Fails to import build with Scala 3

[wheatandtares]

When I compile with

val scalaVersion = "3.2.2"

And dependency

"dev.zio"     %% "zio-s3"                 % "0.4.2.1",

I'm getting an error

2023.01.27 10:40:18 INFO  [error] Modules were resolved with conflicting cross-version suffixes in ProjectRef(uri("file:/..."), "..."):
2023.01.27 10:40:18 INFO  [error]    org.scala-lang.modules:scala-collection-compat _3, _2.13

I am not referencing that package in any other dependency that I'm aware of, and if I remove the zio-s3 dependency my code compiles and runs just fine.

I'm new to Scala and ZIO, but from what I can see, the problem line appears to be this one https://github.com/zio/zio-s3/blob/main/build.sbt#L46 and this one

zio-s3/project/BuildHelper.scala

Line 13 in d90f823

val ScalaDotty = "3.1.2"

[regis-leray]

I cannot reproduce your problem

sbt new scala/scala3.g8 

i changed my sbt build file witht he zio s3 dependency

val scala3Version = "3.2.2"

lazy val root = project
  .in(file("."))
  .settings(
    name := "playground-scala3",
    version := "0.1.0-SNAPSHOT",

    scalaVersion := scala3Version,

    libraryDependencies += "dev.zio" %% "zio-s3" % "0.4.2.3" 
    
  )

sbt compile

We are not using this dependency for scala3 https://github.com/zio/zio-s3/blob/series/2.x/build.sbt#L48
org.scala-lang.modules:scala-collection-compat

[regis-leray]

Please reopen if you have some problem

[wheatandtares]

Hmm it must be that one of my other dependencies is pulling org.scala-lang.modules:scala-collection-compat _3 transitively then

[DGolubets]

I just got this problem.
You can't do if (scalaVersion.value == ScalaDotty) because Scala version evolves.

[regis-leray]

Oki i think i know how to fix it

Also the scala dotty version is static not dynamic. It is set here

zio-s3/project/BuildHelper.scala

Line 13 in fa3d201

val ScalaDotty = "3.1.2"

i dont understand the issue you are facing i was not able to reproduce, can you provide a script scastie to reproduce the issue

[regis-leray]

I was checking the dependencies of the project , i dont see anything regarding the
https://repo1.maven.org/maven2/dev/zio/zio-s3_3/0.4.2.4/zio-s3_3-0.4.2.4.pom

org.scala-lang.modules:scala-collection-compat

[regis-leray]

You can also display the graph of the dependency with dependency tree command

https://www.baeldung.com/scala/sbt-dependency-tree

[DGolubets]

You can try https://scastie.scala-lang.org/TY0yKIaDTAygq4GxKtPrIA
It looks like zio-s3 brings this from zio-nio.
Indeed they mention they fix it in newer release: https://github.com/zio/zio-nio/releases/tag/v2.0.1 (but zio-s3 pulls 2.0.0)

[regis-leray]

#468

[regis-leray]

release 0.4.3