diff --git a/README.md b/README.md
index 3705f93..d86f5b8 100644
--- a/README.md
+++ b/README.md
@@ -95,7 +95,9 @@ For Android compatibility, you may use a shorthand, which will set up the [Gummy
 ```kotlin
 expediter {
     platform {
-        androidSdk = 21
+        android {
+            sdk = 21
+        }
     }
 }
 ```
@@ -112,7 +114,7 @@ expediter {
 configurations.create("_descriptors_")
 
 dependencies {
-    add("_descriptors_", "com.toasttab.android:gummy-bears-api-21:0.6.1@expediter")
+    add("_descriptors_", "com.toasttab.android:gummy-bears-api-21:0.7.0@expediter")
 }
 ```
 
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterPlugin.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterPlugin.kt
index b7b3450..100f375 100644
--- a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterPlugin.kt
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterPlugin.kt
@@ -15,6 +15,7 @@
 
 package com.toasttab.expediter.gradle
 
+import com.toasttab.expediter.gradle.config.ExpediterExtension
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.tasks.SourceSetContainer
@@ -46,13 +47,12 @@ class ExpediterPlugin : Plugin<Project> {
 
             val expediterConfigurations = extension.platform.expediterConfigurations.toMutableList()
 
-            if (extension.platform.androidSdk != null) {
-                val config = project.configurations.create("_expediter_type_descriptors_")
-                project.dependencies.add(
-                    config.name,
-                    "com.toasttab.android:gummy-bears-api-${extension.platform.androidSdk}:0.7.0@expediter"
-                )
-                expediterConfigurations.add(config.name)
+            extension.platform.android.run {
+                if (sdk != null) {
+                    val config = project.configurations.create("_expediter_type_descriptors_")
+                    project.dependencies.add(config.name, artifact())
+                    expediterConfigurations.add(config.name)
+                }
             }
 
             for (conf in expediterConfigurations) {
@@ -63,8 +63,8 @@ class ExpediterPlugin : Plugin<Project> {
                 animalSnifferSignatures.from(project.configurations.getByName(conf))
             }
 
-            if (extension.platform.jvmVersion != null && extension.platform.androidSdk != null) {
-                logger.warn("Both jvmVersion and androidSdk are set.")
+            if (extension.platform.jvmVersion != null && extension.platform.android.sdk != null) {
+                logger.warn("Both JVM version and Android SDK are set.")
             }
 
             for (conf in extension.platform.configurations) {
@@ -73,8 +73,7 @@ class ExpediterPlugin : Plugin<Project> {
 
             ignore = extension.ignoreSpec.buildIgnore()
 
-            @Suppress("DEPRECATION")
-            ignoreFile = (extension.ignoreSpec.file ?: extension.ignoreFile)?.let { project.file(it) }
+            ignoreFile = extension.ignoreSpec.file?.let(project::file)
 
             report = project.layout.buildDirectory.file("expediter.json").get().asFile
 
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/AndroidSpec.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/AndroidSpec.kt
new file mode 100644
index 0000000..2cdfb3f
--- /dev/null
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/AndroidSpec.kt
@@ -0,0 +1,17 @@
+package com.toasttab.expediter.gradle.config
+
+class AndroidSpec {
+    var sdk: Int? = null
+    var coreLibraryDesugaring: Boolean = false
+    var gummyBearsVersion: String = "0.7.0"
+
+    fun artifact(): String {
+        val base = "com.toasttab.android:gummy-bears-api-$sdk:$gummyBearsVersion"
+
+        return if (coreLibraryDesugaring) {
+            "$base:coreLib2@expediter"
+        } else {
+            "$base@expediter"
+        }
+    }
+}
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ApplicationClassSelector.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ApplicationSpec.kt
similarity index 94%
rename from plugin/src/main/kotlin/com/toasttab/expediter/gradle/ApplicationClassSelector.kt
rename to plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ApplicationSpec.kt
index 697588f..9a285d7 100644
--- a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ApplicationClassSelector.kt
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ApplicationSpec.kt
@@ -13,9 +13,9 @@
  * limitations under the License.
  */
 
-package com.toasttab.expediter.gradle
+package com.toasttab.expediter.gradle.config
 
-class ApplicationClassSelector(
+class ApplicationSpec(
     val configurations: MutableList<String>,
     val files: MutableList<String> = mutableListOf(),
     val sourceSets: MutableList<String> = mutableListOf()
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterExtension.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ExpediterExtension.kt
similarity index 56%
rename from plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterExtension.kt
rename to plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ExpediterExtension.kt
index 03f909f..e8ad208 100644
--- a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/ExpediterExtension.kt
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/ExpediterExtension.kt
@@ -13,27 +13,36 @@
  * limitations under the License.
