use multiplatform plugin instead of jvm

build-logic/src/main/kotlin/elmslie.kotlin-multiplatform-lib.gradle.kts

@@ -1,22 +1,22 @@
-@file:Suppress("UnstableApiUsage")
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     kotlin("multiplatform")
-    id("com.android.library")
     id("elmslie.detekt")
 }
 
 kotlin {
     applyDefaultHierarchyTemplate()
 
-    androidTarget {
+    jvm {
         compilations.all {
-            kotlinOptions {
-                jvmTarget = JvmTarget.toString()
+            compilerOptions.configure {
+                jvmTarget.set(JvmTarget.JVM_11)
             }
         }
     }
 
-    iosX64()
     iosArm64()
-}
+    iosSimulatorArm64()
+    iosX64()
+}

build.gradle.kts

@@ -1,4 +1,4 @@
 plugins {
     alias(libs.plugins.androidApplication) apply false
-    alias(libs.plugins.kotlinJvm) apply false
+    alias(libs.plugins.kotlinMultiplatform) apply false
 }

elmslie-core/build.gradle.kts

@@ -1,9 +1,19 @@
 plugins {
-    id("elmslie.kotlin-jvm-lib")
-    id("elmslie.tests-convention")
+    id("elmslie.kotlin-multiplatform-lib")
 }
 
-dependencies {
-    implementation(libs.kotlinx.coroutinesCore)
-    testImplementation(libs.kotlinx.coroutinesTest)
-}
+kotlin {
+    sourceSets {
+        val commonMain by getting {
+            dependencies {
+                implementation(libs.kotlinx.coroutinesCore)
+            }
+        }
+        val commonTest by getting {
+            dependencies {
+                implementation(libs.kotlinx.coroutinesTest)
+                implementation(libs.kotlin.test)
+            }
+        }
+    }
+}

gradle/libs.versions.toml

@@ -24,5 +24,5 @@ kotlinx-coroutinesCore = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-co
 kotlinx-coroutinesTest = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "coroutines" }
 
 [plugins]
-kotlinJvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
+kotlinMultiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
 androidApplication = { id = "com.android.application", version.ref = "agp" }