From 598705e8d251a348bbfb12c59fe55e04fc11bac2 Mon Sep 17 00:00:00 2001
From: Nicolas Stucki <nicolas.stucki@gmail.com>
Date: Thu, 23 Mar 2017 15:14:48 +0100
Subject: Add a warning and instructions for new users.

---
 project/Build.scala | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'project')

diff --git a/project/Build.scala b/project/Build.scala
index f702e3563..05ae52cc9 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -12,6 +12,8 @@ import sbt.Package.ManifestAttributes
 
 object DottyBuild extends Build {
 
+  projectChecks()
+
   val scalacVersion = "2.11.5" // Do not rename, this is grepped in bin/common.
 
   val dottyOrganization = "ch.epfl.lamp"
@@ -903,4 +905,15 @@ object DottyInjectedPlugin extends AutoPlugin {
       }
     ))
   }
+
+  private def projectChecks(): Unit = {
+    val scalaScala = new File("scala-scala")
+    if (!scalaScala.exists()) {
+      println(
+        s"""[WARNING] Missing `dotty/scala-scala` library
+           |You can clone the library with:
+           |  > git clone -b dotty-library https://github.com/DarkDimius/scala.git ${scalaScala.getAbsolutePath}
+        """.stripMargin)
+    }
+  }
 }
-- 
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