From bbf3b0364a8a62cd2c5feb20728e0f7f0bd3f776 Mon Sep 17 00:00:00 2001
From: Jakob Odersky <jakob@odersky.com>
Date: Wed, 30 Nov 2016 22:39:08 -0800
Subject: Simplify build and derive version from git

---
 README.md             |  2 +-
 build.sbt             | 74 ++++++++++++++++++++-------------------------------
 project/Version.scala |  4 ---
 project/plugins.sbt   |  3 ---
 version.sbt           |  1 -
 5 files changed, 30 insertions(+), 54 deletions(-)
 delete mode 100644 project/Version.scala
 delete mode 100644 version.sbt

diff --git a/README.md b/README.md
index c908b04..411cb89 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ The second point, portability, is inherent to JNI and thus unavoidable. However
 All plugins are made available with the following sbt configuration
 ```scala
 
-addSbtPlugin("ch.jodersky" % "sbt-jni" % "1.2.4")
+addSbtPlugin("ch.jodersky" % "sbt-jni" % "<latest version>")
 ```
 in `project/plugins.sbt`.
 
diff --git a/build.sbt b/build.sbt
index 2b1271f..30fed7c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,70 +1,55 @@
-import sbt._
-import sbt.Keys._
-import sbt.ScriptedPlugin._
+val scalaVersions = Seq("2.12.0", "2.11.8", "2.10.6")
+val macrosParadiseVersion = "2.1.0"
 
-import sbtdoge.CrossPerProjectPlugin
-
-import scalariform.formatter.preferences._
-import com.typesafe.sbt.SbtScalariform
-import com.typesafe.sbt.SbtScalariform.ScalariformKeys
-
-val commonSettings = Seq(
-  organization := "ch.jodersky",
-  licenses := Seq(("BSD New", url("http://opensource.org/licenses/BSD-3-Clause"))),
-  scalacOptions ++= Seq("-deprecation", "-feature"),
-  resolvers += Resolver.sonatypeRepo("releases"),
-  ScalariformKeys.preferences := ScalariformKeys.preferences.value
-    .setPreference(DoubleIndentClassDeclaration, true)
-    .setPreference(DanglingCloseParenthesis, Preserve)
-    .setPreference(MultilineScaladocCommentsStartOnFirstLine, true)
-    .setPreference(PlaceScaladocAsterisksBeneathSecondAsterisk, true)
+// version is derived from latest git tag
+version in ThisBuild := ("git describe --always --dirty --match v[0-9].*" !!).tail.trim
+organization in ThisBuild := "ch.jodersky"
+scalacOptions in ThisBuild ++= Seq(
+  "-deprecation",
+  "-feature",
+  "-Xfatal-warnings",
+  "-Xlint"
 )
+licenses in ThisBuild := Seq(("BSD New", url("http://opensource.org/licenses/BSD-3-Clause")))
 
-lazy val root = Project(
-  id = "root",
-  base = file("."),
-  aggregate = Seq(
-    macros, plugin
-  ),
-  settings = commonSettings ++ Seq(
+lazy val root = (project in file("."))
+  .enablePlugins(CrossPerProjectPlugin)
+  .aggregate(macros, plugin)
+  .settings(
     publish := {},
     publishLocal := {},
     // make sbt-pgp happy
-    publishTo := Some(Resolver.file("Unused transient repository", target.value / "unusedrepo"))
-  ) ++ addCommandAlias("test-plugin", ";+sbt-jni-macros/publishLocal;scripted")
-).enablePlugins(CrossPerProjectPlugin)
+    publishTo := Some(Resolver.file("Unused transient repository", target.value / "unusedrepo")),
+    addCommandAlias("test-plugin", ";+macros/publishLocal;scripted")
+  )
 
-lazy val macros = Project(
-  id = "sbt-jni-macros",
-  base = file("macros"),
-  settings = commonSettings ++ Seq(
-    scalaVersion := Version.scala.head,
-    crossScalaVersions := Version.scala,
-    addCompilerPlugin("org.scalamacros" % "paradise" % Version.macrosParadise cross CrossVersion.full),
+lazy val macros = (project in file("macros"))
+  .settings(
+    name := "sbt-jni-macros",
+    scalaVersion := scalaVersions.head,
+    crossScalaVersions := scalaVersions,
+    addCompilerPlugin("org.scalamacros" % "paradise" % macrosParadiseVersion cross CrossVersion.full),
     libraryDependencies += "org.typelevel" %% "macro-compat" % "1.1.1",
     libraryDependencies += "org.scala-lang" % "scala-compiler" % scalaVersion.value % Provided,
     libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value
   )
-)
 
-lazy val plugin = Project(
-  id = "sbt-jni",
-  base = file("plugin"),
-  settings = commonSettings ++ scriptedSettings ++ Seq(
+lazy val plugin = (project in file("plugin"))
+  .settings(scriptedSettings)
+  .settings(
+    name := "sbt-jni",
     sbtPlugin := true,
     publishMavenStyle := false,
     scalaVersion := "2.10.6",
     crossScalaVersions := Seq(scalaVersion.value),
-
     libraryDependencies += "org.ow2.asm" % "asm" % "5.0.4",
-
     // make project settings available to source
     sourceGenerators in Compile += Def.task {
       val src = s"""|/* Generated by sbt */
                     |package ch.jodersky.sbt.jni
                     |
                     |private[jni] object ProjectVersion {
-                    |  final val MacrosParadise = "${Version.macrosParadise}"
+                    |  final val MacrosParadise = "${macrosParadiseVersion}"
                     |  final val Macros = "${version.value}"
                     |}
                     |""".stripMargin
@@ -77,4 +62,3 @@ lazy val plugin = Project(
       "-XX:MaxPermSize=256m", "-Xmx2g", "-Xss2m"
     )
   )
-)
diff --git a/project/Version.scala b/project/Version.scala
deleted file mode 100644
index bc96fa1..0000000
--- a/project/Version.scala
+++ /dev/null
@@ -1,4 +0,0 @@
-object Version {
-  val scala: Seq[String] = List("2.11.8", "2.10.6", "2.12.0")
-  val macrosParadise = "2.1.0"
-}
\ No newline at end of file
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 19a16f4..d57d693 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -3,6 +3,3 @@ addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.5")
 
 // testing for sbt plugins
 libraryDependencies += "org.scala-sbt" % "scripted-plugin" % sbtVersion.value
-
-// formatting
-addSbtPlugin("org.scalariform" % "sbt-scalariform" % "1.6.0")
diff --git a/version.sbt b/version.sbt
deleted file mode 100644
index 1d60a2c..0000000
--- a/version.sbt
+++ /dev/null
@@ -1 +0,0 @@
-version in ThisBuild := "1.2.5-SNAPSHOT"
-- 
cgit v1.2.3