drop linting

project/LintingPlugin.scala

@@ -1,20 +0,0 @@
-import sbt.Keys._
-import sbt._
-import scalafix.sbt.ScalafixPlugin.autoImport._
-
-object LintingPlugin extends AutoPlugin {
-  override def trigger = allRequirements
-
-  override val globalSettings =
-    addCommandAlias("fmt", "; scalafmtSbt; scalafmtAll") ++
-      addCommandAlias("fix", "scalafixAll")
-
-  override val projectSettings =
-    inThisBuild(
-      Seq(
-        scalafixDependencies += "com.github.liancheng" %% "organize-imports" % "0.5.0",
-        semanticdbEnabled := true,
-        semanticdbVersion := scalafixSemanticdb.revision
-      )
-    )
-}

project/Scala3Plugin.scala

@@ -0,0 +1,17 @@
+import sbt.Keys._
+import sbt._
+
+/**
+ * Automatically enriches projects with the following settings (despite the word "override").
+ */
+object Scala3Plugin extends AutoPlugin {
+
+  /**
+   * Thus plug-in will automatically be enabled; it has no requirements.
+   */
+  override def trigger: PluginTrigger = AllRequirements
+
+  override val buildSettings: Seq[Setting[_]] = Seq(
+    scalaVersion := "2.13.8",
+  )
+}