sbt plugin resolvers not adding sbtVersion, scalaVersion to artifactory url

Question

In an sbt project, I'm adding some plugins, like

addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.2")

This should resolve to an artifact url similar to this:

https://repo1.maven.org/maven2/org/typelevel/sbt-tpolecat_2.12_1.0/0.5.2/sbt-tpolecat_2.12_1.0-0.5.2.pom

But instead it is trying this url and fails:

[error] Error downloading org.typelevel:sbt-tpolecat;sbtVersion=1.0;scalaVersion=2.12:0.5.2
[error]   not found: https://repo1.maven.org/maven2/org/typelevel/sbt-tpolecat/0.5.2/sbt-tpolecat-0.5.2.pom

This is with Java 21.0.7, Scala 3.6.1 and sbt 1.11.2 on MacOS.

Where did you add that line? What is your sbt version? Which command did you run? — Luis Miguel Mejía Suárez
– Luis Miguel Mejía Suárez, Commented Jul 2 at 20:50

Dmytro Mitin · Accepted Answer · 2025-07-03 13:00:54Z

Please double check that you're adding the line addSbtPlugin(...) to the file project/plugins.sbt (or project/build.sbt), not root build.sbt, i.e. to a build file of the meta-project, not to a build file of the project itself: sbt is recursive.

addSbtPlugin(...) is actually a wrapper over libraryDependencies += ...

  /**
   * Adds `dependency` as an sbt plugin for the sbt and Scala versions configured by
   * `sbtBinaryVersion` and `scalaBinaryVersion` scoped to `update`.
   */
  def addSbtPlugin(dependency: ModuleID): Setting[Seq[ModuleID]] =
    libraryDependencies += {
      val sbtV = (pluginCrossBuild / sbtBinaryVersion).value
      val scalaV = (update / scalaBinaryVersion).value
      sbtPluginExtra(dependency, sbtV, scalaV)
    }

https://github.com/sbt/sbt/blob/v1.11.2/main/src/main/scala/sbt/Defaults.scala#L4587-L4596

If you're sure that the issue is that in the url https://repo1.maven.org/maven2/org/typelevel/sbt-tpolecat/0.5.2/sbt-tpolecat-0.5.2.pom (vs correct https://repo1.maven.org/maven2/org/typelevel/sbt-tpolecat_2.12_1.0/0.5.2/sbt-tpolecat_2.12_1.0-0.5.2.pom) the suffix _2.12_1.0 is not added then you can try

libraryDependencies += "org.typelevel" % "sbt-tpolecat_2.12_1.0" % "0.5.2"

in project/plugins.sbt (that's what addSbtPlugin is supposed to do).

Yes, thank you, I've been adding the suffix to my plugins as a workaround, but I found the source issue, please see below.

javierhe · Accepted Answer · 2025-07-03 18:36:11Z

2

Turns out that I run a scala-cli command some days ago to set the default repository to some internal url... something like:

scala-cli config --power repositories.default https://<internal_url>

For some reason that seems to mess with the resolver pattern, and also messed with the repository mirrors. I went to the actual config file at ~/Library/Application Support/ScalaCli/secrets/config.json and commented out the setting, that fixed it.

answered Jul 3 at 18:36

javierhe

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