问题
I am using a JSON extension which relies on Mandubian's play-json 2.2-SNAPSHOT. Everything worked fine until now I have a project based on Scala-STM. sbt reports the following problem:
[error] Modules were resolved with conflicting cross-version suffixes
in {file:folder}project:
[error] org.scala-stm:scala-stm _2.10, _2.10.0
java.lang.RuntimeException: Conflicting cross-version suffixes in:
org.scala-stm:scala-stm
Is there any chance to dig deeper into where these two "conflicting" versions come from? I am quite surprised that play-json should be depending on scala-stm?!
Furthermore, is there a way to convince sbt to shut the ... up. Because obviously 2.10 and 2.10.0 are equivalent versions.
EDIT: This seems to be an sbt 0.13 bug (and probably has nothing to do with Play-JSON), because if I revert to 0.12.4, the project successfully updates and builds. I am still interested in a work around for sbt 0.13.
回答1:
You can get around this by removing scala-stm with exclude
"dependencyGroupId" %% "dependencyArtifactId" % "dependencyVersion" exclude("org.scala-stm", "scala-stm_2.10.0")
Do not forget to do sbt clean.
回答2:
Updated Play2 2.2 - downgrading to SBT from 0.13.0 -> 0.12.4 didn't work with me, but excluding using exclude("org.scala-stm", "scala-stm_2.10.0") on ALL app-specific dependencies I had worked fine -- anyway -- none of my dependencies shouldn't have anything to do with scala-stm.
回答3:
If you'd like to see all libraries being pulled in to your SBT project, you can use the SBT dependency graph plugin.
Using this, you can see why scala-stm is being pulled in, and also check for other conflicting scala 2.10 and 2.11 dependencies.
来源：https://stackoverflow.com/questions/19242450/conflicting-cross-version-suffixes-sbt-scala-stm-play-json