`BuildConfig` values are not available during annotation process after upgrading ksp from 2.2.10-2.0.2 -> 2.2.20-2.0.3

[RoarGronmo]

My post in issuetracker: https://issuetracker.google.com/444480432

Thought it was an error in AS first, but it seems to have something to do with the annotation processing not being able to read BuildConfig values in ksp v2.2.20-2.0.3. This works as expected in v2.2.10-2.0.2.

Where did it appear ?
In a @Database annotation (like this one)

@Database(
        entities = [
            UserEntity::class,
...
            AssignmentControlFormCheckPointDataEntity::class,
        ],
        autoMigrations = [
            AutoMigration(from = 163, to=169),
...
            AutoMigration(from = 190, to=200)
        ],
        version = BuildConfig.APPDATABASEVERSION, //<-- Reading values defined in gradle 
        exportSchema = true
)

Error message during compile:

How is it defined in the gradle file ?
Below is just the android part of the app's build.gradle.kts

android {
    namespace = "no.norva24.mslam"

    //Signing configs in this app

    signingConfigs {
        //create("debug")
        create("release")
    }

    //Signing keys
    if(project.hasProperty("AndroidProject.signing") &&
        File(project.property("AndroidProject.signing").toString()).exists()
    ) {
        val props = Properties()
        val propFile = File(project.property("AndroidProject.signing").toString())
        if(propFile.canRead())
        {
            props.load(FileInputStream(propFile))

            if(props.containsKey("RELEASE_STORE_FILE") &&
                    props.containsKey("RELEASE_STORE_PASSWORD") &&
                    props.containsKey("RELEASE_KEY_ALIAS") &&
                    props.containsKey("RELEASE_KEY_PASSWORD") &&
                    props.containsKey("DEBUG_STORE_FILE") &&
                    props.containsKey("DEBUG_STORE_PASSWORD") &&
                    props.containsKey("DEBUG_KEY_ALIAS") &&
                    props.containsKey("DEBUG_KEY_PASSWORD"))
            {
                signingConfigs.getByName("release").apply{
                    storeFile = file(props["RELEASE_STORE_FILE"] as String)
                    storePassword = props["RELEASE_STORE_PASSWORD"] as String
                    keyAlias = props["RELEASE_KEY_ALIAS"] as String
                    keyPassword = props["RELEASE_KEY_PASSWORD"] as String
                }
                signingConfigs.getByName("debug").apply {
                    storeFile = file(props["DEBUG_STORE_FILE"] as String)
                    storePassword = props["DEBUG_STORE_PASSWORD"] as String
                    keyAlias = props["DEBUG_KEY_ALIAS"] as String
                    keyPassword = props["DEBUG_KEY_PASSWORD"] as String
                }

            }
            else
            {
                throw Exception("Missing properties in: ${propFile.toPath()}")
            }

        }
        else
        {
            throw FileNotFoundException("Property file not found: ${propFile.toPath()}")
        }
    }

    //Maps properties file

    val mapProps = Properties()

    if(file("../maps.properties").exists())
    {
        file("../maps.properties").inputStream().use {mapProps.load(it)}
    }



    //Versioning, file for build#

    val versionPropsFile = file("version.properties")

    val versionMajor = 0 //Increment manually when public release ready
    val versionMinor = 13 //Increment manually, we have begun level 12 - schema registering
    val versionPrep = 194 //Increment manually for each public release //TODO: Remember to activate crashlytics !
    val versionAppDatabase = 200 //Increment manually for each db entity change
    var versionBuild:Int //Increments automatically from file

    if(versionPropsFile.canRead()) {
        val versionProps = Properties()
        versionProps.load(FileInputStream(versionPropsFile))
        versionBuild = versionProps["VERSION_BUILD"]?.toString()?.toInt() ?: 0
    } else {
        throw FileNotFoundException("Could not read version.properties !")
    }

    val autoIncrementBuildNumber = {
        if(versionPropsFile.canRead()) {
            val versionProps = Properties()
            versionProps.load(FileInputStream(versionPropsFile))
            versionBuild = versionProps["VERSION_BUILD"]?.toString()?.toInt()?.plus(1)?:0
            versionProps["VERSION_BUILD"] = versionBuild.toString()
            versionProps.store(versionPropsFile.writer(), null)
        } else {
            throw FileNotFoundException("Could not read/write version.properties!")
        }
    }


