Scaffold - working example of empty scala project

.jvmopts

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+-Dfile.encoding=UTF8
+-Xms1G
+-Xmx5G
+-XX:ReservedCodeCacheSize=500M
+-XX:+TieredCompilation
+-XX:+UseParallelGC

.scalafix.conf

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+rules = [
+    OrganizeImports
+]
+
+OrganizeImports {
+  groupedImports                    = Merge
+  coalesceToWildcardImportThreshold = 3
+  groups                            = ["re:javax?\\.", "cats.", "scala.", "org.acme.", "*"]
+  removeUnused                      = true
+}

.scalafmt.conf

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+version=2.0.0
+
+style = default
+project.git = true
+
+maxColumn = 120
+newlines.alwaysBeforeTopLevelStatements = true
+continuationIndent.defnSite = 2
+continuationIndent.callSite = 2
+newlines.penalizeSingleSelectMultiArgList = false
+includeCurlyBraceInSelectChains = false
+align.openParenCallSite = false
+danglingParentheses = true
+newlines.avoidAfterYield = false
+
+align = some
+
+rewrite.rules = [
+  AvoidInfix
+  RedundantBraces
+  RedundantParens
+  AsciiSortImports
+  PreferCurlyFors
+]

README.md

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+# State channel - examples
+
+```bash
+sbt "stateChannel/run"
+```

build.sbt

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+import Dependencies._
+
+ThisBuild / scalaVersion := "2.13.8"
+ThisBuild / organization := "org.acme"
+ThisBuild / organizationName := "acme"
+
+ThisBuild / evictionErrorLevel := Level.Warn
+ThisBuild / scalafixDependencies += Libraries.organizeImports
+
+resolvers += Resolver.sonatypeRepo("snapshots")
+
+val scalafixCommonSettings = inConfig(IntegrationTest)(scalafixConfigSettings(IntegrationTest))
+
+lazy val commonSettings = Seq(
+  scalacOptions ++= List("-Ymacro-annotations", "-Yrangepos", "-Wconf:cat=unused:info", "-language:reflectiveCalls"),
+  scalafmtOnCompile := true,
+  scalafixOnCompile := true,
+  resolvers ++= List(
+    Resolver.sonatypeRepo("snapshots")
+  )
+)
+
+ThisBuild / assemblyMergeStrategy := {
+  case "logback.xml" => MergeStrategy.first
+  case x if x.contains("io.netty.versions.properties") => MergeStrategy.discard
+  case PathList(xs @ _*) if xs.last == "module-info.class" => MergeStrategy.first
+  case x => (assembly / assemblyMergeStrategy).value(x)
+}
+
+Global / fork := true
+Global / cancelable := true
+Global / onChangedBuildSource := ReloadOnSourceChanges
+
+lazy val root = (project in file("."))
+  .settings(
+    name := "acme"
+  )
+  .aggregate(stateChannel)
+
+lazy val stateChannel = (project in file("modules/state-channel"))
+  .enablePlugins(AshScriptPlugin)
+  .enablePlugins(JavaAppPackaging)
+  .settings(
+    name := "acme-state-channel",
+    Defaults.itSettings,
+    scalafixCommonSettings,
+    commonSettings,
+    libraryDependencies ++= Seq(
+      CompilerPlugin.kindProjector,
+      CompilerPlugin.betterMonadicFor,
+      CompilerPlugin.semanticDB
+    )
+  )
+
+addCommandAlias("runLinter", ";scalafixAll --rules OrganizeImports")

modules/state-channel/src/main/scala/org/acme/Main.scala

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+package org.acme
+
+object Main {
+
+  def main(args: Array[String]) =
+    println("Hello, world")
+}

project/Dependencies.scala

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+import sbt._
+
+object Dependencies {
+
+  object V {
+    val betterMonadicFor = "0.3.1"
+    val kindProjector = "0.13.2"
+    val organizeImports = "0.5.0"
+    val semanticDB = "4.5.9"
+  }
+
+  object Libraries {
+
+    // Scalafix rules
+    val organizeImports = "com.github.liancheng" %% "organize-imports" % V.organizeImports
+  }
+
+  object CompilerPlugin {
+
+    val betterMonadicFor = compilerPlugin(
+      "com.olegpy" %% "better-monadic-for" % V.betterMonadicFor
+    )
+
+    val kindProjector = compilerPlugin(
+      ("org.typelevel" % "kind-projector" % V.kindProjector).cross(CrossVersion.full)
+    )
+
+    val semanticDB = compilerPlugin(
+      ("org.scalameta" % "semanticdb-scalac" % V.semanticDB).cross(CrossVersion.full)
+    )
+  }
+
+}

project/build.properties

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+sbt.version=1.6.2

project/plugins.sbt

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+addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat" % "0.3.3")
+addSbtPlugin("io.spray" % "sbt-revolver" % "0.9.1")
+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.8.1")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.10.0")
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "1.2.0")
+addSbtPlugin("org.jmotor.sbt" % "sbt-dependency-updates" % "1.2.2")
+addDependencyTreePlugin

version.sbt

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+ThisBuild / version := "0.1.0-SNAPSHOT"