2.2.20-2.0.3 + protobufJavalite build errors

[alexmirash]

Updating KSP from 2.2.20-2.0.2 to 2.2.20-2.0.3 causes conflicts and build errors when using protobuf.
2.2.20-2.0.2 version (and previous) work absolutely fine

• Exception is:
  org.gradle.internal.execution.WorkValidationException: Some problems were found with the configuration of task '::generateDebugProto' (type 'GenerateProtoTask').

  • Gradle detected a problem with the following location: '<project_path><module>\build\generated\sources\proto\debug\java'.

    Reason: Task '::kspDebugKotlin' uses this output of task '::generateDebugProto' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.

    Possible solutions:

    1. Declare task '::generateDebugProto' as an input of '::kspDebugKotlin'.
    2. Declare an explicit dependency on '::generateDebugProto' from '::kspDebugKotlin' using Task#dependsOn.
    3. Declare an explicit dependency on '::generateDebugProto' from '::kspDebugKotlin' using Task#mustRunAfter.

Setup:
// toml
ksp = "2.2.20-2.0.3"
protobufJavalite = "4.32.1"
protobuf-javalite = { module = "com.google.protobuf:protobuf-javalite", version.ref = "protobufJavalite" }

// build.gradle
protobuf {
protoc {
artifact = "com.google.protobuf:protoc:${libs.versions.protobufJavalite.get()}"
}
generateProtoTasks {
all().configureEach {
plugins {
create("java") {
option("lite")
}
}
}
}
}

[mirjalal]

same here +1

[SteinerOk]

Same error with SQLDelight

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':persistence:db-application:kspFreeDebugKotlinAndroid' (type 'KspAATask').
  - Gradle detected a problem with the following location: '/Users/ok/Documents/Projects/App-android/persistence/db-application/build/generated/sqldelight/code/ApplicationDatabase/commonMain'.
    
    Reason: Task ':persistence:db-application:kspFreeDebugKotlinAndroid' uses this output of task ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' as an input of ':persistence:db-application:kspFreeDebugKotlinAndroid'.
      2. Declare an explicit dependency on ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' from ':persistence:db-application:kspFreeDebugKotlinAndroid' using Task#dependsOn.
      3. Declare an explicit dependency on ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' from ':persistence:db-application:kspFreeDebugKotlinAndroid' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

* Try:
> Declare task ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' as an input of ':persistence:db-application:kspFreeDebugKotlinAndroid'
> Declare an explicit dependency on ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' from ':persistence:db-application:kspFreeDebugKotlinAndroid' using Task#dependsOn
> Declare an explicit dependency on ':persistence:db-application:generateCommonMainApplicationDatabaseInterface' from ':persistence:db-application:kspFreeDebugKotlinAndroid' using Task#mustRunAfter

BUILD FAILED in 5s

[hfmehmed]

Hi, Could you try with KSP 2.2.20-2.0.4-SNAPSHOT from maven("https://central.sonatype.com/repository/maven-snapshots/") and report any further issues. It's just a nightly build but give it a try to see if the issue persists.

[artroman]

Hi, Could you try with KSP 2.2.20-2.0.4-SNAPSHOT from maven("https://central.sonatype.com/repository/maven-snapshots/") and report any further issues. It's just a nightly build but give it a try to see if the issue persists.

Yes, after troubleshooting plugin download speed issue, I haven't got any errors with SQLDelight, build was successful.
I had issue with ksp 2.2.20-2.0.3, but it was OK with 2.2.20-2.0.2.

[spheroid]

I was able to get it working with protobuf using 2.2.20-2.0.2, 2.0.4-SNAPSHOT produces the same error as 2.0.3.

[artroman]

Correction: 2.2.20-2.0.4-SNAPSHOT works in a kotlin.multiplatform project (structually it's a single-module project), and the :app:generateCommonMainVirtualAppDbInterface task runs before the :app:kspDebugKotlinAndroid task.

But the same 2.2.20-2.0.4-SNAPSHOT gives an error on a usual android project with several modules. Here the :shared:generateDebugVirtualAppDbInterface task runs after :shared:kspDebugKotlin task that is already FAILED.

