From c0acb02efd4c073bba8ee4b7ded7b1812df430a0 Mon Sep 17 00:00:00 2001
From: Alexandre Archambault <alexandre.archambault@gmail.com>
Date: Fri, 9 Aug 2019 16:18:29 +0200
Subject: [PATCH 1/2] Check that lmcoursier is the only ns in
 lm-coursier-shaded JAR

---
 build.sbt           |  8 +++++++-
 project/Check.scala | 25 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 project/Check.scala

diff --git a/build.sbt b/build.sbt
index 1c9db2cfd..d67143944 100644
--- a/build.sbt
+++ b/build.sbt
@@ -58,7 +58,13 @@ lazy val `lm-coursier-shaded` = project
       "org.scala-lang.modules" %% "scala-xml" % "1.2.0", // depending on that one so that it doesn't get shaded
       "org.scala-sbt" %% "librarymanagement-ivy" % "1.2.4",
       "org.scalatest" %% "scalatest" % "3.0.8" % Test
-    )
+    ),
+    packageBin.in(Shading) := {
+      val jar = packageBin.in(Shading).value
+      // ignoreFiles is there temporarily, until https://github.com/coursier/coursier/pull/1317 is merged
+      Check.onlyNamespace("lmcoursier", jar, ignoreFiles = Set("coursier.properties"))
+      jar
+    }
   )
 
 lazy val `sbt-coursier-shared` = project
diff --git a/project/Check.scala b/project/Check.scala
new file mode 100644
index 000000000..4028caa34
--- /dev/null
+++ b/project/Check.scala
@@ -0,0 +1,25 @@
+import java.io.File
+import java.util.zip.ZipFile
+
+import scala.collection.JavaConverters._
+
+object Check {
+
+  def onlyNamespace(ns: String, jar: File, ignoreFiles: Set[String] = Set.empty): Unit = {
+    val zf = new ZipFile(jar)
+    val unrecognized = zf.entries()
+      .asScala
+      .map(_.getName)
+      .filter { n =>
+        !n.startsWith("META-INF/") && !n.startsWith(ns + "/") &&
+          n != "reflect.properties" && // scala-reflect adds that
+          !ignoreFiles(n)
+      }
+      .toVector
+      .sorted
+    for (u <- unrecognized)
+      System.err.println(s"Unrecognized: $u")
+    assert(unrecognized.isEmpty)
+  }
+
+}

From bd4a2d5adf3db409a8c30897605f742095f9e5f0 Mon Sep 17 00:00:00 2001
From: Alexandre Archambault <alexandre.archambault@gmail.com>
Date: Fri, 9 Aug 2019 16:19:35 +0200
Subject: [PATCH 2/2] Add extra namespaces in shading config

These aren't required, but passing them beforehand speeds up shading
---
 build.sbt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/build.sbt b/build.sbt
index d67143944..6b253ab24 100644
--- a/build.sbt
+++ b/build.sbt
@@ -51,7 +51,9 @@ lazy val `lm-coursier-shaded` = project
     shadeNamespaces ++= Set(
       "coursier",
       "shapeless",
-      "argonaut"
+      "argonaut",
+      "org.fusesource",
+      "org.jline"
     ),
     libraryDependencies ++= Seq(
       "io.get-coursier" %% "coursier" % coursierVersion0 % "shaded",