A modern programming language that makes developers happier.

kotlinlang

Do I need to provide any further information? Or should I add a bounty? I've been trying forever, but maybe it just won't work

where did you put your protocolbuff file?

Everywhere :stuck_out_tongue: /src/res/proto, /src/commonMain/, /src/commonMain/com/testproject/

(ie: `&lt;our module&gt;/src/main/proto `)

and to be seen by intelliJ as source folder:
```
sourceSets {
    getByName("main").java.srcDirs(
        "src/main/proto",
        file("${protobuf.protobuf.generatedFilesBaseDir}/main/java")
    )
}
```

It gives me an error :disappointed:
```
  Line 115:         getByName("commonMain").java.srcDirs(
                                            ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: 
                                                public val &lt;T&gt; KClass&lt;???&gt;.java: Class&lt;???&gt; defined in kotlin.jvm
                                                public val Project.java: JavaPluginConvention defined in org.gradle.kotlin.dsl
                                                public val PluginDependenciesSpec.java: PluginDependencySpec defined in org.gradle.kotlin.dsl
```

`.proto`does refer to ProtobufSourceDirectorySet. But can't get it to work either:
```
    sourceSets.apply {
getByName("commonMain").proto.srcDirs(
            "src/main/proto",
            file("${protobuf.protobuf.generatedFilesBaseDir}/main/java")
```

```
 Line 115:         getByName("commonMain").proto.srcDirs(
                                            ^ Function invocation 'proto(...)' expected

  Line 115:         getByName("commonMain").proto.srcDirs(
                                            ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: 
                                                public fun SourceSet.proto(action: ProtobufSourceDirectorySet.() -&gt; Unit): Unit defined in com.google.protobuf.gradle
```

I feel like this is the function i need to use, from the extension, but I jus tdont know how:
```
fun SourceSet.proto(action: ProtobufSourceDirectorySet.() -&gt; Unit) {
    (this as? ExtensionAware)
        ?.extensions
        ?.getByType(ProtobufSourceDirectorySet::class.java)
        ?.apply(action)
}
```

I tried the examples, I used sourceSets without `apply`, all no luck (<https://github.com/googleapis/gapic-generator-kotlin/blob/58ce58c725ae8ab63fd3834a28866a9fdf73df68/example-api-cloud-clients/build.gradle.kts>)
It really seems to have to do with the project being multiplatform/no java?

The code is just to add the folder as source director in IntelliJ. Maybe you can try without. Just put your protobuf file into SRC/main/protobuf

<https://github.com/kenzierocks/reticulated-audio-wranglin-regulator/blob/master/common-protobuf/build.gradle.kts> is my protobuf build file

you can see some of the helpers I added to improve the use of protobuf with Kotlin DSL as well