Issues using Ammonite 2.5 in SBT Project

[OOPMan]

Hi, I'm having some issues trying to use Ammonite 2.5 in my project.

My SBT file can be viewed at https://github.com/OOPMan/collectioneer/blob/master/build.sbt

When I attempt to sbt update I get the following:

[error] Modules were resolved with conflicting cross-version suffixes in ProjectRef(uri("file:/E:/Development/Scala/collectioneer/"), "collectioneer"):
[error]    com.lihaoyi:sourcecode _3, _2.13
[error]    com.lihaoyi:fansi _3, _2.13
[error] Modules were resolved with conflicting cross-version suffixes in ProjectRef(uri("file:/E:/Development/Scala/collectioneer/"), "core"):
[error]    org.scala-lang.modules:scala-collection-compat _3, _2.13
[error]    com.lihaoyi:sourcecode _3, _2.13
[error]    com.lihaoyi:fansi _3, _2.13
[error] Modules were resolved with conflicting cross-version suffixes in ProjectRef(uri("file:/E:/Development/Scala/collectioneer/"), "repl"):
[error]    com.lihaoyi:sourcecode _3, _2.13
[error]    com.lihaoyi:fansi _3, _2.13
[error] stack trace is suppressed; run 'last core / update' for the full output
[error] stack trace is suppressed; run 'last repl / update' for the full output
[error] stack trace is suppressed; run 'last update' for the full output
[error] (core / update) Conflicting cross-version suffixes in: org.scala-lang.modules:scala-collection-compat, com.lihaoyi:sourcecode, com.lihaoyi:fansi
[error] (repl / update) Conflicting cross-version suffixes in: com.lihaoyi:sourcecode, com.lihaoyi:fansi
[error] (update) Conflicting cross-version suffixes in: com.lihaoyi:sourcecode, com.lihaoyi:fansi
[error] Total time: 0 s, completed Dec 22, 2021, 10:31:51 AM
[IJ]```

I'm not quite sure what's happening here. Can anyone assist?

[pme123]

I have the same issue (same exception) - I could not figure out how to use Ammonite in a Scala 3 project.

The sbt dependencyTree shows this:

Strange that com.lihaoyi:ammonite-cross-3.1.1-util_2.13 depends on both.

[OOPMan]

@pme123 The frustrating thing is that I was using an earlier version with no issues.

[mpollmeier]

tl;dr; I tried to work around the duplicate dependencies but haven't found a way forward yet.

Full version: I tried to exclude the _2.13 sibling of the duplicated dependencies:

excludeDependencies ++= Seq(
  "fansi",
  "os-lib",
  "geny",
  "upack",
  "ujson",
  "upickle",
  "upickle-core",
  "upickle-implicits",
  "sourcecode",
  "pprint"
).map(artifactName =>
  ExclusionRule("com.lihaoyi", s"${artifactName}_2.13")
) :+ ExclusionRule("org.scala-lang.modules", "scala-xml_2.13")

Some ammonite artifacts don't exist for scala 3 yet, e.g. ammonite-storage and ammonite-util. I guess because they rely on things like TypeTag which got dropped in Scala3.

Apart from that scalac is happy. However, at runtime there's a variety of linker issues, e.g.

scala> ammonite.runtime.Storage.toString
java.lang.NoSuchMethodError: 'void upickle.core.Types$Writer.$init$(upickle.core.Types$Writer)'
  at ammonite.runtime.Storage$$anon$27.<init>(Storage.scala:110)
  at ammonite.runtime.Storage$.<clinit>(Storage.scala:110)
  ... 66 elided

I also tried to selectively pick and mix _2.13 and _3 from the exclusionlist above, but just ended up with different compiler and/or linker issues.

[mpollmeier]

fwiw a workaround is to turn it around: rather than adding ammonite as a dependency to your build, you can start the regular amm repl and load up all your project's jars.

[mpollmeier]

fwiw tried something else, still no success though:

Selectively add dependencies in util: only add fansi for scala2 and only add fansi_3 for scala3: https://github.com/mpollmeier/Ammonite/commit/97b59317beca3af514d3e477b5aedb859ede5734

mill "amm[3.2.0].compile"
...
[error] amm/repl/src/main/scala/ammonite/repl/AmmoniteFrontEnd.scala:50:9: Unsupported Scala 3 inline macro method generate; found in trait sourcecode.EnclosingMacros.
[error]     val autocompleteFilter: Filter = Filter.action(SpecialKeys.Tab){
[error]         ^
[error] amm/repl/src/main/scala/ammonite/repl/AmmoniteFrontEnd.scala:104:6: could not find implicit value for parameter i: sourcecode.Enclosing
[error]     ){
[error]      ^
[error] amm/repl/src/main/scala/ammonite/repl/AmmoniteFrontEnd.scala:113:34: could not find implicit value for parameter i: sourcecode.Enclosing
[error]     val allFilters = Filter.merge(
[error]                                  ^
[error] three errors found
1 targets failed
amm.repl[3.2.0].compile Compilation failed