    class BuildNumberIncrementer : TaskExecutionGraphListener {
        override fun graphPopulated(taskGraph: TaskExecutionGraph) {
            if (taskGraph.hasTask(":app:extractApksForDebug") ||
                taskGraph.hasTask(":app:assembleDebug") ||
                taskGraph.hasTask(":app:assembleRelease") ||
                taskGraph.hasTask(":app:bundleRelease")
            ) {
                autoIncrementBuildNumber()
            }
        }
    }

    gradle.taskGraph.addTaskExecutionGraphListener(BuildNumberIncrementer())

    compileSdk = 36


    defaultConfig {
        applicationId = "no.norva24.mslam"
        minSdk = 29
        targetSdk = 36
        versionCode = versionPrep
        versionName = "$versionMajor.$versionMinor.$versionCode.$versionAppDatabase.$versionBuild"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"

        buildConfigField("long","TIMESTAMP", "${System.currentTimeMillis()}L")
        buildConfigField("int","APPDATABASEVERSION",versionAppDatabase.toString())


    }




    buildTypes {
        getByName("release") {
            isMinifyEnabled = true
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
            resValue("string","google_maps_key",mapProps.getProperty("MAPS_API_KEY", ""))
        }
        getByName("debug") {
            resValue("string","google_maps_key",mapProps.getProperty("MAPS_API_KEY"," "))
        }
    }


    packaging {
        resources {
            excludes += setOf(
                "META-INF/DEPENDENCIES",
                "META-INF/versions/9/previous-compilation-data.bin"
            )
        }
    }
    //packagingOptions.resources.excludes.add('META-INF/versions/9/previous-compilation-data.bin')


    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_21
        targetCompatibility = JavaVersion.VERSION_21
    }
 
    buildFeatures {
        buildConfig = true
        dataBinding = true
        viewBinding = true
        compose = true
        resValues = true
    }
}

This value isn't available during the annotation process in 2.2.20-2.0.3 but is available in 2.2.10-2.0.2:

Other of theese values, such as BuildConfig.TIMESTAMP is available throughout the compilation process, but not in annotations either.

[RoarGronmo]

Note !

It seems that v2.2.20-2.0.2 also works as expected, it is just failing in v2.2.20-2.0.3.

[Jean-Daniel]

Not only BuildConfig, but all sources generated by AGP, like ViewBinding.

[eboudrant]

I can confirm, it also impact projects with Apollo GQL codegen.

[hfmehmed]

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.

[RoarGronmo]

Somehow the KSP version you mentioned isn't available from that maven, i got those error messages shown below.

Or is it something I have not defined correctly here ?

[hfmehmed]

I can see the artifacts are still in the repository (https://central.sonatype.com/repository/maven-snapshots/com/google/devtools/ksp/com.google.devtools.ksp.gradle.plugin/2.2.20-2.0.4-SNAPSHOT/maven-metadata.xml)

Maybe you need to add maven("https://central.sonatype.com/repository/maven-snapshots/") repository to some other place in your build files?

[RoarGronmo]

I use standard methods for android here according to repositories in (project).build.gradle.kts:

I think I should see similar (or at least have access to something similar) from central.sonatype.com/repository/maven-snapshots/ ?
This is from repo1.maven.org/maven2/:

When entering this link (https://central.sonatype.com/repository/maven-snapshots/com/google/devtools/ksp/), I should expect to see some files or folders, but no...

Following that link, I am lost...

Any other suggestions ?

[hfmehmed]

What configuration do you have in settings.gradle.kts? If there is pluginManagement{} block there with repositories, try adding maven("https://central.sonatype.com/repository/maven-snapshots/") there as well

[hfmehmed]

In other words, anywhere you have repositories {} block in the codebase, please add maven("https://central.sonatype.com/repository/maven-snapshots/")

[jisungbin]

@hfmehmed Hello, thank you for the quick fix. Unfortunately, this issue is not resolved in 2.0.4-SNAPSHOT. In my project, KSP still cannot find the classes generated by androidx.databinding.

[hfmehmed]

Do you happen to have a project ready at hand that you can share that reproduces this issue?

[jisungbin]

@hfmehmed It was easy to reproduce. Could you check out this repository? https://github.com/jisungbin/ksp-2597-repro

[est7]

which version is currently available, I can't find the "dataBindingGenBaseClasses" task with 2.2.20-2.0.2 either.

[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.