WIP moving most of our build logic into a Mill build.sc

.travis.yml

@@ -1,31 +1,15 @@
 language: scala
-
-script:
-  - sbt ++2.11.12 readme/run
-  - sbt ++$TRAVIS_SCALA_VERSION scalatagsJVM/test scalatagsJS/test
-
-scala:
-  - 2.11.12
-  - 2.12.8
-  - 2.13.0-M5
+sudo: required
+dist: trusty
+addons:
+  apt:
+    update: true
 
 jdk:
   - oraclejdk8
-  - openjdk11
 
-env:
-  - SCALAJS_VERSION="0.6.26"
-  - SCALAJS_VERSION="1.0.0-M6
-
-sudo: false
-
-# cache stuff, hopefully shortening build times
-cache:
-  directories:
-  - $HOME/.ivy2
-  - $HOME/.sbt/boot
-  - $HOME/.sbt/launchers
-  - $HOME/.coursier
-before_cache:
-  - find $HOME/.sbt -name "*.lock" | xargs rm
-  - find $HOME/.ivy2 -name "ivydata-*.properties" | xargs rm
+script:
+  - curl -L -o ~/bin/mill https://github.com/lihaoyi/mill/releases/download/0.4.0/0.4.0-12-102ddf && chmod +x ~/bin/mill
+  - curl https://raw.githubusercontent.com/scala-native/scala-native/master/scripts/travis_setup.sh | bash -x
+  - export PATH=~/bin/mill:$PATH
+  - mill __.test

build.sbt

@@ -1,92 +1,3 @@
-import sbtcrossproject.CrossPlugin.autoImport.{crossProject, CrossType}
-
-scalaVersion := "2.11.12"
-
-resolvers in ThisBuild += Resolver.sonatypeRepo("releases")
-
-lazy val scalatags = crossProject(JVMPlatform, JSPlatform, NativePlatform)
-  .settings(
-    organization := "com.lihaoyi",
-    name := "scalatags",
-    scalaVersion := "2.11.12",
-
-    autoCompilerPlugins := true,
-    libraryDependencies ++= Seq(
-      //"com.lihaoyi" %% "acyclic" % "0.2.0" % "provided",
-      "com.lihaoyi" %%% "utest" % "0.6.9" % "test",
-      "com.lihaoyi" %%% "sourcecode" % "0.1.7",
-      "org.scala-lang" % "scala-reflect" % scalaVersion.value % "provided",
-      "org.scala-lang.modules" %% "scala-xml" % "1.2.0" % "test"
-    ),
-    //addCompilerPlugin("com.lihaoyi" %% "acyclic" % "0.2.0"),
-    testFrameworks += new TestFramework("utest.runner.Framework"),
-    // Sonatype
-    version := _root_.scalatags.Constants.version,
-    publishTo := Some("releases"  at "https://oss.sonatype.org/service/local/staging/deploy/maven2"),
-
-    pomExtra :=
-      <url>https://github.com/lihaoyi/scalatags</url>
-        <licenses>
-          <license>
-            <name>MIT license</name>
-            <url>http://www.opensource.org/licenses/mit-license.php</url>
-          </license>
-        </licenses>
-        <scm>
-          <url>git://github.com/lihaoyi/scalatags.git</url>
-          <connection>scm:git://github.com/lihaoyi/scalatags.git</connection>
-        </scm>
-        <developers>
-          <developer>
-            <id>lihaoyi</id>
-            <name>Li Haoyi</name>
-            <url>https://github.com/lihaoyi</url>
-          </developer>
-        </developers>
-  )
-  .jvmSettings(
-    crossScalaVersions := Seq("2.12.8", "2.13.0")
-  )
-  .jsSettings(
-    crossScalaVersions := Seq("2.12.8", "2.13.0"),
-    libraryDependencies ++= Seq(
-      "org.scala-js" %%% "scalajs-dom" % "0.9.7"
-    ),
-    jsEnv := new org.scalajs.jsenv.nodejs.JSDOMNodeJSEnv(),
-    scalacOptions ++= (if (isSnapshot.value) Seq.empty else Seq({
-      val a = baseDirectory.value.toURI.toString.replaceFirst("[^/]+/?$", "")
-      val g = "https://raw.githubusercontent.com/lihaoyi/scalatags"
-      s"-P:scalajs:mapSourceURI:$a->$g/${version.value}/scalatags/"
-    }))
-  )
-  .nativeSettings(
-    crossScalaVersions := Seq("2.11.12"),
-    nativeLinkStubs := true
-  )
-
-
-// Needed, so sbt finds the projects
-lazy val scalatagsJVM = scalatags.jvm
-lazy val scalatagsJS = scalatags.js
-lazy val scalatagsNative = scalatags.native
-
-lazy val example = project.in(file("example"))
-  .dependsOn(scalatagsJS)
-  .enablePlugins(ScalaJSPlugin)
-  .settings(
-    scalaVersion := "2.12.8",
-    scalacOptions ++= Seq(
-      "-deprecation", // warning and location for usages of deprecated APIs
-      "-feature", // warning and location for usages of features that should be imported explicitly
-      "-unchecked", // additional warnings where generated code depends on assumptions
-      "-Xlint", // recommended additional warnings
-      "-Xcheckinit", // runtime error when a val is not initialized due to trait hierarchies (instead of NPE somewhere else)
-      "-Ywarn-adapted-args", // Warn if an argument list is modified to match the receiver
-      "-Ywarn-value-discard", // Warn when non-Unit expression results are unused
-      "-Ywarn-inaccessible",
-      "-Ywarn-dead-code"
-    )
-  )
 
