Remove export-rt

The feature of export-rt is now folded into sbt-launcher

build.sbt

@@ -33,8 +33,6 @@ lazy val scala212Jline = "jline" % "jline" % "2.14.6"
 // use the scala-xml version used by the compiler not the latest: https://github.com/scala/scala/blob/v2.12.10/versions.properties#L22
 lazy val scala212Xml = "org.scala-lang.modules" % "scala-xml_2.12" % "1.0.6"
 lazy val sbtActual = "org.scala-sbt" % "sbt" % sbtVersionToRelease
-val java9rtexportVersion = "0.1.0"
-lazy val java9rtexport = "org.scala-sbt.rt" % "java9-rt-export" % java9rtexportVersion % Runtime
 
 lazy val sbt013ExtraDeps = {
   if (sbtVersionToRelease startsWith "0.13.") Seq(scala210Jline)
@@ -65,7 +63,6 @@ val windowsBuildId = settingKey[Int]("build id for Windows installer")
 val debianBuildId = settingKey[Int]("build id for Debian")
 
 val exportRepoUsingCoursier = taskKey[File]("export Maven style repository")
-val rtExportUsingCoursier = taskKey[File]("Grab RT export utility")
 val exportRepoCsrDirectory = settingKey[File]("")
 
 val x86MacPlatform = "x86_64-apple-darwin"
@@ -252,15 +249,6 @@ val root = (project in file(".")).
     packageName in Universal := packageName.value, // needs to be set explicitly due to a bug in native-packager
     version in Universal := sbtVersionToRelease,
 
-    rtExportUsingCoursier := {
-      val csr =
-        if (isWindows) (baseDirectory in LocalRootProject).value / "bin" / "coursier.bat"
-        else (baseDirectory in LocalRootProject).value / "bin" / "coursier"
-      val cache = target.value / "coursier"
-      s"$csr fetch --cache $cache ${colonName(java9rtexport)}".!
-      (cache ** "*.jar").get.head
-    },
-
     mappings in Universal := {
       val t = (target in Universal).value
       val prev = (mappings in Universal).value
@@ -292,10 +280,8 @@ val root = (project in file(".")).
 
     mappings in Universal ++= {
       val launchJar = sbtLaunchJar.value
-      val rtExportJar = rtExportUsingCoursier.value
       Seq(
-        launchJar -> "bin/sbt-launch.jar",
+        launchJar -> "bin/sbt-launch.jar"
-        rtExportJar -> "bin/java9-rt-export.jar"
       ) ++ sbtnJarsMappings.value
     },
     mappings in Universal ++= (Def.taskDyn {
@@ -432,7 +418,7 @@ lazy val dist = (project in file("dist"))
       if (sbtVersionToRelease startsWith "0.13.") scala210
       else scala212
     },
-    libraryDependencies ++= Seq(sbtActual, java9rtexport, jansi, scala212Compiler, scala212Jline, scala212Xml) ++ sbt013ExtraDeps,
+    libraryDependencies ++= Seq(sbtActual, jansi, scala212Compiler, scala212Jline, scala212Xml) ++ sbt013ExtraDeps,
     exportRepo := {
       val old = exportRepo.value
       sbtVersionToRelease match {

src/universal/bin/sbt

@@ -105,10 +105,6 @@ acquire_sbt_jar () {
   fi
 }
 
-rt_export_file () {
-  echo "$(cygwinpath "${sbt_bin_dir}/java9-rt-export.jar")"
-}
-
 # execRunner should be called only once to give up control to java
 execRunner () {
   # print the arguments one to a line, quoting any containing spaces
@@ -337,10 +333,9 @@ checkJava() {
 copyRt() {
   local at_least_9="$(expr $java_version ">=" 9)"
   if [[ "$at_least_9" == "1" ]]; then
-    rtexport=$(rt_export_file)
     # The grep for java9-rt-ext- matches the filename prefix printed in Export.java
     java9_ext=$("$java_cmd" "${sbt_options[@]}" "${java_args[@]}" \
-      -jar "$rtexport" --rt-ext-dir | grep java9-rt-ext- | tr -d '\r')
+      -jar "$sbt_jar" --rt-ext-dir | grep java9-rt-ext- | tr -d '\r')
     java9_rt=$(echo "$java9_ext/rt.jar")
     vlog "[copyRt] java9_rt = '$java9_rt'"
     if [[ ! -f "$java9_rt" ]]; then
@@ -349,7 +344,8 @@ copyRt() {
       "$java_cmd" \
         "${sbt_options[@]}" \
         "${java_args[@]}" \
-        -jar "$rtexport" \
+        -jar "$sbt_jar" \
+        --export-rt \
         "${java9_rt}"
     fi
     addJava "-Dscala.ext.dirs=${java9_ext}"

src/universal/bin/sbt.bat

@@ -530,6 +530,14 @@ if !run_native_client! equ 1 (
 
 call :checkjava
 
+if defined sbt_args_sbt_jar (
+  set "sbt_jar=!sbt_args_sbt_jar!"
+) else (
+  set "sbt_jar=!SBT_HOME!\bin\sbt-launch.jar"
+)
+
+set sbt_jar=!sbt_jar:"=!
+
 call :copyrt
 
 if defined JVM_DEBUG_PORT (
@@ -601,14 +609,6 @@ if defined sbt_args_traces (
   set _SBT_OPTS=-Dsbt.traces=true !_SBT_OPTS!
 )
 
-if defined sbt_args_sbt_jar (
-  set "sbt_jar=!sbt_args_sbt_jar!"
-) else (
-  set "sbt_jar=!SBT_HOME!\bin\sbt-launch.jar"
-)
-
-set sbt_jar=!sbt_jar:"=!
-
 rem TODO: _SBT_OPTS needs to be processed as args and diffed against SBT_ARGS
 
 if !sbt_args_print_sbt_version! equ 1 (
@@ -872,15 +872,13 @@ exit /B 1
 
 :copyrt
 if /I !JAVA_VERSION! GEQ 9 (
-  set "rtexport=!SBT_BIN_DIR!java9-rt-export.jar"
+  "!_JAVACMD!" !_JAVA_OPTS! !_SBT_OPTS! -jar "!sbt_jar!" --rt-ext-dir > "%TEMP%.\rtext.txt"
-
-  "!_JAVACMD!" !_JAVA_OPTS! !_SBT_OPTS! -jar "!rtexport!" --rt-ext-dir > "%TEMP%.\rtext.txt"
   set /p java9_ext= < "%TEMP%.\rtext.txt"
   set "java9_rt=!java9_ext!\rt.jar"
 
   if not exist "!java9_rt!" (
     mkdir "!java9_ext!"
-    "!_JAVACMD!" !_JAVA_OPTS! !_SBT_OPTS! -jar "!rtexport!" "!java9_rt!"
+    "!_JAVACMD!" !_JAVA_OPTS! !_SBT_OPTS! -jar "!sbt_jar!" --export-rt "!java9_rt!"
   )
   set _JAVA_OPTS=!_JAVA_OPTS! -Dscala.ext.dirs="!java9_ext!"
 )