From 903107268580615c9545606b47d9891f30e61b52 Mon Sep 17 00:00:00 2001
From: Li Haoyi <haoyi.sg@gmail.com>
Date: Mon, 8 Jul 2019 08:03:34 +0800
Subject: make use of mill file if it exists and we're not already using it

---
 build.sc | 12 +++++-------
 mill     |  2 ++
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/build.sc b/build.sc
index db56d39a..de2a66cd 100755
--- a/build.sc
+++ b/build.sc
@@ -522,11 +522,7 @@ object dev extends MillModule{
     if (isWin) {
       windowsVmOptions("dev.launcher", outputPath, forkArgs())
     } else {
-      val perms = java.nio.file.Files.getPosixFilePermissions(outputPath.toNIO)
-      perms.add(PosixFilePermission.GROUP_EXECUTE)
-      perms.add(PosixFilePermission.OWNER_EXECUTE)
-      perms.add(PosixFilePermission.OTHERS_EXECUTE)
-      java.nio.file.Files.setPosixFilePermissions(outputPath.toNIO, perms)
+      os.perms.set(outputPath, "rwxrwxrwx")
     }
     PathRef(outputPath)
   }
@@ -608,16 +604,18 @@ def assembly = T{
 def millBootstrap = T.sources(os.pwd / "mill")
 
 def launcher = T{
+  val outputPath = T.ctx().dest / "mill"
   val millBootstrapGrepPrefix = "DEFAULT_MILL_VERSION="
   os.write(
-    T.ctx().dest / "mill",
+    outputPath,
     os.read(millBootstrap().head.path)
       .replaceAll(
         millBootstrapGrepPrefix + "[^\\n]+",
         millBootstrapGrepPrefix + publishVersion()._2
       )
   )
-  PathRef(T.ctx().dest / "mill")
+  os.perms.set(outputPath, "rwxrwxrwx")
+  PathRef(outputPath)
 }
 
 val isMasterCommit = {
diff --git a/mill b/mill
index 0e6cfd2a..a3c1664c 100755
--- a/mill
+++ b/mill
@@ -10,6 +10,8 @@ set -e
 if [ -z "$MILL_VERSION" ] ; then
   if [ -f ".mill-version" ] ; then
     MILL_VERSION="$(head -n 1 .mill-version 2> /dev/null)"
+  elif [ -f "mill" ] && [ "$BASH_SOURCE" != "mill" ] ; then
+    MILL_VERSION=$(grep -F "DEFAULT_MILL_VERSION=" "mill" | cut -c $cutCount-)
   else
     MILL_VERSION=$DEFAULT_MILL_VERSION
   fi
-- 
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