coil-kt · colinrtwhite · Feb 13, 2026 · Feb 12, 2026
diff --git a/build.gradle.kts b/build.gradle.kts
@@ -12,7 +12,6 @@ import org.jetbrains.kotlin.gradle.dsl.abi.AbiValidationExtension
 import org.jetbrains.kotlin.gradle.dsl.abi.AbiValidationMultiplatformExtension
 import org.jetbrains.kotlin.gradle.dsl.abi.AbiValidationVariantSpec
 import org.jetbrains.kotlin.gradle.dsl.abi.ExperimentalAbiValidation
-import org.jetbrains.kotlin.gradle.plugin.KotlinBasePlugin
 import org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
@@ -27,7 +26,6 @@ buildscript {
         classpath(libs.gradlePlugin.atomicFu)
         classpath(libs.gradlePlugin.jetbrainsCompose)
         classpath(libs.gradlePlugin.composeCompiler)
-        classpath(libs.gradlePlugin.kotlin)
         classpath(libs.gradlePlugin.mavenPublish)
         classpath(libs.gradlePlugin.paparazzi)
         classpath(libs.gradlePlugin.roborazzi)
@@ -104,12 +102,6 @@ allprojects {
         }
     }
 
-    tasks.configureEach {
-        if (name.startsWith("spotless")) {
-            notCompatibleWithConfigurationCache("https://github.com/diffplug/spotless/issues/2459")
-        }
-    }
-
     plugins.withId("org.jetbrains.kotlin.plugin.compose") {
         extensions.configure<ComposeCompilerGradlePluginExtension> {
             stabilityConfigurationFiles.add {
@@ -140,30 +132,7 @@ allprojects {
     }
 
     if (project.name in publicModules) {
-        @OptIn(ExperimentalAbiValidation::class)
-        plugins.withType<KotlinBasePlugin> {
-            extensions.configure<KotlinProjectExtension> {
-                fun AbiValidationVariantSpec.configure() = filters {
-                    excluded {
-                        annotatedWith.add("coil3.annotation.InternalCoilApi")
-                    }
-                }
-
-                // Unfortunately the 'enabled' property doesn't share a common interface.
-                val singleTargetExtension = extensions.findByType<AbiValidationExtension>()
-                if (singleTargetExtension != null) {
-                    singleTargetExtension.apply {
-                        enabled = true
-                        configure()
-                    }
-                } else {
-                    extensions.configure<AbiValidationMultiplatformExtension> {
-                        enabled = true
-                        configure()
-                    }
-                }
-            }
-        }
+        configureAbiValidation()
     }
 
     // Skiko's runtime files are ESM-only so preload our shim to let Node require them during tests.
@@ -176,6 +145,52 @@ allprojects {
     }
 }
 
+fun configureAbiValidation() {
+    @OptIn(ExperimentalAbiValidation::class)
+    fun Project.configureKotlinProject() {
+        extensions.configure<KotlinProjectExtension> {
+            fun AbiValidationVariantSpec.configure() = filters {
+                excluded {
+                    annotatedWith.add("coil3.annotation.InternalCoilApi")
+                }
+            }
+
+            // Unfortunately the 'enabled' property doesn't share a common interface.
+            extensions.findByType<AbiValidationExtension>()?.apply {
+                enabled = true
+                configure()
+            }
+            extensions.findByType<AbiValidationMultiplatformExtension>()?.apply {
+                enabled = true
+                configure()
+            }
+        }
+    }
+
+    pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
+        configureKotlinProject()
+    }
+    pluginManager.withPlugin("com.android.kotlin.multiplatform.library") {
+        pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
+            configureKotlinProject()
+        }
+    }
+    pluginManager.withPlugin("org.jetbrains.kotlin.jvm") {
+        configureKotlinProject()
+    }
+
+    // Built-in Kotlin Android wires the Kotlin extension during Android plugin application.
+    pluginManager.withPlugin("com.android.application") {
+        configureKotlinProject()
+    }
+    pluginManager.withPlugin("com.android.library") {
+        configureKotlinProject()
+    }
+    pluginManager.withPlugin("com.android.test") {
+        configureKotlinProject()
+    }
+}
+
 private val ktlintRules = buildMap {
     put("ktlint_code_style", "intellij_idea")
 

diff --git a/buildSrc/src/main/kotlin/coil3/multiplatform.kt b/buildSrc/src/main/kotlin/coil3/multiplatform.kt
@@ -17,10 +17,11 @@ fun Project.addAllMultiplatformTargets(
     plugins.withId("org.jetbrains.kotlin.multiplatform") {
         extensions.configure<KotlinMultiplatformExtension> {
             applyCoilHierarchyTemplate()
-            val sharedKarmaConfigDirectory = rootProject.projectDir.resolve("karma.config.d")
 
             jvm()
 
+            val sharedKarmaConfigDirectory = rootProject.projectDir.resolve("karma.config.d")
+
             js {
                 browser {
                     testTask {

diff --git a/coil-gif/build.gradle.kts b/coil-gif/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidLibrary
 
 plugins {
     id("com.android.library")
-    id("kotlin-android")
 }
 
 androidLibrary(name = "coil3.gif")

diff --git a/coil-video/build.gradle.kts b/coil-video/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidLibrary
 
 plugins {
     id("com.android.library")
-    id("kotlin-android")
 }
 
 androidLibrary(name = "coil3.video")

diff --git a/gradle.properties b/gradle.properties
@@ -7,7 +7,6 @@ android.javaCompile.suppressSourceTargetDeprecationWarning=true
 android.useAndroidX=true
 
 # https://github.com/cashapp/paparazzi/issues/2095
-android.builtInKotlin=false
 android.newDsl=false
 
 # Disable welcome message.

diff --git a/internal/benchmark/build.gradle.kts b/internal/benchmark/build.gradle.kts
@@ -3,7 +3,6 @@ import com.android.build.api.dsl.ManagedVirtualDevice
 
 plugins {
     id("com.android.test")
-    id("kotlin-android")
     id("androidx.baselineprofile.producer")
 }
 

diff --git a/internal/test-compose-screenshot/build.gradle.kts b/internal/test-compose-screenshot/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidLibrary
 
 plugins {
     id("com.android.library")
-    id("kotlin-android")
     id("org.jetbrains.compose")
     id("org.jetbrains.kotlin.plugin.compose")
     alias(libs.plugins.screenshot)

diff --git a/internal/test-paparazzi/build.gradle.kts b/internal/test-paparazzi/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidLibrary
 
 plugins {
     id("com.android.library")
-    id("kotlin-android")
     id("org.jetbrains.compose")
     id("org.jetbrains.kotlin.plugin.compose")
     id("app.cash.paparazzi")

diff --git a/samples/compose-android/build.gradle.kts b/samples/compose-android/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidApplication
 
 plugins {
     id("com.android.application")
-    id("kotlin-android")
     id("org.jetbrains.compose")
     id("org.jetbrains.kotlin.plugin.compose")
 }

diff --git a/samples/view/build.gradle.kts b/samples/view/build.gradle.kts
@@ -2,7 +2,6 @@ import coil3.androidApplication
 
 plugins {
     id("com.android.application")
-    id("kotlin-android")
 }
 
 androidApplication(name = "sample.view") {