Nice! I've been interested in this as well as @lolgab. Now that Native supports Scala 3 I'm hoping that more of the ecosystem will adopt, including scodec. All of that is basically blocked from here:

• Onwards and upwards typelevel/scalacheck#879

Is it reasonable to publish a native version without support for refined and scodec (temporarily)?

It is reasonable. It is also reasonable to publish without Scala 3. But, we are so close! Let's do it right, and put our energy into driving this from the bottom up. For example, I just added support for shared source folder e.g. js-native so that you don't have to copy files like you did here.

• Add support for partially-shared source directories portable-scala/sbt-crossproject#145 (review)

Sure thing, whatever you think is best!

BTW I just pushed a fix and sbt validateNative seems to work now, so I think there aren't many unknowns left.

It looks like the upstream efforts are stalled. Do you think it's worth pushing something out without scodec-bits, Scala 3, or refined?

Depends what you mean by pushing something out :) I'd say upstreams and circe are moving at roughly the same pace e.g. see #1933.

Heh, good question. I think what I meant was to submit a PR like this one if I can figure out a way to simply exclude the non-native-ready parts of the code from the native build. I know it's not great practice to have the native build support less functionality than the JVM/JS builds, but it's also better than nothing.

Good morning, just adding here that scodec-bits Scala Native support has been merged: scodec/scodec-bits#373

Cats is now published for Native on Scala 2.12, 2.13, 3. So Circe should be able to do the same.

https://github.com/typelevel/cats/releases/tag/v2.8.0

Note that my build changes in #1968 will make configuring the build for Native very easy.

@adampauls were you ever actually able to run the tests? I started looking into this myself and it seems that Native is missing CopyOnWriteArrayList. This should be ported to Scala Native from Scala.js before we can move ahead. Would be fantastic if you (or any motivated on-lookers) can take that on. It should be a very easy PR, just copy the sources and the tests from Scala.js to Scala Native. Thank you!

https://github.com/scala-js/scala-js/blob/33ed7588ad80eaff5802aaf3b6f620b408a200cd/javalib/src/main/scala/java/util/concurrent/CopyOnWriteArrayList.scala

I am on vacation at the moment but can try to do it soon!

I already opened scala-native/scala-native#2725. I'm sorry, I missed the fact that it was on your checklist you made in March. Fixing this should have been # 1 priority since it affects the Circe Core module and requires a change in Scala Native itself. We will be blocked until the next Scala Native release unfortunately.

For anyone who wants to play around I've published a bootleg snapshot of Circe Native.
https://s01.oss.sonatype.org/content/repositories/snapshots/com/armanbilge/circe-core_native0.4_3/0.14.2-87-a48d472-SNAPSHOT/

I now have a PR up at #2017.

Superseded by 2017