Is it possible to disable the unused warnings for generated src code in target/src_manged?

[Kalin-Rudnicki]

No description provided.

[iRevive]

Not the same, but in Scala 2.13 you can suppress warnings in a directory:

Compile / scalacOptions += "-Wconf:src=target/.*:silent" // suppress all warnings for autogenerated files

[DavidGregory084]

@iRevive's suggestion is how I've seen most projects deal with this problem (see e.g. https://github.com/hmrc/transit-movements-guarantee-balance/blob/main/build.sbt#L45), but if your code generator uses a custom sbt configuration (i.e. not Compile or Test but e.g. Routes) you could potentially set options in that configuration instead.

[ccarlile]

I came to the repo specifically to find this info - maybe it should be added to the README?

[hugo-vrijswijk]

Is there a similar option for Scala 3?

[DavidGregory084]

@hugo-vrijswijk The Compiler Options Lookup Table says that -Wconf is available in Scala 3.3.x, so it should be the same?

[hugo-vrijswijk]

I think the syntax might be different, or it is unsupported:

[warn] Failed to parse `-Wconf` configuration: src=target/.*:silent
[warn] unknown filter: src

[DavidGregory084]

Unfortunately it looks like the src filter for -Wconf is not yet supported on Scala 3.x.

[lenguyenthanh]

fyi src filter is supported in scala 3.3.4 and 3.5.0: scala/scala3#18783

[FunkyFunctor-Chris]

Confirmed: the following worked for the ScalaPb generated classes on Scala 3.5.1
Compile / scalacOptions += "-Wconf:src=target/scala[^/]*/src_managed/.*:silent"