Add the following line to your plugins.sbt file:

addSbtPlugin("com.alejandrohdezma" %% "sbt-fix" % "0.8.0")

This plugin adds a fix task to every project in the build.

This task can be used to launch both scalafmt and scalafix in all supported configurations.

fix

It can also be used for checking that all files have been fixed with both tools, exiting with non-zero code on violations, by appending the --check argument (which can be used in CI to check formatting easily).

fix --check

Both usages can be scoped to a specific project in the build:

my-project/fix
my-project/fix --check