From 3ce46663b92e268d775c543b6b5f3bf7c1937c2f Mon Sep 17 00:00:00 2001
From: Mathias Buus <mathiasbuus@gmail.com>
Date: Wed, 9 Dec 2015 16:16:56 +0100
Subject: [PATCH] allow rebuilds. fixes #78

---
 npm/install.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/npm/install.js b/npm/install.js
index 034153b605..917d6680ed 100755
--- a/npm/install.js
+++ b/npm/install.js
@@ -9,6 +9,13 @@ var path = require('path')
 var extract = require('extract-zip')
 var download = require('electron-download')
 
+var installedVersion = null
+try {
+  installedVersion = fs.readFileSync(path.join(__dirname, 'dist', 'version'), 'utf-8').replace(/^v/, '')
+} catch (err) {
+  // do nothing
+}
+
 var platform = os.platform()
 
 function onerror (err) {
@@ -23,6 +30,10 @@ var paths = {
 
 if (!paths[platform]) throw new Error('Unknown platform: ' + platform)
 
+if (installedVersion === version && fs.existsSync(paths[platform])) {
+  return
+}
+
 // downloads if not cached
 download({version: version, arch: process.env.npm_config_arch}, extractFile)