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Protocol Buffer Compiler for Scala

Migrating from sbt-scalapb to sbt-protoc

In project/scalapb.proto or project/plugins.proto, remove the library dependency on sbt-scalapb.

Add sbt-protoc plugin:

addSbtPlugin("com.thesamet" % "sbt-protoc" % "0.99.12")

If you had a dependency on protoc-jar it can be removed, since it is now provided through sbt-protoc.

In build.sbt:

Remove this line:

import com.trueaccord.scalapb.{ScalaPbPlugin => PB}

Remove this line:


If you set up protoc-jar, you can also remove this setting, since this is the default:

PB.runProtoc in PB.protobufConfig := (args =>
  com.github.os72.protocjar.Protoc.runProtoc("-v300" +: args.toArray))

Add a value to gen.targets:

PB.targets in Compile := Seq(
  scalapb.gen() -> (sourceManaged in Compile).value

If you need Java Conversions, flat packages, etc see ScalaPB SBT Settings.

If you are using files like scalapb.proto and Google’s well-known proto change the library dependency from:

"com.trueaccord.scalapb" %% "scalapb-runtime" % "0.6.6" % PB.protobufConfig


"com.trueaccord.scalapb" %% "scalapb-runtime" % com.trueaccord.scalapb.compiler.Version.scalapbVersion % "protobuf"