[alexmirash]

Hi, Could you try with KSP 2.2.20-2.0.4-SNAPSHOT from maven("https://central.sonatype.com/repository/maven-snapshots/") and report any further issues. It's just a nightly build but give it a try to see if the issue persists.

Thank you. Unfortunaltelly "2.2.20-2.0.4-SNAPSHOT" doesn't resolve the issue and the same error message is shown.

some key configurations:
AndroidStudio project
toml
[versions]
kotlin = "2.2.20"
ksp = "2.2.20-2.03"/"2.2.20-2.0.4-SNAPSHOT" (2.2.20-2.0.2 is currently used because it produces no build issues)
protobufJavalite = "4.32.1"
protobuf = "0.9.5"
androidGradlePlugin = "8.13.0"
...

[libraries]
protobuf-javalite = { module = "com.google.protobuf:protobuf-javalite", version.ref = "protobufJavalite" }
...

[plugins]
devtoolsKsp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
protobuf = { id = "com.google.protobuf", version.ref = "protobuf" }
...

build.gradle.kts
...
protobuf {
protoc {
artifact = "com.google.protobuf:protoc:${libs.versions.protobufJavalite.get()}"
}
generateProtoTasks {
all().configureEach {
plugins {
create("java") {
option("lite")
}
}
}
}
}
...

gradle: distributionUrl=https://services.gradle.org/distributions/gradle-9.0.0-bin.zip

[inorichi]

I've bisected the issue (7a44b58 did not fix the problem) with this patch:

diff --git a/integration-tests/src/test/resources/playground-android/settings.gradle.kts b/integration-tests/src/test/resources/playground-android/settings.gradle.kts
index 3ecdc0dd..07915a76 100644
--- a/integration-tests/src/test/resources/playground-android/settings.gradle.kts
+++ b/integration-tests/src/test/resources/playground-android/settings.gradle.kts
@@ -8,6 +8,7 @@ pluginManagement {
         kotlin("jvm") version kotlinVersion apply false
         kotlin("android") version kotlinVersion apply false
         id("com.android.application") version agpVersion apply false
+        id("app.cash.sqldelight") version "2.0.2" apply false
     }
     repositories {
         maven(testRepo)
diff --git a/integration-tests/src/test/resources/playground-android/workload/build.gradle.kts b/integration-tests/src/test/resources/playground-android/workload/build.gradle.kts
index 5eb45a17..d6aaf3b0 100644
--- a/integration-tests/src/test/resources/playground-android/workload/build.gradle.kts
+++ b/integration-tests/src/test/resources/playground-android/workload/build.gradle.kts
@@ -5,6 +5,7 @@ plugins {
     id("com.google.devtools.ksp")
     id("com.android.application")
     kotlin("android")
+    id("app.cash.sqldelight")
 }

 version = "1.0-SNAPSHOT"

And the first bad commit is 2d4e511

I also tried to reproduce with similar patches on JVM (because of the other issue which is very similar to this one) but I couldn't reproduce it.

[hfmehmed]

I have uploaded a new nightly snapshot. Could you try with KSP 2.2.20-2.0.4-SNAPSHOT from maven("https://central.sonatype.com/repository/maven-snapshots/") and report any further issues. Pass --refresh-dependencies to Gradle command if you already tried this in order to re-download the binaries.

[spheroid]

Works on my machine with the latest SNAPSHOT!

[inorichi]

Our android project with +300 modules and several plugins applied also compiles fine with the latest SNAPSHOT

[alexmirash]

latest KSP 2.2.20-2.0.4-SNAPSHOT works for me. Thank you!

[artroman]

Yes, new SNAPSHOT is works well for both Android and Kotlin Multiplatform projects.

[anhtuanmai]

I still reproduced the bug using the latest Snapshot

Context :
Android Studio Narwhal 3 Feature Drop | 2025.1.3
OS : Ubuntu
JVM_17

libs.versions.toml

androidGradlePlugin = "8.12.2"
kotlin = "2.2.20"
ksp = "2.2.20-2.0.4-SNAPSHOT"
protobuf = "4.32.1"
protobufPlugin = "0.9.5"

gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip

I tried some other combinations but they do not work as well.

Reason: Task ':data:kspDebugKotlin' uses this output of task ':data:generateDebugProto' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.

[hfmehmed]

@anhtuanmai do you happen to have a reproducer for this, i can look into this.