Merge pull request #71 from nathf/master

Add support for differing yarn versions

README.md

@@ -72,6 +72,9 @@ node_version=5.3.0
 # We can set the version of NPM to use for the app here
 npm_version=2.10.1
 
+# We can set the version of Yarn to use for the app here
+yarn_version=1.13.0
+
 # We can set the path to phoenix app. E.g. apps/phoenix_app when in umbrella.
 phoenix_relative_path=.
 

lib/build.sh

@@ -89,8 +89,14 @@ install_npm() {
 install_yarn() {
   local dir="$1"
 
-  echo "Downloading and installing yarn..."
-  local download_url="https://yarnpkg.com/latest.tar.gz"
+  if [ ! $yarn_version ]; then
+    echo "Downloading and installing yarn lastest..."
+    local download_url="https://yarnpkg.com/latest.tar.gz"
+  else
+    echo "Downloading and installing yarn $yarn_version..."
+    local download_url="https://yarnpkg.com/downloads/$yarn_version/yarn-v$yarn_version.tar.gz"
+  fi
+
   local code=$(curl "$download_url" -L --silent --fail --retry 5 --retry-max-time 15 -o /tmp/yarn.tar.gz --write-out "%{http_code}")
   if [ "$code" != "200" ]; then
     echo "Unable to download yarn: $code" && false

phoenix_static_buildpack.config

@@ -1,6 +1,7 @@
 clean_cache=false
 compile="compile"
 node_version=6.9.2
+yarn_version=0.27.5
 phoenix_relative_path=.
 remove_node=false
 assets_path=.