upd

build.sbt

@@ -1,12 +1,11 @@
 import com.softwaremill.SbtSoftwareMillCommon.commonSmlBuildSettings
+import Dependencies._
 
 lazy val commonSettings = commonSmlBuildSettings ++ Seq(
  organization := "com.softwaremill.xxx",
  scalaVersion := "2.13.12"
 )
 
-val scalaTest = "org.scalatest" %% "scalatest" % "3.2.17" % Test
-
 lazy val rootProject = (project in file("."))
  .settings(commonSettings: _*)
  .settings(publishArtifact := false, name := "root")
@@ -16,7 +15,14 @@ lazy val core: Project = (project in file("core"))
  .settings(commonSettings: _*)
  .settings(
  name := "core",
- libraryDependencies ++= Seq(
- scalaTest
- )
+ libraryDependencies ++=
+ scalaTest ++
+ cats ++
+ http4s
+
  )
+
+addCommandAlias(
+ "format",
+ "; scalafmtAll ; scalafmtSbt; Test / scalafmtAll"
+)

core/src/main/scala/Main.scala

@@ -1,5 +1,3 @@
-
-
 object Main {
  def main(args: Array[String]) = println("hello world")
-}
+}

core/src/test/scala/MySpec.scala

@@ -1,8 +1,7 @@
-
 import org.scalatest.matchers.should.Matchers
 import org.scalatest.flatspec.AnyFlatSpec
 class MySpec extends AnyFlatSpec with Matchers {
  "This" should "do" in {
- 1 + 2 should be (3)
+ 1 + 2 should be(3)
  }
-}
+}

project/Dependencies.scala

@@ -0,0 +1,20 @@
+import sbt.*
+
+object Dependencies {
+
+ lazy val cats: Seq[ModuleID] = Seq(
+ "org.typelevel" %% "cats-core" % Versions.cats,
+ "org.typelevel" %% "cats-effect" % Versions.catsEffect
+ )
+
+ lazy val http4s: Seq[ModuleID] = Seq(
+ "org.http4s" %% "http4s-ember-client" % Versions.http4s,
+ "org.http4s" %% "http4s-ember-server" % Versions.http4s,
+ "org.http4s" %% "http4s-circe" % Versions.http4s,
+ "org.http4s" %% "http4s-dsl" % Versions.http4s
+ )
+
+ lazy val scalaTest: Seq[ModuleID] = Seq(
+ "org.scalatest" %% "scalatest" % Versions.scalaTest % Test
+ )
+}

project/Versions.scala

@@ -1,3 +1,6 @@
 object Versions {
+ val cats = "2.10.0"
+ val catsEffect = "3.5.2"
  val http4s = "0.23.21"
+ val scalaTest = "3.2.17"
 }