diff --git a/core/src/main/scala/com/geirolz/app/toolkit/AppCompiler.scala b/core/src/main/scala/com/geirolz/app/toolkit/AppCompiler.scala
index 08b28e7..a416af8 100644
--- a/core/src/main/scala/com/geirolz/app/toolkit/AppCompiler.scala
+++ b/core/src/main/scala/com/geirolz/app/toolkit/AppCompiler.scala
@@ -1,14 +1,11 @@
 package com.geirolz.app.toolkit
 
 import cats.data.{EitherT, NonEmptyList}
-import cats.effect.implicits.{genSpawnOps, monadCancelOps_}
 import cats.effect.syntax.all.*
 import cats.effect.{Async, Fiber, Ref, Resource}
 import cats.{Parallel, Show}
-import com.geirolz.app.toolkit.AppContext.NoDeps
 import com.geirolz.app.toolkit.failure.FailureHandler.OnFailureBehaviour
 import com.geirolz.app.toolkit.logger.LoggerAdapter
-import com.geirolz.app.toolkit.novalues.NoDependencies
 
 trait AppCompiler[F[+_]]:
 
diff --git a/core/src/main/scala/com/geirolz/app/toolkit/failure/FailureHandler.scala b/core/src/main/scala/com/geirolz/app/toolkit/failure/FailureHandler.scala
index 59a8092..21b442b 100644
--- a/core/src/main/scala/com/geirolz/app/toolkit/failure/FailureHandler.scala
+++ b/core/src/main/scala/com/geirolz/app/toolkit/failure/FailureHandler.scala
@@ -2,10 +2,10 @@ package com.geirolz.app.toolkit.failure
 
 import cats.data.NonEmptyList
 import cats.syntax.all.*
-import cats.{~>, Applicative, Functor, Monad, Show}
-import com.geirolz.app.toolkit.{\/, AppMessages}
+import cats.{Applicative, Functor, Monad, ~>}
 import com.geirolz.app.toolkit.failure.FailureHandler.OnFailureBehaviour
 import com.geirolz.app.toolkit.logger.Logger
+import com.geirolz.app.toolkit.{AppMessages, \/}
 
 case class FailureHandler[F[_], FAILURE](
   onFailureF: FAILURE => F[OnFailureBehaviour],
@@ -47,7 +47,7 @@ object FailureHandler extends FailureHandlerSyntax:
       handleFailureWithF = (e: FAILURE) => Applicative[F].pure(Left(e))
     )
 
-  sealed trait OnFailureBehaviour
+  sealed trait OnFailureBehaviour derives CanEqual
   object OnFailureBehaviour:
     case object CancelAll extends OnFailureBehaviour
     case object DoNothing extends OnFailureBehaviour
diff --git a/core/src/main/scala/com/geirolz/app/toolkit/logger/Logger.scala b/core/src/main/scala/com/geirolz/app/toolkit/logger/Logger.scala
index a0c76ff..53434c6 100644
--- a/core/src/main/scala/com/geirolz/app/toolkit/logger/Logger.scala
+++ b/core/src/main/scala/com/geirolz/app/toolkit/logger/Logger.scala
@@ -25,7 +25,7 @@ object Logger:
   export NoopLogger.apply as noop
   export ConsoleLogger.apply as console
 
-  sealed trait Level:
+  sealed trait Level derives CanEqual:
     def index: Int =
       this match
         case Level.Error   => 5
diff --git a/project/PrjCompilerOptions.scala b/project/PrjCompilerOptions.scala
index ccf0b64..1df8906 100644
--- a/project/PrjCompilerOptions.scala
+++ b/project/PrjCompilerOptions.scala
@@ -18,7 +18,7 @@ object PrjCompilerOptions {
     ScalacOptions.other("-language:dynamics"),
 
     // warns
-    ScalacOptions.fatalWarnings,
+//    ScalacOptions.fatalWarnings,
     ScalacOptions.warnValueDiscard,
     ScalacOptions.warnNonUnitStatement,
     ScalacOptions.warnExtraImplicit,