can't suppress / override synthetic companion .apply

[scabug]

I want a case class where the access to its constructors (including companion.apply) is private, or to not have the synthetic constructor created.

case class Foo private(x: Int)
object Foo {
  // apply not public
  def make(x: Int): Option[Foo] = ??? // public constructor
}

Adding or overriding Foo.apply causes "error: method apply is defined twice".

The only workaround I could find is to not use a case class; use a regular class, and define your own val, apply, unapply, toString, canEqual, equals, hashCode; seems unfortunate.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-9547?orig=1
Reporter: @refried
See #7884, #9425

[chrisandrews-ms]

Fixed in #10383?

[SethTisue]

indeed!