Upgrade AGP to 9.2.0

Building release builds is still broken on encrypted linux file systems but that's seems
to be not a priority for Google to fix. Upgrade so that developers can avoid suffering from
bugs such as preview rendering failure.

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/build.gradle.kts

@@ -7,8 +7,7 @@ import com.android.build.api.dsl.ApplicationExtension
 
 plugins {
     alias(libs.plugins.android.application)
-    alias(libs.plugins.jetbrains.kotlin.android)
-    alias(libs.plugins.jetbrains.kotlin.kapt)
+    alias(libs.plugins.android.legacy.kapt)
     alias(libs.plugins.google.ksp)
     alias(libs.plugins.jetbrains.kotlin.parcelize)
     alias(libs.plugins.jetbrains.kotlinx.serialization)

build.gradle.kts

@@ -3,10 +3,16 @@
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
+buildscript {
+    dependencies {
+        // https://developer.android.com/build/releases/agp-9-0-0-release-notes#runtime-dependency-on-kotlin-gradle-plugin-upgrade
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${libs.versions.kotlin.get()}")
+    }
+}
+
 plugins {
     alias(libs.plugins.android.application) apply false
-    alias(libs.plugins.jetbrains.kotlin.android) apply false
-    alias(libs.plugins.jetbrains.kotlin.kapt) apply false
+    alias(libs.plugins.android.legacy.kapt) apply false
     alias(libs.plugins.google.ksp) apply false
     alias(libs.plugins.jetbrains.kotlin.parcelize) apply false
     alias(libs.plugins.jetbrains.kotlinx.serialization) apply false

gradle.properties

@@ -1,4 +1,3 @@
-android.useAndroidX=true
 org.gradle.jvmargs=-Xmx2048M --add-opens jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED
 systemProp.file.encoding=utf-8
 

gradle/libs.versions.toml

@@ -5,7 +5,7 @@
 
 [versions]
 acra = "5.13.1"
-agp = "8.13.2"
+agp = "9.2.1"
 appcompat = "1.7.1"
 assertj = "3.27.7"
 autoservice-google = "1.1.1"
@@ -136,9 +136,8 @@ zacsweers-autoservice-compiler = { module = "dev.zacsweers.autoservice:auto-serv
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
+android-legacy-kapt = { id = "com.android.legacy-kapt", version.ref = "agp" } # Needed for statesaver
 google-ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
-jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
-jetbrains-kotlin-kapt = { id = "org.jetbrains.kotlin.kapt", version.ref = "kotlin" } # Needed for statesaver
 jetbrains-kotlin-parcelize = { id = "org.jetbrains.kotlin.plugin.parcelize", version.ref = "kotlin" }
 jetbrains-kotlinx-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 sonarqube = { id = "org.sonarqube", version.ref = "sonarqube" }