Add sbt-version-policy

Author: julienrf

README.md

@@ -30,6 +30,7 @@ The plugin also brings in
   - sbt-header to automate copyright header maintenance
   - sbt-mima-plugin to maintain binary compatibility
   - sbt-osgi, if enabled with `scalaModuleOsgiSettings`
+  - sbt-version-policy to check the versioning policy
 
 ## Usage
 
@@ -53,7 +54,7 @@ name         := "<module name>"
 repoName     := "<GitHub repo name>" // the repo under github.com/scala/, only required if different from name
 organization := "<org>"              // only required if different from "org.scala-lang.modules"
 
-scalaModuleMimaPreviousVersion := Some("1.0.0") // enables MiMa (`None` by default, which disables it)
+versionPolicyIntention := Compatibility.BinaryAndSourceCompatible // enables MiMa (`Compatibility.None` by default, which disables it)
 
 OsgiKeys.exportPackage := Seq(s"<exported package>;version=${version.value}")
 
@@ -77,7 +78,7 @@ The following settings are also available:
 
 ## Set up tag-based publishing
 
-The instructions here are a summary of the readme in https://github.com/olafurpg/sbt-ci-release
+The instructions here are a summary of the readme in https://github.com/olafurpg/sbt-ci-release and https://github.com/scalacenter/sbt-version-policy
 
   - Create a fresh GPG key: `gpg --gen-key`
     - Real name: use "project-name bot"
@@ -97,3 +98,5 @@ The instructions here are a summary of the readme in https://github.com/olafurpg
       - ubuntu: `gpg --armor --export-secret-keys $LONG_ID | base64 -w0`
     - `SONATYPE_PASSWORD`: need that one
     - `SONATYPE_USERNAME`: that one too
+
+  - Run `versionCheck` in the publishing process: `sbt versionCheck ci-release`

build.sbt

@@ -9,6 +9,6 @@ developers          := List(Developer("", "", "", url("https://scala-lang.org"))
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.6")
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.6.0")
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.9.2")
 addSbtPlugin("com.dwijnand" % "sbt-travisci" % "1.2.0")   // set scalaVersion and crossScalaVersions
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7") // set version, scmInfo, publishing settings
+addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "1.2.1")

src/main/scala/ScalaModulePlugin.scala

@@ -1,22 +1,19 @@
 package com.lightbend.tools.scalamoduleplugin
 
 import com.typesafe.sbt.osgi.{OsgiKeys, SbtOsgi}
-import com.typesafe.tools.mima.plugin.MimaKeys._
-import com.typesafe.tools.mima.plugin.MimaPlugin
 import de.heikoseeberger.sbtheader.HeaderPlugin.autoImport.{HeaderLicense, headerLicense}
 import sbt.Keys._
 import sbt._
-import sbt.internal.librarymanagement.IvySbt
-import sbt.librarymanagement.ivy.IvyDependencyResolution
-import sbt.librarymanagement.{UnresolvedWarningConfiguration, UpdateConfiguration}
 import sbtdynver.DynVerPlugin
 import sbtdynver.DynVerPlugin.autoImport.dynverGitDescribeOutput
 import xerial.sbt.Sonatype.autoImport.{sonatypeProfileName, sonatypeSessionName}
+import sbtversionpolicy.SbtVersionPolicyPlugin.autoImport.{Compatibility, versionPolicyCheck, versionPolicyIntention}
 
 object ScalaModulePlugin extends AutoPlugin {
   object autoImport {
     val scalaModuleRepoName = settingKey[String]("The name of the repository under github.com/scala/.")
     val scalaModuleAutomaticModuleName = settingKey[Option[String]]("Automatic-Module-Name setting for manifest")
+    @deprecated("Previous version is now automatically computed by sbt-version-policy. Setting this key has no effect", "2.4.0")
     val scalaModuleMimaPreviousVersion = settingKey[Option[String]]("The version of this module to compare against when running MiMa.")
     val scalaModuleEnableOptimizerInlineFrom = settingKey[String]("The value passed to -opt-inline-from by `enableOptimizer` on 2.13 and higher.")
   }
@@ -167,47 +164,21 @@ object ScalaModulePlugin extends AutoPlugin {
   // a setting-transform to turn the regular version into something osgi can deal with
   private val osgiVersion = version(_.replace('-', '.'))
 
-  // adapted from https://github.com/lightbend/migration-manager/blob/0.3.0/sbtplugin/src/main/scala/com/typesafe/tools/mima/plugin/SbtMima.scala#L112
-  private def artifactExists(organization: String, name: String, scalaBinaryVersion: String, version: String, ivy: IvySbt, s: TaskStreams): Boolean = {
-    val moduleId = ModuleID(organization, s"${name}_$scalaBinaryVersion", version)
-    val depRes = IvyDependencyResolution(ivy.configuration)
-    val module = depRes.wrapDependencyInModule(moduleId)
-    val updateConf = UpdateConfiguration() withLogging UpdateLogging.DownloadOnly
-    val reportEither = depRes.update(module, updateConf, UnresolvedWarningConfiguration(), s.log)
-    reportEither.fold(_ => false, _ => true)
-  }
-
-  // Internal task keys for the MiMa settings
-  private val canRunMima       = taskKey[Boolean]("Decides if MiMa should run.")
-  private val runMimaIfEnabled = taskKey[Unit]("Run MiMa if mimaPreviousVersion and the module can be resolved against the current scalaBinaryVersion.")
+  // Internal task keys for the versionPolicy settings
+  private val runVersionPolicyCheckIfEnabled = taskKey[Unit]("Run versionPolicyCheck if versionPolicyIntention is not set to Compatibility.None.")
 
   private lazy val mimaSettings: Seq[Setting[_]] = Seq(
-    scalaModuleMimaPreviousVersion := None,
-
-    // We're not using `%%` here in order to support both jvm and js projects (cross version `_2.12` / `_sjs0.6_2.12`)
-    mimaPreviousArtifacts := scalaModuleMimaPreviousVersion.value.map(v => organization.value % moduleName.value % v cross crossVersion.value).toSet,
-
-    canRunMima := {
-      val log = streams.value.log
-      scalaModuleMimaPreviousVersion.value match {
-        case None =>
-          log.warn("MiMa will NOT run because no mimaPreviousVersion is provided.")
-          false
-        case Some(mimaVer) =>
-          val exists = artifactExists(organization.value, name.value, scalaBinaryVersion.value, mimaVer, ivySbt.value, streams.value)
-          if (!exists)
-            log.warn(s"""MiMa will NOT run because the previous artifact "${organization.value}" % "${name.value}_${scalaBinaryVersion.value}" % "$mimaVer" could not be resolved (note the binary Scala version).""")
-          exists
-      }
-    },
+    versionPolicyIntention := Compatibility.None,
 
-    runMimaIfEnabled := Def.taskDyn({
-      if (canRunMima.value) Def.task { mimaReportBinaryIssues.value }
-      else Def.task { () }
+    runVersionPolicyCheckIfEnabled := Def.taskDyn({
+      if (versionPolicyIntention.value != Compatibility.None) Def.task { versionPolicyCheck.value }
+      else Def.task {
+        streams.value.log.warn("versionPolicyCheck will NOT run because versionPolicyIntention is set to Compatibility.None.")
+      }
     }).value,
 
     Test / test := {
-      runMimaIfEnabled.value
+      runVersionPolicyCheckIfEnabled.value
       (Test / test).value
     }
   )