update sbt syntax

build.sbt

@@ -13,7 +13,7 @@ lazy val root = Project("lila", file("."))
 // shorter prod classpath
 scriptClasspath := Seq("*")
 maintainer := "contact@lichess.org"
-resourceDirectory in Compile := baseDirectory.value / "conf"
+Compile / resourceDirectory := baseDirectory.value / "conf"
 
 // format: off
 libraryDependencies ++= akka.bundle ++ playWs.bundle ++ Seq(
@@ -48,20 +48,20 @@ lazy val api = module("api",
   moduleCPDeps,
   Seq(play.api, play.json, hasher, kamon.core, kamon.influxdb, lettuce, specs2) ++ reactivemongo.bundle
 ).settings(
-  aggregate in Runtime := false,
-  aggregate in Test := true  // Test <: Runtime
+  Runtime / aggregate := false,
+  Test / aggregate := true  // Test <: Runtime
 ) aggregate (moduleRefs: _*)
 
 lazy val i18n = smallModule("i18n",
   Seq(common, db, hub),
   Seq(scalatags, specs2)
 ).settings(
-  sourceGenerators in Compile += Def.task {
+  Compile / sourceGenerators += Def.task {
     MessageCompiler(
       sourceDir = new File("translation/source"),
       destDir = new File("translation/dest"),
       dbs = "site arena emails learn activity coordinates study class contact patron coach broadcast streamer tfa settings preferences team perfStat search tourname faq lag swiss puzzle puzzleTheme challenge storm".split(' ').toList,
-      compileTo = (sourceManaged in Compile).value
+      compileTo = (Compile / sourceManaged).value
     )
   }.taskValue
 )

project/BuildSettings.scala

@@ -20,11 +20,12 @@ object BuildSettings {
       scalaVersion := globalScalaVersion,
       scalacOptions ++= compilerOptions,
       // No bloop project for tests
-      bloopGenerate in Test := None,
+      Test / bloopGenerate := None,
       // disable publishing doc and sources
-      sources in (Compile, doc) := Seq.empty,
-      publishArtifact in (Compile, packageDoc) := false,
-      publishArtifact in (Compile, packageSrc) := false,
+      Compile / sources := Seq.empty,
+      doc / sources := Seq.empty,
+      packageDoc / publishArtifact := false,
+      Compile / publishArtifact := false,
       javaOptions ++= Seq("-Xms64m", "-Xmx256m")
     )
 
@@ -98,8 +99,8 @@ object BuildSettings {
   )
 
   val srcMain = Seq(
-    scalaSource in Compile := (sourceDirectory in Compile).value,
-    scalaSource in Test := (sourceDirectory in Test).value
+    Compile / scalaSource := (Compile / sourceDirectory).value,
+    Test / scalaSource := (Test / sourceDirectory).value
   )
 
   def projectToRef(p: Project): ProjectReference = LocalProject(p.id)