Can't derive Diff for a case class with all default arguments

Example:

import com.softwaremill.diffx.Diff

// both args have defaults:
case class Buh(
  a: String = "",
  b: Int = 1
)

// fails
Diff[Buh]

Here is a runnable snippet: https://scastie.scala-lang.org/kKEQ1SZzTmudSGJGvO5BGg

This broke with the Magnolia version upgrade: https://github.com/softwaremill/diffx/pull/93

I tried overriding Magnolia version to the latest, but it didn’t help. Using latest Diffx with overriden Magnolia 0.12.8 does work.

So I know it’s a problem with Magnolia, but I thought it’s worth reporting here first. Let me know if I should report it there instead.

[ghostbuster91]

@laughedelic Lol,I didn’t expect that 😃 Sure, new release is rolling…

[ghostbuster91]

Hi,

Thanks for reporting. I’ve just released new version 0.3.26 with updated magnolia, so it should be available in maven central within a couple of hours.