Fix #195 Adding rpmBrpJavaRepackJars setting to trigger faster rpm

builds

src/main/resources/com/typesafe/sbt/packager/rpm/brpJavaRepackJar

@@ -0,0 +1,6 @@
+%define __os_install_post \
+/usr/lib/rpm/brp-compress \
+%{!?__debug_package:/usr/lib/rpm/brp-strip %{__strip}} \
+/usr/lib/rpm/brp-strip-static-archive %{__strip} \
+/usr/lib/rpm/brp-strip-comment-note %{__strip} %{__objdump} \
+%{nil}

src/main/scala/com/typesafe/sbt/packager/rpm/Keys.scala

@@ -46,6 +46,8 @@ trait RpmKeys {
   val rpmPosttrans = SettingKey[Option[String]]("rpm-posttrans", "%posttrans scriptlet")
   val rpmPreun = SettingKey[Option[String]]("rpm-preun", "%preun scriptlet")
   val rpmPostun = SettingKey[Option[String]]("rpm-postun", "%postun scriptlet")
+  val rpmBrpJavaRepackJars = SettingKey[Boolean]("brp-java-repack-jars", """Overrides the __os_post_install scriplet
+      http://swaeku.github.io/blog/2013/08/05/how-to-disable-brp-java-repack-jars-during-rpm-build/ for details""")
 
   // Building
   val rpmLint = TaskKey[Unit]("rpm-lint", "Runs rpmlint program against the genreated RPM, if available.")

src/main/scala/com/typesafe/sbt/packager/rpm/RpmPlugin.scala

@@ -5,6 +5,7 @@ package rpm
 import Keys._
 import linux._
 import sbt._
+import java.nio.charset.Charset
 
 /** Plugin trait containing all generic values used for packaging linux software. */
 trait RpmPlugin extends Plugin with LinuxPlugin {
@@ -34,6 +35,7 @@ trait RpmPlugin extends Plugin with LinuxPlugin {
     rpmPosttrans := None,
     rpmPreun := None,
     rpmPostun := None,
+    rpmBrpJavaRepackJars := false,
     packageSummary in Rpm <<= packageSummary in Linux,
     packageDescription in Rpm <<= packageDescription in Linux,
     target in Rpm <<= target(_ / "rpm")
@@ -45,6 +47,12 @@ trait RpmPlugin extends Plugin with LinuxPlugin {
         (rpmLicense, rpmDistribution, rpmUrl, rpmGroup, rpmPackager, rpmIcon) apply RpmDescription,
       rpmDependencies <<=
         (rpmProvides, rpmRequirements, rpmPrerequisites, rpmObsoletes, rpmConflicts) apply RpmDependencies,
+      rpmPre <<= (rpmPre, rpmBrpJavaRepackJars) apply {
+        case (_, true) => None
+        case (pre, false) =>
+          val scriptBits = IO.readStream(RpmPlugin.osPostInstallMacro.openStream, Charset forName "UTF-8")
+          Some(pre.map(_ + "\n").getOrElse("") + scriptBits)
+      },
       rpmScripts <<=
         (rpmPretrans, rpmPre, rpmPost, rpmVerifyscript, rpmPosttrans, rpmPreun, rpmPostun) apply RpmScripts,
       rpmSpecConfig <<=
@@ -64,8 +72,9 @@ trait RpmPlugin extends Plugin with LinuxPlugin {
 
 object RpmPlugin {
 
-  def preinstTemplateSource: java.net.URL = getClass.getResource("preinstall")
-  def postinstTemplateSource: java.net.URL = getClass.getResource("postinstall")
-  def preuninstallTemplateSource: java.net.URL = getClass.getResource("preuninstall")
-  def postuninstallTemplateSource: java.net.URL = getClass.getResource("postuninstall")
+  def preinstTemplateSource: java.net.URL = getClass getResource "preinstall"
+  def postinstTemplateSource: java.net.URL = getClass getResource "postinstall"
+  def preuninstallTemplateSource: java.net.URL = getClass getResource "preuninstall"
+  def postuninstallTemplateSource: java.net.URL = getClass getResource "postuninstall"
+  def osPostInstallMacro: java.net.URL = getClass getResource "brpJavaRepackJar"
 }