injected by Gradle
 @Suppress("UnstableApiUsage")
 internal abstract class BuildEventsListenerRegistryProvider @Inject constructor(val registry: BuildEventsListenerRegistry) {
     companion object {

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/internal/service/ConfigurationProblemReporterService.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2020-2023 JetBrains s.r.o. and respective authors and developers.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package org.jetbrains.compose.internal.service
+
+import org.gradle.api.Project
+import org.gradle.api.logging.Logging
+import org.gradle.api.provider.ListProperty
+import org.gradle.api.provider.Provider
+import org.gradle.api.provider.SetProperty
+import org.gradle.api.services.BuildServiceParameters
+import org.jetbrains.compose.createWarningAboutNonCompatibleCompiler
+import org.jetbrains.kotlin.gradle.plugin.SubpluginArtifact
+
+abstract class ConfigurationProblemReporterService : AbstractComposeMultiplatformBuildService<ConfigurationProblemReporterService.Parameters>() {
+    interface Parameters : BuildServiceParameters {
+        val unsupportedPluginWarningProviders: ListProperty<Provider<String?>>
+        val warnings: SetProperty<String>
+    }
+
+    private val log = Logging.getLogger(this.javaClass)
+
+    override fun close() {
+        warnAboutUnsupportedCompilerPlugin()
+        logWarnings()
+    }
+
+    private fun warnAboutUnsupportedCompilerPlugin() {
+        for (warningProvider in parameters.unsupportedPluginWarningProviders.get()) {
+            val warning = warningProvider.orNull
+            if (warning != null) {
+                log.warn(warning)
+            }
+        }
+    }
+
+    private fun logWarnings() {
+        for (warning in parameters.warnings.get()) {
+            log.warn(warning)
+        }
+    }
+    companion object {
+        fun init(project: Project) {
+            registerServiceIfAbsent<ConfigurationProblemReporterService, Parameters>(project)
+        }
+
+        private inline fun configureParameters(project: Project, fn: Parameters.() -> Unit) {
+            getExistingServiceRegistration<ConfigurationProblemReporterService, Parameters>(project)
+                .parameters.fn()
+        }
+
+        fun reportProblem(project: Project, message: String) {
+            configureParameters(project) { warnings.add(message) }
+        }
+
+        fun registerUnsupportedPluginProvider(project: Project, unsupportedPlugin: Provider<SubpluginArtifact?>) {
+            configureParameters(project) {
+                unsupportedPluginWarningProviders.add(unsupportedPlugin.map { unsupportedCompiler ->
+                    unsupportedCompiler?.groupId?.let { createWarningAboutNonCompatibleCompiler(it) }
+                })
+            }
+        }
+    }
+}

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/internal/service/GradlePropertySnapshotService.kt

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020-2023 JetBrains s.r.o. and respective authors and developers.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package org.jetbrains.compose.internal.service
+
+import org.gradle.api.Project
+import org.gradle.api.provider.MapProperty
+import org.gradle.api.services.BuildServiceParameters
+import org.jetbrains.compose.experimental.internal.SUPPORTED_NATIVE_CACHE_KIND_PROPERTIES
+import org.jetbrains.compose.internal.utils.loadProperties
+import org.jetbrains.compose.internal.utils.localPropertiesFile
+
+internal abstract class GradlePropertySnapshotService : AbstractComposeMultiplatformBuildService<GradlePropertySnapshotService.Parameters>() {
+    interface Parameters : BuildServiceParameters {
+        val gradlePropertiesCacheKindSnapshot: MapProperty<String, String>
+        val localPropertiesCacheKindSnapshot: MapProperty<String, String>
+    }
+
+    internal val gradleProperties: Map<String, String> = parameters.gradlePropertiesCacheKindSnapshot.get()
+    internal val localProperties: Map<String, String> = parameters.localPropertiesCacheKindSnapshot.get()
+
+    companion object {
+        fun init(project: Project) {
+            registerServiceIfAbsent<GradlePropertySnapshotService, Parameters>(project) {
+                initParams(project)
+            }
+        }
+
+        fun getInstance(project: Project): GradlePropertySnapshotService =
+            getExistingServiceRegistration<GradlePropertySnapshotService, Parameters>(project).service.get()
+
+        private fun Parameters.initParams(project: Project) {
+            // we want to record original properties (explicitly set by a user)
+            // before we possibly change them in configureNativeCompilerCaching.kt
+            val rootProject = project.rootProject
+            val localProperties = loadProperties(rootProject.localPropertiesFile)
+            for (cacheKindProperty in SUPPORTED_NATIVE_CACHE_KIND_PROPERTIES) {
+                rootProject.findProperty(cacheKindProperty)?.toString()?.let { value ->
+                    gradlePropertiesCacheKindSnapshot.put(cacheKindProperty, value)
+                }
+                localProperties[cacheKindProperty]?.toString()?.let { value ->
+                    localPropertiesCacheKindSnapshot.put(cacheKindProperty, value)
+                }
+            }
+        }
+    }
+}

gradle-plugins/compose/src/main/kotlin/org/jetbrains/compose/internal/utils/KGPPropertyProvider.kt

