Unresolved reference: protoc - when using Gradle + Protocol Buffers - kotlin

Question

I have a gradle project which uses the Kotlin DSL
build.gradle.kts
plugins {
kotlin("jvm") version "1.4.21"
id("com.google.protobuf") version "0.8.10"
}
group = "schema"
version = "0.0.1-SNAPSHOT"
repositories {
mavenCentral()
}
protobuf {
protoc {
artifact = "com.google.protobuf:protoc:3.0.0"
}
}
schema.proto
syntax = "proto3";
package schema;
message Message {
string content = 1;
string date_time = 2;
}
and project structure
schema
-src/main/proto/schema.proto
-build.gradle.kts
Whenever I run gradle build I get error:
FAILURE: Build failed with an exception.
* Where:
Build file '/Users/x/schema/build.gradle.kts' line: 13
* What went wrong:
Script compilation errors:
Line 15: protoc {
^ Unresolved reference: protoc
Line 16: artifact = "com.google.protobuf:protoc:3.0.0"
^ Unresolved reference: artifact
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 8s
The only thing I am doing different to various tutorials is using the Gradle Kotlin DSL. What am I doing wrong?

Answer 1

I think this is happening because you are referencing a single task within the protobuf gradle plugin. Try importing the whole bundle to make use of type-safe accessors as you desired.
import com.google.protobuf.gradle.*

Answer 2

For whatever reason this works
import com.google.protobuf.gradle.protoc
protobuf {
protobuf.protoc {
artifact = "com.google.protobuf:protoc:3.0.0"
}
}
It seems a little ugly having to specify protobuf twice mind