  */
 
-package com.toasttab.expediter.gradle
+package com.toasttab.expediter.gradle.config
 
 import org.gradle.api.Action
+import org.slf4j.LoggerFactory
 
 abstract class ExpediterExtension {
-    var application: ApplicationClassSelector = ApplicationClassSelector(configuration = "runtimeClasspath", sourceSet = "main")
-    var platform: PlatformClassSelector = PlatformClassSelector()
+    companion object {
+        private val LOGGER = LoggerFactory.getLogger(ExpediterExtension::class.java)
+    }
 
-    val ignoreSpec = IgnoreSpec()
+    var application: ApplicationSpec = ApplicationSpec(configuration = "runtimeClasspath", sourceSet = "main")
+    var platform: PlatformSpec = PlatformSpec()
 
-    @Deprecated("use the ignore closure instead", replaceWith = ReplaceWith("ignore { file = ignoreFile }"))
-    var ignoreFile: Any? = null
+    val ignoreSpec = IgnoreSpec()
 
     var failOnIssues: Boolean = false
 
-    fun application(configure: Action<ApplicationClassSelector>) {
-        application = ApplicationClassSelector()
+    @Deprecated("use ignore closure instead")
+    var ignoreFile: Any? = null
+        set(value) {
+            LOGGER.warn("ignoreFile property is deprecated and will be removed, use ignore { file = ... }")
+            ignoreSpec.file = value
+        }
+
+    fun application(configure: Action<ApplicationSpec>) {
+        application = ApplicationSpec()
         configure.execute(application)
     }
 
-    fun platform(configure: Action<PlatformClassSelector>) {
+    fun platform(configure: Action<PlatformSpec>) {
         configure.execute(platform)
     }
 
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/IgnoreSpec.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/IgnoreSpec.kt
similarity index 92%
rename from plugin/src/main/kotlin/com/toasttab/expediter/gradle/IgnoreSpec.kt
rename to plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/IgnoreSpec.kt
index 75e1f78..61d135b 100644
--- a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/IgnoreSpec.kt
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/IgnoreSpec.kt
@@ -1,4 +1,4 @@
-package com.toasttab.expediter.gradle
+package com.toasttab.expediter.gradle.config
 
 import com.toasttab.expediter.ignore.Ignore
 
diff --git a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/PlatformClassSelector.kt b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/PlatformSpec.kt
similarity index 60%
rename from plugin/src/main/kotlin/com/toasttab/expediter/gradle/PlatformClassSelector.kt
rename to plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/PlatformSpec.kt
index ae0cf33..8cb6263 100644
--- a/plugin/src/main/kotlin/com/toasttab/expediter/gradle/PlatformClassSelector.kt
+++ b/plugin/src/main/kotlin/com/toasttab/expediter/gradle/config/PlatformSpec.kt
@@ -13,15 +13,35 @@
  * limitations under the License.
  */
 
-package com.toasttab.expediter.gradle
+package com.toasttab.expediter.gradle.config
+
+import org.gradle.api.Action
+import org.slf4j.LoggerFactory
+
+class PlatformSpec {
+    companion object {
+        private val LOGGER = LoggerFactory.getLogger(PlatformSpec::class.java)
+    }
+
+    val animalSnifferConfigurations: MutableList<String> = mutableListOf()
+    val expediterConfigurations: MutableList<String> = mutableListOf()
+    val configurations: MutableList<String> = mutableListOf()
 
-class PlatformClassSelector(
-    val animalSnifferConfigurations: MutableList<String> = mutableListOf(),
-    val expediterConfigurations: MutableList<String> = mutableListOf(),
-    val configurations: MutableList<String> = mutableListOf(),
-    var androidSdk: Int? = null,
     var jvmVersion: Int? = null
-) {
+
+    @Deprecated("use android closure instead")
+    var androidSdk: Int? = null
+        set(value) {
+            LOGGER.warn("androidSdk property is deprecated and will be removed, use android { sdk = ... }")
+            android.sdk = value
+    }
+
+    val android: AndroidSpec = AndroidSpec()
+
+    fun android(configure: Action<AndroidSpec>) {
+        configure.execute(android)
+    }
+
     fun animalSnifferConfiguration(configuration: String) {
         animalSnifferConfigurations.add(configuration)
     }
diff --git a/plugin/src/test/kotlin/com/toasttab/expediter/gradle/ExpediterPluginIntegrationTest.kt b/plugin/src/test/kotlin/com/toasttab/expediter/gradle/ExpediterPluginIntegrationTest.kt
index 3e14af5..fc25b19 100644
--- a/plugin/src/test/kotlin/com/toasttab/expediter/gradle/ExpediterPluginIntegrationTest.kt
+++ b/plugin/src/test/kotlin/com/toasttab/expediter/gradle/ExpediterPluginIntegrationTest.kt
@@ -34,7 +34,9 @@ class ExpediterPluginIntegrationTest {
     fun `android compat`(project: TestProject) {
         project.createRunner()
             .withArguments("check")
-            .buildAndFail()
+            .buildAndFail().let {
+                println(it.output)
+            }
 
         val report = IssueReport.fromJson(project.dir.resolve("build/expediter.json").readText())