@@ -6,8 +6,7 @@
 package org.jetbrains.compose.internal.utils
 
 import org.gradle.api.Project
-import org.jetbrains.compose.ComposeMultiplatformBuildService
+import org.jetbrains.compose.internal.service.GradlePropertySnapshotService
-import java.util.*
 
 /**
  * Reads Kotlin Gradle plugin properties.
@@ -25,13 +24,13 @@ internal abstract class KGPPropertyProvider {
 
     class GradleProperties(private val project: Project) : KGPPropertyProvider() {
         override fun valueOrNull(propertyName: String): String? =
-            ComposeMultiplatformBuildService.getInstance(project).gradlePropertiesSnapshot[propertyName]
+            GradlePropertySnapshotService.getInstance(project).gradleProperties[propertyName]
         override val location: String = "gradle.properties"
     }
 
     class LocalProperties(private val project: Project) : KGPPropertyProvider() {
         override fun valueOrNull(propertyName: String): String? =
-            ComposeMultiplatformBuildService.getInstance(project).localPropertiesSnapshot[propertyName]
+            GradlePropertySnapshotService.getInstance(project).localProperties[propertyName]
         override val location: String = "local.properties"
     }
 }

gradle-plugins/compose/src/test/kotlin/org/jetbrains/compose/test/tests/integration/GradlePluginTest.kt

@@ -149,7 +149,7 @@ class GradlePluginTest : GradlePluginTestBase() {
         }
 
         fun testKotlinVersion(kotlinVersion: String) {
-            val args = arrayOf("build", "--dry-run")
+            val args = arrayOf("help")
             val commonPartOfWarning = "Compose Multiplatform Gradle plugin manages this property automatically"
             withNativeCacheKindWarningProject(kotlinVersion = kotlinVersion) {
                 gradle(*args).checks {
@@ -162,6 +162,11 @@ class GradlePluginTest : GradlePluginTestBase() {
                     check.logContainsOnce("Warning: 'kotlin.native.cacheKind' is explicitly set to 'none'")
                     check.logContainsOnce(commonPartOfWarning)
                 }
+
+                gradle(*args, "-Pkotlin.native.cacheKind=none").checks {
+                    check.logContainsOnce("Warning: 'kotlin.native.cacheKind' is explicitly set to 'none'")
+                    check.logContainsOnce(commonPartOfWarning)
+                }
             }
             withNativeCacheKindWarningProject(kotlinVersion = kotlinVersion) {
                 gradle(*args, "-Pkotlin.native.cacheKind=static").checks {

gradle-plugins/compose/src/test/kotlin/org/jetbrains/compose/test/tests/integration/UnsupportedCompilerPluginWarningTest.kt

@@ -11,34 +11,42 @@ class UnsupportedCompilerPluginWarningTest : GradlePluginTestBase() {
     private val androidxComposeCompilerGroupId = "androidx.compose.compiler"
     private val androidxComposeCompilerPlugin = "$androidxComposeCompilerGroupId:compiler:1.4.8"
 
-    @Suppress("RedundantUnitExpression")
+    private fun testCustomCompilerUnsupportedPlatformsWarning(
-    @Test
+        platforms: String,
-    fun testKotlinJs_shows_warning_for_androidx_compose_compiler() = testProject(
+        warningIsExpected: Boolean
-        TestProjects.customCompilerArgs, defaultTestEnvironment.copy(
+    ) {
-            kotlinVersion = "1.8.22",
+        testProject(
-            composeCompilerPlugin = "\"$androidxComposeCompilerPlugin\"",
+            TestProjects.customCompilerUnsupportedPlatformsWarning, defaultTestEnvironment.copy(
-            composeCompilerArgs = "\"suppressKotlinVersionCompatibilityCheck=1.8.22\""
+                kotlinVersion = "1.8.22",
-        )
+                composeCompilerPlugin = "\"$androidxComposeCompilerPlugin\"",
-    ).let {
+            )
-        it.gradle(":compileKotlinJs").checks {
+        ).apply {
-            check.taskSuccessful(":compileKotlinJs")
+            // repeat twice to check that configuration cache hit does not affect the result
-            check.logContains(createWarningAboutNonCompatibleCompiler(androidxComposeCompilerGroupId))
+            repeat(2) {
+                gradle("-Pplatforms=$platforms").checks {
+                    val warning = createWarningAboutNonCompatibleCompiler(androidxComposeCompilerGroupId)
+                    if (warningIsExpected) {
+                        check.logContainsOnce(warning)
+                    } else {
+                        check.logDoesntContain(warning)
+                    }
+                }
+            }
         }
-        Unit
     }
 
