Error when compiling Scala 3 code using the new and experimental macro annotations

[alexarchambault]

See this repo for a full reproduction.

When trying to compile this code (where @caseapp.entrypoint is a macro annotation), we get an error like:

E] Unexpected error when compiling project_9a380f230a-70bf441a95: 'Failed to find name hashes for Hello$.$method$hello$macro$1'
[E] Failed to compile 'project_9a380f230a-70bf441a95'

The README of the repro repository above has a server stacktrace corresponding to the exception of the "Failed to find name hashes for…" message (at the very end of the README).

[tgodzik]

Finally got back to it and it seems it's a zinc issue, same error in sbt:

sbt:dest> compile
[info] compiling 1 Scala source to /home/tgodzik/Documents/workspaces/bloop-macro-annotation-issue/dest/target/scala-3.3.0-RC2/classes ...
[error] ## Exception when compiling 1 sources to /home/tgodzik/Documents/workspaces/bloop-macro-annotation-issue/dest/target/scala-3.3.0-RC2/classes
[error] java.lang.RuntimeException: Failed to find name hashes for Hello$.$method$hello$macro$1
[error] scala.sys.package$.error(package.scala:30)
[error] sbt.internal.inc.AnalysisCallback.nameHashesForCompanions(Incremental.scala:992)
[error] sbt.internal.inc.AnalysisCallback.analyzeClass(Incremental.scala:999)
[error] sbt.internal.inc.AnalysisCallback.$anonfun$addProductsAndDeps$4(Incremental.scala:1022)
[error] scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:286)

[tgodzik]

I don't think there is anything to do here at this point especially since those macros are experimental and might easily change.