Add Function To Check All Relevant MiMa Versions (#2265)

* Add Function To Check All Relevant MiMa Versions

* Fix Incorrectly Assumed Patch Equivalence, Add Safety Nets

* Fix Returned List Rather than Set

build.sbt

@@ -204,11 +204,48 @@ lazy val docSettings = Seq(
   includeFilter in Jekyll := (includeFilter in makeSite).value
 )
 
-lazy val binaryCompatibleVersions = Set("1.0.0", "1.1.0")
+def mimaSettings(moduleName: String) = {
+  import sbtrelease.Version
+
+  def semverBinCompatVersions(major: Int, minor: Int, patch: Int): Set[(Int, Int, Int)] = {
+    val majorVersions: List[Int] = List(major)
+    val minorVersions : List[Int] = 
+      if (major >= 1) Range(0, minor).inclusive.toList
+      else List(minor)
+    def patchVersions(currentMinVersion: Int): List[Int] = 
+      if (minor == 0 && patch == 0) List.empty[Int]
+      else if (currentMinVersion != minor) List(0)
+      else Range(0, patch - 1).inclusive.toList
+
+    val versions = for {
+      maj <- majorVersions
+      min <- minorVersions
+      pat <- patchVersions(min)
+    } yield (maj, min, pat)
+    versions.toSet
+  }
 
-def mimaSettings(moduleName: String) = Seq(
-  mimaPreviousArtifacts := binaryCompatibleVersions.map(v => "org.typelevel" %% moduleName % v)
-)
+  def mimaVersions(version: String): Set[String] = {
+    Version(version) match {
+      case Some(Version(major, Seq(minor, patch), _)) =>
+        semverBinCompatVersions(major.toInt, minor.toInt, patch.toInt)
+          .map{case (maj, min, pat) => s"${maj}.${min}.${pat}"}
+      case _ =>
+        Set.empty[String]
+    }
+  }
+  // Safety Net For Exclusions
+  lazy val excludedVersions: Set[String] = Set()
+
+  // Safety Net for Inclusions
+  lazy val extraVersions: Set[String] = Set()
+
+  Seq(
+    mimaPreviousArtifacts := (mimaVersions(version.value) ++ extraVersions)
+      .filterNot(excludedVersions.contains(_))
+      .map(v => "org.typelevel" %% moduleName % v)
+  )
+} 
 
 lazy val docs = project
   .enablePlugins(MicrositesPlugin)