-    @Suppress("RedundantUnitExpression")
     @Test
-    fun testKotlinJvm_doesnt_show_warning_for_androidx_compose_compiler() = testProject(
+    fun testJs() {
-        TestProjects.customCompiler, defaultTestEnvironment.copy(
+        testCustomCompilerUnsupportedPlatformsWarning("js", warningIsExpected = true)
-            kotlinVersion = "1.8.22",
+    }
-            composeCompilerPlugin = "\"$androidxComposeCompilerPlugin\"",
+
-        )
+    @Test
-    ).let {
+    fun testIos() {
-        it.gradle(":run").checks {
+        testCustomCompilerUnsupportedPlatformsWarning("ios", warningIsExpected = true)
-            check.taskSuccessful(":run")
+    }
-            check.logDoesntContain(createWarningAboutNonCompatibleCompiler(androidxComposeCompilerGroupId))
+
-        }
+    @Test
-        Unit
+    fun testJvm() {
+        testCustomCompilerUnsupportedPlatformsWarning("jvm", warningIsExpected = false)
     }
 }

gradle-plugins/compose/src/test/kotlin/org/jetbrains/compose/test/utils/TestProjects.kt

@@ -12,6 +12,7 @@ object TestProjects {
     const val proguard = "application/proguard"
     const val customCompiler = "application/custom-compiler"
     const val customCompilerArgs = "application/custom-compiler-args"
+    const val customCompilerUnsupportedPlatformsWarning = "application/customCompilerUnsupportedPlatformsWarning"
     const val jvmKotlinDsl = "application/jvmKotlinDsl"
     const val moduleClashCli = "application/moduleClashCli"
     const val javaLogger = "application/javaLogger"

gradle-plugins/compose/src/test/test-projects/application/customCompilerUnsupportedPlatformsWarning/build.gradle

@@ -0,0 +1,39 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.compose"
+}
+
+repositories {
+    google()
+    jetbrainsCompose()
+}
+
+kotlin {
+    def platforms = project.property("platforms").split(",")
+    if (platforms.contains("jvm")) {
+        jvm()
+    }
+    if (platforms.contains("js")) {
+        js(IR) {
+            browser()
+            binaries.executable()
+        }
+    }
+    if (platforms.contains("ios")) {
+        ios()
+    }
+
+    sourceSets {
+        commonMain {
+            dependencies {
+                implementation compose.runtime
+                implementation compose.material
+                implementation compose.foundation
+            }
+        }
+    }
+}
+
+compose {
+    kotlinCompilerPlugin.set(COMPOSE_COMPILER_PLUGIN_PLACEHOLDER)
+}

gradle-plugins/compose/src/test/test-projects/application/customCompilerUnsupportedPlatformsWarning/gradle.properties

@@ -0,0 +1,2 @@
+org.jetbrains.compose.experimental.jscanvas.enabled=true
+org.jetbrains.compose.experimental.uikit.enabled=true

gradle-plugins/compose/src/test/test-projects/application/customCompilerUnsupportedPlatformsWarning/settings.gradle

@@ -0,0 +1,11 @@
+pluginManagement {
+    plugins {
+        id 'org.jetbrains.kotlin.multiplatform' version 'KOTLIN_VERSION_PLACEHOLDER'
+        id 'org.jetbrains.compose' version 'COMPOSE_GRADLE_PLUGIN_VERSION_PLACEHOLDER'
+    }
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+    }
+}
+rootProject.name = "customCompilerUnsupportedPlatformsWarning"

gradle-plugins/compose/src/test/test-projects/application/customCompilerUnsupportedPlatformsWarning/src/commonMain/kotlin/App.kt

@@ -0,0 +1,19 @@
+import androidx.compose.material.Button
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+
+@Composable
+fun App() {
+    MaterialTheme {
+        var message by remember { mutableStateOf("Press the button!") }
+
+        Button(
+            onClick = { message = "Welcome to Compose Multiplatform!" }
+        ) {
+            Text(message)
+        }
+    }
+}