Function to return supported Kotlin version

detekt-gradle-plugin/src/main/kotlin/io/gitlab/arturbosch/detekt/DetektPlugin.kt

@@ -6,10 +6,13 @@ import io.gitlab.arturbosch.detekt.internal.DetektAndroid
 import io.gitlab.arturbosch.detekt.internal.DetektJvm
 import io.gitlab.arturbosch.detekt.internal.DetektMultiplatform
 import io.gitlab.arturbosch.detekt.internal.DetektPlain
+import org.gradle.api.Incubating
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.plugins.ReportingBasePlugin
 import org.gradle.api.reporting.ReportingExtension
+import java.net.URL
+import java.util.jar.Manifest
 
 class DetektPlugin : Plugin<Project> {
 
@@ -176,3 +179,16 @@ class DetektPlugin : Plugin<Project> {
 const val CONFIGURATION_DETEKT = "detekt"
 const val CONFIGURATION_DETEKT_PLUGINS = "detektPlugins"
 const val USE_WORKER_API = "detekt.use.worker.api"
+
+@Incubating
+fun getSupportedKotlinVersion(): String {
+    return DetektPlugin::class.java.classLoader.getResources("META-INF/MANIFEST.MF")
+        .asSequence()
+        .mapNotNull { runCatching { readVersion(it) }.getOrNull() }
+        .first()
+}
+
+private fun readVersion(resource: URL): String? = resource.openConnection()
+    .apply { useCaches = false }
+    .getInputStream()
+    .use { Manifest(it).mainAttributes.getValue("KotlinImplementationVersion") }

detekt-gradle-plugin/src/test/kotlin/io/gitlab/arturbosch/detekt/DetektPlainSpec.kt

@@ -77,4 +77,11 @@ class DetektPlainSpec {
             assertThat(argumentString).doesNotContain("--classpath")
         }
     }
+
+    @Test
+    fun `resolves kotlin version from manifest`() {
+        val version = getSupportedKotlinVersion()
+
+        assertThat(version).isNotBlank()
+    }
 }

website/docs/gettingstarted/gradle.mdx

@@ -513,13 +513,13 @@ detekt was compiled with Kotlin 1.8.0 but is currently running with 1.7.0
 
 This happens when the version of `kotlin-compiler-embeddable` is overridden on detekt's classpath (in the `detekt`
 dependency configuration). This can happen when build scripts use things like this which override all dependency
-configurations:
+configurations (e.g. by [Spring Dependency Management Plugin](https://docs.spring.io/dependency-management-plugin/docs/current/reference/html/):
 
 ```kotlin
 configurations.all {
     resolutionStrategy.eachDependency {
         if (requested.group == "org.jetbrains.kotlin") {
-            useVersion("1.7.0")
+            useVersion(io.gitlab.arturbosch.detekt.getSupportedKotlinVersion())
         }
     }
 }