Add developers keySetting

The motivation for this is mainly to avoid having to define a pomExtra to publish to Maven central

ivy/src/main/scala/sbt/IvyInterface.scala

@@ -10,7 +10,7 @@ import org.apache.ivy.plugins.resolver.{ DependencyResolver, IBiblioResolver }
 import org.apache.ivy.util.url.CredentialsStore
 
 /** Additional information about a project module */
-final case class ModuleInfo(nameFormal: String, description: String = "", homepage: Option[URL] = None, startYear: Option[Int] = None, licenses: Seq[(String, URL)] = Nil, organizationName: String = "", organizationHomepage: Option[URL] = None, scmInfo: Option[ScmInfo] = None) {
+final case class ModuleInfo(nameFormal: String, description: String = "", homepage: Option[URL] = None, startYear: Option[Int] = None, licenses: Seq[(String, URL)] = Nil, organizationName: String = "", organizationHomepage: Option[URL] = None, scmInfo: Option[ScmInfo] = None, developers: Seq[Developer] = Seq()) {
   def formally(name: String) = copy(nameFormal = name)
   def describing(desc: String, home: Option[URL]) = copy(description = desc, homepage = home)
   def licensed(lics: (String, URL)*) = copy(licenses = lics)
@@ -20,6 +20,8 @@ final case class ModuleInfo(nameFormal: String, description: String = "", homepa
 /** Basic SCM information for a project module */
 final case class ScmInfo(browseUrl: URL, connection: String, devConnection: Option[String] = None)
 
+final case class Developer(id: String, name: String, email: String, url: URL)
+
 /** Rule to exclude unwanted dependencies pulled in transitively by a module. */
 final case class ExclusionRule(organization: String = "*", name: String = "*", artifact: String = "*", configurations: Seq[String] = Nil)
 

ivy/src/main/scala/sbt/MakePom.scala

@@ -42,6 +42,7 @@ class MakePom(val log: Logger) {
        { makeStartYear(moduleInfo) }
        { makeOrganization(moduleInfo) }
        { makeScmInfo(moduleInfo) }
+       { makeDeveloperInfo(moduleInfo) }
        { extra }
        {
          val deps = depsInConfs(module, configurations)
@@ -100,6 +101,21 @@ class MakePom(val log: Logger) {
         case _ => NodeSeq.Empty
       }
     }
+  def makeDeveloperInfo(moduleInfo: ModuleInfo): NodeSeq =
+    {
+      if (moduleInfo.developers.nonEmpty) {
+        <developers>
+          moduleInfo.developers.map{ developer: Developer =>
+            <developer>
+              <id>{ developer.id }</id>
+              <name>{ developer.name }</name>
+              <email>{ developer.email }</email>
+              <url>{ developer.url }</url>
+            </developer>
+          }
+        </developers>
+      } else NodeSeq.Empty
+    }
   def makeProperties(module: ModuleDescriptor, dependencies: Seq[DependencyDescriptor]): NodeSeq =
     {
       val extra = IvySbt.getExtraAttributes(module)

main/src/main/scala/sbt/Defaults.scala

@@ -1042,7 +1042,7 @@ object Classpaths {
     organization <<= organization or normalizedName,
     organizationName <<= organizationName or organization,
     organizationHomepage <<= organizationHomepage or homepage,
-    projectInfo <<= (name, description, homepage, startYear, licenses, organizationName, organizationHomepage, scmInfo) apply ModuleInfo,
+    projectInfo <<= (name, description, homepage, startYear, licenses, organizationName, organizationHomepage, scmInfo, developers) apply ModuleInfo,
     overrideBuildResolvers <<= appConfiguration(isOverrideRepositories),
     externalResolvers <<= (externalResolvers.task.?, resolvers, appResolvers) {
       case (Some(delegated), Seq(), _) => delegated

main/src/main/scala/sbt/Keys.scala

@@ -214,6 +214,7 @@ object Keys {
   val organization = SettingKey[String]("organization", "Organization/group ID.", APlusSetting)
   val organizationName = SettingKey[String]("organization-name", "Organization full/formal name.", BMinusSetting)
   val organizationHomepage = SettingKey[Option[URL]]("organization-homepage", "Organization homepage.", BMinusSetting)
+  val developers = SettingKey[List[Developer]]("developers", "List of developers implicated in the project", BMinusSetting)
   val apiURL = SettingKey[Option[URL]]("api-url", "Base URL for API documentation.", BMinusSetting)
   val entryApiURL = AttributeKey[URL]("entry-api-url", "Base URL for the API documentation for a classpath entry.")
   val apiMappings = TaskKey[Map[File, URL]]("api-mappings", "Mappings from classpath entry to API documentation base URL.", BMinusSetting)