Upgrade to 3.0.0-M2

Author: smarter

README.md

@@ -43,13 +43,13 @@ Any version number that starts with `0.` is automatically recognized as Dotty by
 the `sbt-dotty` plugin, you don't need to set up anything:
 
 ```scala
-scalaVersion := "3.0.0-M1"
+scalaVersion := "3.0.0-M2"
 ```
 
 #### Nightly builds
 If the latest release of Dotty is missing a bugfix or feature you need, you may
 wish to use a nightly build. Look at the bottom of
-https://repo1.maven.org/maven2/org/scala-lang/scala3-compiler_3.0.0-M1/ to find the version
+https://repo1.maven.org/maven2/org/scala-lang/scala3-compiler_3.0.0-RC1/ to find the version
 number for the latest nightly build. Alternatively, you can set `scalaVersion :=
 dottyLatestNightlyBuild.get` to always use the latest nightly build of dotty.
 

build.sbt

@@ -5,7 +5,7 @@ lazy val root = project
     description := "Example sbt project that compiles using Dotty",
     version := "0.1.0",
 
-    scalaVersion := "3.0.0-M1",
+    scalaVersion := "3.0.0-M2",
 
     useScala3doc := true,
   )

src/main/scala/MultiversalEquality.scala

@@ -2,23 +2,23 @@ import scala.language.strictEquality
 
 /**
   * Multiversal Equality: https://dotty.epfl.ch/docs/reference/contextual/multiversal-equality.html
-  * scala.Eq definition: https://github.com/lampepfl/dotty/blob/master/library/src/scala/Eql.scala
+  * scala.Eq definition: https://github.com/lampepfl/dotty/blob/master/library/src/scala/CanEqual.scala
   */
 object MultiversalEquality {
 
   def test: Unit = {
 
     // Values of types Int and String cannot be compared with == or !=,
     // unless we add the derived delegate instance like:
-    given Eql[Int, String] = Eql.derived
+    given CanEqual[Int, String] = CanEqual.derived
     println(3 == "3")
 
     // By default, all numbers are comparable, because of;
-    // implicit def eqlNumber: Eql[Number, Number] = derived
+    // given canEqualNumber as CanEqual[Number, Number] = derived
     println(3 == 5.1)
 
     // By default, all Sequences are comparable, because of;
-    // implicit def eqlSeq[T, U](implicit eq: Eql[T, U]): Eql[GenSeq[T], GenSeq[U]] = derived
+    // given canEqualSeq[T, U](using eq: CanEqual[T, U]) as CanEqual[Seq[T], Seq[U]] = derived
     println(List(1, 2) == Vector(1, 2))
 
     class A(a: Int)
@@ -29,8 +29,8 @@ object MultiversalEquality {
 
     // scala.language.strictEquality is enabled, therefore we need some extra delegate instances
     // to compare instances of A and B.
-    given Eql[A, B] = Eql.derived
-    given Eql[B, A] = Eql.derived
+    given CanEqual[A, B] = CanEqual.derived
+    given CanEqual[B, A] = CanEqual.derived
 
     println(a != b)
     println(b == a)