diff -urp dist/package.json patched/package.json
--- dist/package.json	2017-02-01 01:23:37.000000000 +0000
+++ patched/package.json	2017-02-01 01:23:50.000000000 +0000
@@ -1,6 +1,6 @@
 {
   "name": "yarn",
-  "installationMethod": "tar",
+  "installationMethod": "apk",
   "version": "0.21.3",
   "license": "BSD-2-Clause",
   "preferGlobal": true,