Update to sbt 1.10.0, Scala 2.13.14

Author: dj707chen

.gitignore

@@ -0,0 +1,16 @@
+target/
+.bsp/
+.idea/
+# vim
+*.sw?
+
+# Ignore [ce]tags files
+tags
+
+# Metals
+.metals
+.bloop
+metals.sbt
+.vscode 
+
+.DS_Store

README.md

@@ -1,6 +1,6 @@
-### An example SBT project which uses macros (Scala 2.11, SBT 0.13)
+### An example SBT project which uses macros (Was created for Scala 2.11, SBT 0.13, updated to Scala 2.13.14, sbt 1.10.0)
 
-To verify that everything works fine, do `sbt run`.
+To verify that everything works fine, do `sbt runMy`.
 
 Note that currently SBT doesn't support recompilation of macro clients if the dependencies of the macro implementation have changed - macro clients are only recompiled when the macro definition itself is:  https://github.com/sbt/sbt/issues/399.
 

build.sbt

@@ -1,12 +1,17 @@
 name := "sbt-example"
 organization := "org.scalamacros"
-version := "2.0.0"
+version := "2.0.1"
 
-scalaVersion in ThisBuild := "2.11.8"
-run <<= run in Compile in core
+ThisBuild / scalaVersion := "2.13.14"
 
-lazy val macros = (project in file("macros")).settings(
+// this line is not valid in Scala 2.13 due to <<=, migrate according to https://www.scala-sbt.org/0.13/docs/Migrating-from-sbt-012x.html
+//run <<= run in Compile in core
+
+// alias is the way to go, now you can do: sbt runMy
+addCommandAlias("runMy", "core / Compile / run")
+
+lazy val macros = project in file("macros") settings(
  libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value
 )
 
-lazy val core = (project in file("core")) dependsOn macros
+lazy val core = project in file("core") dependsOn macros

core/src/main/scala/Test.scala

@@ -1,3 +1,3 @@
 object Test extends App {
-  Macros.hello
+  Macros.hello()
 }

macros/src/main/scala/Macros.scala

@@ -1,11 +1,11 @@
 import scala.language.experimental.macros
-import scala.reflect.macros.blackbox.Context
+import scala.reflect.macros.blackbox
 
 object Macros {
-  def impl(c: Context) = {
+  def impl(c: blackbox.Context)(): c.Expr[Unit] = {
     import c.universe._
     c.Expr[Unit](q"""println("Hello World")""")
   }
 
-  def hello: Unit = macro impl
+  def hello(): Unit = macro impl
 }

project/build.properties

@@ -1 +1 @@
-sbt.version=0.13.11
+sbt.version=1.10.0