Revamp build steps

* Instead of providing the binaries with the package, it'll only download the
needed binary for the users system.
* Will only build if the tests fail.
* Move `build.js` into scripts since it's not part of the actual API.
* Move binaries to `vendor` folder to keep it separate from the rest of the code.

Fixes #504.

.gitignore

 *.log
 .DS_Store
 .sass-cache
-bin
-!bin/node-sass
 build
 lib-cov
 node_modules
+vendor

lib/index.js

@@ -13,7 +13,7 @@ function getBinding() {
   var candidates = [
     path.join(__dirname, '..', 'build', 'Release', 'binding.node'),
     path.join(__dirname, '..', 'build', 'Debug', 'binding.node'),
-    path.join(__dirname, '..', 'bin', name, 'binding.node')
+    path.join(__dirname, '..', 'vendor', name, 'binding.node')
   ];
 
   var candidate = candidates.filter(fs.existsSync)[0];

package.json

@@ -20,8 +20,8 @@
   "gypfile": true,
   "scripts": {
     "coverage": "node scripts/coverage.js",
-    "install": "node lib/build.js",
-    "prepublish": "node scripts/prepublish",
+    "install": "node scripts/install.js",
+    "postinstall": "node scripts/build.js",
     "pretest": "node_modules/.bin/jshint bin lib test",
     "test": "node_modules/.bin/mocha test"
   },
@@ -44,14 +44,15 @@
   "dependencies": {
     "chalk": "^0.5.1",
     "cross-spawn": "^0.2.3",
+    "download": "^3.1.2",
+    "download-status": "^2.1.0",
     "get-stdin": "^3.0.0",
     "meow": "^2.0.0",
     "mkdirp": "^0.5.0",
     "mocha": "^2.0.1",
     "nan": "^1.3.0",
     "node-watch": "^0.3.4",
-    "object-assign": "^1.0.0",
-    "shelljs": "^0.3.0"
+    "object-assign": "^1.0.0"
   },
   "devDependencies": {
     "coveralls": "^2.11.1",

lib/build.js → scripts/build.js

-#!/usr/bin/env node
 var fs = require('fs'),
     path = require('path'),
     spawn = require('child_process').spawn,
+    mkdir = require('mkdirp'),
     Mocha = require('mocha');
 
 /**
@@ -14,24 +14,24 @@ var fs = require('fs'),
 function afterBuild(options) {
   var folder = options.debug ? 'Debug' : 'Release';
   var target = path.join(__dirname, '..', 'build', folder, 'binding.node');
-  var install = path.join(__dirname, '..', 'bin', options.bin, 'binding.node');
+  var install = path.join(__dirname, '..', 'vendor', options.bin, 'binding.node');
 
-  fs.mkdir(path.join(__dirname, '..', 'bin', options.bin), function (err) {
+  mkdir(path.join(__dirname, '..', 'vendor', options.bin), function (err) {
     if (err && err.code !== 'EEXIST') {
       console.error(err.message);
-      process.exit(1);
+      return;
     }
 
     fs.stat(target, function (err) {
       if (err) {
         console.error('Build succeeded but target not found');
-        process.exit(1);
+        return;
       }
 
       fs.rename(target, install, function (err) {
         if (err) {
           console.error(err.message);
-          process.exit(1);
+          return;
         }
 
         console.log('Installed in `' + install + '`');
@@ -61,11 +61,11 @@ function build(options) {
           'You need at least 1.1.5 (I think) and preferably 1.1.30.'
         ].join(' '));
 
-        process.exit(code);
+        return;
       }
 
       console.error('Build failed');
-      process.exit(code);
+      return;
     }
 
     afterBuild(options);
@@ -120,7 +120,7 @@ function testBinary(options) {
   }
 
   if (!process.env.SKIP_NODE_SASS_TESTS) {
-    fs.stat(path.join(__dirname, '..', 'bin', options.bin, 'binding.node'), function (err) {
+    fs.stat(path.join(__dirname, '..', 'vendor', options.bin, 'binding.node'), function (err) {
       if (err) {
         return build(options);
       }

scripts/install.js

+var fs = require('fs'),
+    path = require('path'),
+    Download = require('download'),
+    status = require('download-status');
+
+/**
+ * Check if binaries exists
+ *
+ * @api private
+ */
+
+function exists() {
+  var v8 = 'v8-' + /[0-9]+\.[0-9]+/.exec(process.versions.v8)[0];
+  var name = process.platform + '-' + process.arch + '-' + v8;
+
+  fs.exists(path.join(__dirname, '..', 'vendor', name), function (exists) {
+    if (exists) {
+      return;
+    }
+
+    fetch(name);
+  });
+}
+
+/**
+ * Fetch binaries
+ *
+ * @param {String} name
+ * @api private
+ */
+
+function fetch(name) {
+  var download = new Download({
+    extract: true,
+    mode: '777',
+    strip: 1
+  });
+
+  var url = [
+    'https://github.com/sass/node-sass-binaries/raw/master/',
+    name + '/binding.node'
+  ].join('');
+
+  download.get(url);
+  download.dest(path.join(__dirname, '..', 'vendor', name));
+  download.use(status());
+
+  download.run(function(err) {
+    if (err) {
+      console.error(err.message);
+      return;
+    }
+
+    console.log('Binary installed in ' + download.dest());
+  });
+}
+
+/**
+ * Skip if CI
+ */
+
+if (process.env.CI || process.env.APPVEYOR) {
+  console.log('Skipping downloading binaries on CI builds');
+  return;
+}
+
+/**
+ * Run
+ */
+
+exists();

scripts/prepublish

-#!/usr/bin/env node
-/*jshint shelljs:true */
-
-"use strict";
-
-require('shelljs/make');
-
-if (env["$CI"]) {
-	echo("Skipping prepublish on CI builds");
-	exit(0);
-}
-
-// Look for a local clone of
-var NODE_SASS_BINARIES_DIR = "../node-sass-binaries";
-
-if (!test("-e", NODE_SASS_BINARIES_DIR)) {
-
-	if (!which("git")) {
-		echo("Sorry, this script requires git");
-		exit(1);
-	}
-
-	// Clone the binary repo to the expected location
-	var NODE_SASS_DIR = pwd();
-	cd("..");
-	exec("git clone https://github.com/sass/node-sass-binaries.git")
-
-	cd(NODE_SASS_DIR);
-}
-
-echo("Copying binaries to bin");
-cp("-Rf", NODE_SASS_BINARIES_DIR + "/*", "bin");
-rm(["bin/LICENSE", "bin/README.md"]);