 lazy val readme = scalatex.ScalatexReadme(
   projectId = "readme",

build.sc

@@ -0,0 +1,107 @@
+import mill._, scalalib._, scalajslib._, scalanativelib._, publish._
+
+
+trait ScalatagsPublishModule extends PublishModule {
+  def artifactName = "scalatags"
+
+  def publishVersion = "0.7.1"
+
+  def pomSettings = PomSettings(
+    description = artifactName(),
+    organization = "com.lihaoyi",
+    url = "https://github.com/lihaoyi/scalatags",
+    licenses = Seq(License.MIT),
+    scm = SCM(
+      "git://github.com/lihaoyi/scalatags.git",
+      "scm:git://github.com/lihaoyi/scalatags.git"
+    ),
+    developers = Seq(
+      Developer("lihaoyi", "Li Haoyi", "https://github.com/lihaoyi")
+    )
+  )
+}
+
+trait Common extends CrossScalaModule {
+  def millSourcePath = super.millSourcePath / offset
+  def ivyDeps = Agg(
+    ivy"com.lihaoyi::sourcecode::0.1.7",
+  )
+  def compileIvyDeps = Agg(
+    ivy"org.scala-lang:scala-reflect:${scalaVersion()}",
+  )
+  def offset: os.RelPath = os.rel
+  def sources = T.sources(
+    super.sources()
+      .flatMap(source =>
+        Seq(
+          PathRef(source.path / os.up / source.path.last),
+          PathRef(source.path / os.up / os.up / source.path.last),
+        )
+      )
+  )
+}
+
+trait CommonTestModule extends ScalaModule with TestModule {
+  def millSourcePath = super.millSourcePath / os.up
+  def crossScalaVersion: String
+  def ivyDeps = Agg(
+    ivy"com.lihaoyi::utest::0.6.9",
+    ivy"org.scala-lang.modules::scala-xml:1.2.0",
+  )
+  def offset: os.RelPath = os.rel
+  def testFrameworks = Seq("utest.runner.Framework")
+  def sources = T.sources(
+    super.sources()
+      .++(CrossModuleBase.scalaVersionPaths(crossScalaVersion, s => millSourcePath / s"src-$s" ))
+      .flatMap(source =>
+        Seq(
+          PathRef(source.path / os.up / "test" / source.path.last),
+          PathRef(source.path / os.up / os.up / "test" / source.path.last),
+        )
+      )
+      .distinct
+  )
+}
+
+
+object scalatags extends Module {
+  object jvm extends Cross[JvmScalatagsModule]("2.12.8", "2.13.0")
+  class JvmScalatagsModule(val crossScalaVersion: String)
+    extends Common with ScalaModule with ScalatagsPublishModule {
+
+    object test extends Tests with CommonTestModule{
+      def crossScalaVersion = JvmScalatagsModule.this.crossScalaVersion
+    }
+  }
+
+  object js extends Cross[JSScalatagsModule](("2.12.8", "0.6.26"), ("2.13.0", "0.6.28"))
+  class JSScalatagsModule(val crossScalaVersion: String, crossJSVersion: String)
+    extends Common with ScalaJSModule with ScalatagsPublishModule {
+    def scalaJSVersion = crossJSVersion
+    def ivyDeps = super.ivyDeps() ++ Agg(
+      ivy"org.scala-js::scalajs-dom::0.9.7"
+    )
+    def offset = os.up
+    object test extends Tests with CommonTestModule{
+      def offset = os.up
+      def crossScalaVersion = JSScalatagsModule.this.crossScalaVersion
+    }
+  }
+
+  object native extends Cross[NativeScalatagsModule](("2.11.12", "0.3.8"))
+  class NativeScalatagsModule(val crossScalaVersion: String, crossScalaNativeVersion: String)
+    extends Common with ScalaNativeModule with ScalatagsPublishModule {
+    def scalaNativeVersion = crossScalaNativeVersion
+    def offset = os.up
+    object test extends Tests with CommonTestModule{
+      def offset = os.up
+      def crossScalaVersion = NativeScalatagsModule.this.crossScalaVersion
+    }
+  }
+}
+
+object example extends ScalaJSModule{
+  def scalaVersion = "2.12.8"
+  def scalaJSVersion = "0.6.26"
+  def moduleDeps = Seq(scalatags.js("2.12.8", "0.6.26"))
+}

project/build.sbt

@@ -1,13 +1 @@
 addSbtPlugin("com.lihaoyi" % "scalatex-sbt-plugin" % "0.3.11")
-
-val scalaJSVersion =
-  Option(System.getenv("SCALAJS_VERSION")).getOrElse("0.6.28")
-
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
-
-addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.2.2")
-addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.4")
-addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "0.6.0")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.3.8")
-addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "0.6.0")
-