Add Scala 3 support

[SethTisue]

would a volunteer like to attempt this? it would be helpful even just to have a failing draft PR that shows where the next roadblock is, and then we could chip away it from there

I published ssl-config and cachecontrol today for Scala 3, so that helps

#590 should be merged before any attempt is made at this

[mkurz]

@SethTisue As you probably have noticed, #590 got merged.

[mkurz]

@xuwei-k Do you can/want to help?

[xuwei-k]

Could not compile play-ws with Scala 3 due to scala/scala3#12731 😢

play-ws/play-ws-standalone/src/main/scala/play/api/libs/ws/StandaloneWSRequest.scala

Line 23 in c842903

type Self <: StandaloneWSRequest { type Self <: StandaloneWSRequest.this.Self }

[wsargent]

I thought this was very clever of me at the time (it was mostly actually Adriaan)

[mkurz]

@xuwei-k @SethTisue did you see these 2 comments? Replacing F-bounds by intersection types? WDYT? Also see scala/scala3#13133 and scala/scala3#10638 (comment)

If you have an F-bounded type T <: F[T] simply replace it with T. Then everywhere T is used, replace it with T & F[T].

[xuwei-k]

#604

[SethTisue]

@mkurz I'm sorry but I don't know what to think about that, and I don't feel that have time to dig into it. :-/

[mkurz]

@SethTisue Currently not so much time as well (coming weeks)...

[ihostage]

Was implemented in #604 but has some comments #604 (review) from @mkurz

[xuwei-k]

🎉

• https://github.com/playframework/play-ws/releases/tag/2.2.0-M2
• https://repo1.maven.org/maven2/com/typesafe/play/play-ws-standalone_3/