Add release plug ins for publishing to Maven Central

project/Build.scala

@@ -1,18 +1,59 @@
 import java.util.jar._
 import sbt._
 import sbt.Keys._
-
+import sbtrelease.ReleasePlugin._
+import sbtrelease._
+import ReleaseStateTransformations._
+import xerial.sbt.Sonatype._
+import com.typesafe.sbt.pgp._
 
 object Build extends Build {
 
   val commonSettings = Seq(
     organization := "com.gu",
     scalaVersion := "2.10.4",
     crossScalaVersions := Seq("2.10.4", "2.11.2"),
-    version      := "0.2-SNAPSHOT",
     scalacOptions ++= Seq("-feature", "-deprecation", "-language:higherKinds", "-Xfatal-warnings")
   )
 
+  val publishSettings = releaseSettings ++ sonatypeSettings ++ Seq(
+    scmInfo := Some(ScmInfo(
+      url("https://github.com/bmjames/json4s-zipper"),
+      "scm:git:git@github.com:bmjames/json4s-zipper.git"
+    )),
+    pomExtra := (
+      <url>https://github.com/bmjames/json4s-zipper</url>
+          <developers>
+        <developer>
+        <id>bmjames</id>
+        <name>Ben James</name>
+        <url>https://github.com/bmjames</url>
+          </developer>
+        </developers>
+    ),
+    licenses := Seq(
+      "Apache V2" -> url("http://www.apache.org/licenses/LICENSE-2.0.html")
+    ),
+    ReleaseKeys.crossBuild := true,
+    ReleaseKeys.releaseProcess := Seq[ReleaseStep](
+      checkSnapshotDependencies,
+      inquireVersions,
+      runClean,
+      runTest,
+      setReleaseVersion,
+      commitReleaseVersion,
+      tagRelease,
+      ReleaseStep(
+        action = state => Project.extract(state).runTask(PgpKeys.publishSigned, state)._1,
+        enableCrossBuild = true
+      ),
+      setNextVersion,
+      commitNextVersion,
+      ReleaseStep(state => Project.extract(state).runTask(SonatypeKeys.sonatypeReleaseAll, state)._1),
+      pushChanges
+    )
+  )
+
   val scalazVersion = "7.1.0"
   val scalacheckVersion = "1.11.0"
   val scalatestVersion = "2.2.1"
@@ -23,20 +64,25 @@ object Build extends Build {
     .settings(commonSettings ++ publishSettings: _*)
     .settings(
       name := "json-zipper-core",
+      description := "JSON Zipper core library",
       libraryDependencies += "org.scalaz" %% "scalaz-core" % scalazVersion
     )
 
   val scalacheckBinding = Project("scalacheck-binding", file("scalacheck-binding"))
     .dependsOn(core)
     .settings(commonSettings ++ publishSettings: _*)
-    .settings(name := "json-zipper-scalacheck-binding")
-    .settings(libraryDependencies += "org.scalacheck" %% "scalacheck" % scalacheckVersion)
+    .settings(
+      name := "json-zipper-scalacheck-binding",
+      description := "JSON Zipper ScalaCheck binding",
+      libraryDependencies += "org.scalacheck" %% "scalacheck" % scalacheckVersion
+    )
 
   val json4s = Project("json4s", file("json4s"))
     .dependsOn(core, scalacheckBinding)
     .settings(commonSettings ++ publishSettings: _*)
     .settings(
       name := "json-zipper-json4s",
+      description := "JSON Zipper Json4s binding",
       libraryDependencies ++= Seq(
         "org.json4s" %% "json4s-core" % json4sVersion,
         "org.scalacheck" %% "scalacheck" % scalacheckVersion % "test"
@@ -47,6 +93,7 @@ object Build extends Build {
     .settings(commonSettings ++ publishSettings: _*)
     .settings(
       name := "json-zipper-play",
+      description := "JSON Zipper Play binding",
       resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/",
       libraryDependencies ++= Seq(
         "com.typesafe.play" %% "play-json" % playVersion,
@@ -65,23 +112,4 @@ object Build extends Build {
   val root = Project("root", file("."))
     .settings(commonSettings: _*)
     .aggregate(core, json4s, play, scalacheckBinding, test)
-
-  def publishSettings = Seq(
-    publishArtifact := true,
-    packageOptions <+= (version, name) map { (v, n) =>
-      Package.ManifestAttributes(
-        Attributes.Name.IMPLEMENTATION_VERSION -> v,
-        Attributes.Name.IMPLEMENTATION_TITLE -> n,
-        Attributes.Name.IMPLEMENTATION_VENDOR -> "guardian.co.uk"
-      )
-    },
-    publishTo <<= version { version: String =>
-      val publishType = if (version.endsWith("SNAPSHOT")) "snapshots" else "releases"
-      Some(Resolver.file(
-        "guardian github " + publishType,
-        file(System.getProperty("user.home") + "/guardian.github.com/maven/repo-" + publishType)
-      ))
-    }
-  )
-
 }

project/plugins.sbt

@@ -0,0 +1,5 @@
+addSbtPlugin("com.github.gseitz" % "sbt-release" % "0.8.3")
+
+addSbtPlugin("com.typesafe.sbt" % "sbt-pgp" % "0.8.2")
+
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "0.2.1")

version.sbt

@@ -0,0 +1 @@
+version in ThisBuild := "0.2-SNAPSHOT"