value `versionReconciliation` not found in set

Question

I have an existing Scala with sbt project. Sbt version 1.4.7. I want to make dependencies check more strict according to next article: https://www.scala-lang.org/2019/10/17/dependency-management.html

I've added the next configuration to my build.sbt:

versionReconciliation ++= Seq(
  "org.typelevel" %% "cats-core" % "relaxed", // "semver" reconciliation is also available
  "*" % "*" % "strict"
)

But got the error: error: not found: value versionReconciliation

My plugins.sbt is empty. sbt installed via Sdkman

Answer 1

As the document you references states, to use this way you need to use sbt-coursier, i.e. you need to add addSbtPlugin("io.get-coursier" % "sbt-coursier" % "2.0.0-RC6-8") to be able to use versionReconciliation. Without the plugin you should be able to use the conflictManager key.