(#) Kapt usage should be replaced with KSP !!! WARNING: Kapt usage should be replaced with KSP This is a warning. Id : `KaptUsageInsteadOfKsp` Summary : Kapt usage should be replaced with KSP Severity : Warning Category : Performance Platform : Android Vendor : Android Open Source Project Feedback : https://issuetracker.google.com/issues/new?component=192708 Since : 8.1.0 (July 2023) Affects : Gradle build files Editing : This check runs on the fly in the IDE editor See : https://developer.android.com/studio/build/migrate-to-ksp Implementation : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/GradleDetector.kt) Tests : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/GradleDetectorTest.kt) KSP is a more efficient replacement for kapt. For libraries that support both, KSP should be used to improve build times. !!! Tip This lint check has an associated quickfix available in the IDE. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text build.gradle:9:Warning: This library supports using KSP instead of kapt, which greatly improves performance. Learn more: https://developer.android.com/studio/build/migrate-to-ksp [KaptUsageInsteadOfKsp] kapt 'androidx.room:room-compiler:2.5.0' ---------------------------------------- build.gradle:10:Warning: This library supports using KSP instead of kapt, which greatly improves performance. Learn more: https://developer.android.com/studio/build/migrate-to-ksp [KaptUsageInsteadOfKsp] kapt "androidx.room:room-compiler:$room_version" ------------------------------------------------ build.gradle:13:Warning: This library supports using KSP instead of kapt, which greatly improves performance. Learn more: https://developer.android.com/studio/build/migrate-to-ksp [KaptUsageInsteadOfKsp] kapt 'com.github.bumptech.glide:compiler:4.14.2' ------------------------------------------------ build.gradle:14:Warning: This library supports using KSP instead of kapt, which greatly improves performance. Learn more: https://developer.android.com/studio/build/migrate-to-ksp [KaptUsageInsteadOfKsp] kapt("com.github.bumptech.glide:compiler:glide_version") -------------------------------------------------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `build.gradle`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~groovy linenumbers plugins { id 'com.android.application' id 'kotlin-android' id 'kotlin-kapt' id 'com.google.devtools.ksp' } dependencies { def room_version = "2.5.0" kapt 'androidx.room:room-compiler:2.5.0' kapt "androidx.room:room-compiler:$room_version" def glide_version = "4.14.2" kapt 'com.github.bumptech.glide:compiler:4.14.2' kapt("com.github.bumptech.glide:compiler:glide_version") } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can also visit the [source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/GradleDetectorTest.kt) for the unit tests for this check to see additional scenarios. The above example was automatically extracted from the first unit test found for this lint check, `GradleDetector.testKaptToKspMigration`. To report a problem with this extracted sample, visit https://issuetracker.google.com/issues/new?component=192708. (##) Suppressing You can suppress false positives using one of the following mechanisms: * Using a suppression comment like this on the line above: ```kt //noinspection KaptUsageInsteadOfKsp problematicStatement() ``` * Using a special `lint.xml` file in the source tree which turns off the check in that folder and any sub folder. A simple file might look like this: ```xml <?xml version="1.0" encoding="UTF-8"?> <lint> <issue id="KaptUsageInsteadOfKsp" severity="ignore" /> </lint> ``` Instead of `ignore` you can also change the severity here, for example from `error` to `warning`. You can find additional documentation on how to filter issues by path, regular expression and so on [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html). * In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like ```gradle lintOptions { disable 'KaptUsageInsteadOfKsp' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore KaptUsageInsteadOfKsp ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).