Bincompat problem with derivation in 0.14.4 on Scala 3

[ybasket]

Hey,
first of all: Thank you for the library and the huge step forward #1800 brought. I found an issue with bincompat though:
If code using generic derivation on Scala 3 was compiled against an earlier 0.14 version of circe (in my case sttp-apispec), using it together with the new 0.14.4 may throw a NoSuchMethodError:

java.lang.NoSuchMethodError: 'scala.collection.Iterable io.circe.DerivedEncoder.encodedIterable$(io.circe.DerivedEncoder, scala.Product)'

The reason for that is that encodedIterable was not inline and got removed in #1800 (DerivedEncoder was kept package-private, but not the methods). Similar goes for DerivedDecoder, it has also a bunch of methods that are now removed.

Looking forward, one could (probably) either bring those back for bincompat and remove them in 0.15 or accept the breakage and ideally add a warning to the release notes.

[ahjohannessen]

I got the same issue 👍 for the fix

[zarthross]

Thanks for letting us know and for submitting the PR, we are looking into it.