hi, I'm having some trouble to use scalafix with pants. I run

./pants fmt.scalafix --semantic --rules=RemoveUnused libs/common/src/main/scala

and I got the following message :

==== stderr ====

                     ==== stdout ====
                     error: The Scala compiler option "-Ywarn-unused" is required to use RemoveUnused.
                     To fix this problem, update your build to use at least one Scala compiler
                     option that starts with "-Ywarn-unused"
                     DEBUG] releasing lock: <pants.process.lock.OwnerPrintingInterProcessFileLock object at 0x7f65e8085410>                                                                                                                   

FAILURE: scalafix.cli.Cli ... failed to fix (4) targets.

yet I have these lines in my pants.ini

[compile.zinc]
args: [
      # ...
      '-S-Ywarn-unused:implicits',
      '-S-Ywarn-unused:imports',
      '-S-Ywarn-unused:locals',
      '-S-Ywarn-unused:params',
      '-S-Ywarn-unused:patvars',
      '-S-Ywarn-unused:privates',
      '-S-Ywarn-value-discard',
      '-S-Yrangepos'
  ]

And the

ldebug

does show me these args

possibly scalac is expecting

-Ywarn-unused

as an option instead of the finer grained ones?

yet the message says

that starts with "-Ywarn-unused"

, but good point, I'll try it tomorrow, thx

does https://github.com/scalacenter/scalafix/blob/4b47cb2f50f11be50bca32897c6ddaca9a6ea35b/docs/rules/RemoveUnused.md help? (forwarded from a colleague)

sorry it does not help, and using the vanilla

-Ywarn-unused

does not do the trick either 😕