diff --git a/install/web.js b/install/web.js
index 8dbbeec278..3a6ad41aae 100644
--- a/install/web.js
+++ b/install/web.js
@@ -10,7 +10,6 @@ var less = require('less');
 var async = require('async');
 var uglify = require('uglify-js');
 var nconf = require('nconf');
-var _ = require('lodash');
 var Benchpress = require('benchpressjs');
 
 var app = express();
@@ -56,7 +55,7 @@ web.install = function (port) {
 		extended: true,
 	}));
 
-	async.parallel([compileLess, compileJS, copyCSS], function (err) {
+	async.parallel([compileLess, compileJS, copyCSS, loadDefaults], function (err) {
 		if (err) {
 			winston.error(err);
 		}
@@ -111,13 +110,24 @@ function welcome(req, res) {
 
 function install(req, res) {
 	req.setTimeout(0);
-	var setupEnvVars = _.assign({}, process.env);
+	var setupEnvVars = nconf.get();
 	for (var i in req.body) {
 		if (req.body.hasOwnProperty(i) && !process.env.hasOwnProperty(i)) {
 			setupEnvVars[i.replace(':', '__')] = req.body[i];
 		}
 	}
 
+	// Flatten any objects in setupEnvVars
+	const pushToRoot = function (parentKey, key) {
+		setupEnvVars[parentKey + '__' + key] = setupEnvVars[parentKey][key];
+	};
+	for (var j in setupEnvVars) {
+		if (setupEnvVars.hasOwnProperty(j) && typeof setupEnvVars[j] === 'object' && setupEnvVars[j] !== null) {
+			Object.keys(setupEnvVars[j]).forEach(pushToRoot.bind(null, j));
+			delete setupEnvVars[j];
+		}
+	}
+
 	var child = require('child_process').fork('app', ['--setup'], {
 		env: setupEnvVars,
 	});
@@ -137,15 +147,25 @@ function launch(req, res) {
 	res.json({});
 	server.close();
 
-	var child = childProcess.spawn('node', ['loader.js'], {
-		detached: true,
-		stdio: ['ignore', 'ignore', 'ignore'],
-	});
+	var child;
 
-	console.log('\nStarting NodeBB');
-	console.log('    "./nodebb stop" to stop the NodeBB server');
-	console.log('    "./nodebb log" to view server output');
-	console.log('    "./nodebb restart" to restart NodeBB');
+	if (!nconf.get('launchCmd')) {
+		child = childProcess.spawn('node', ['loader.js'], {
+			detached: true,
+			stdio: ['ignore', 'ignore', 'ignore'],
+		});
+
+		console.log('\nStarting NodeBB');
+		console.log('    "./nodebb stop" to stop the NodeBB server');
+		console.log('    "./nodebb log" to view server output');
+		console.log('    "./nodebb restart" to restart NodeBB');
+	} else {
+		// Use launchCmd instead, if specified
+		child = childProcess.exec(nconf.get('launchCmd'), {
+			detached: true,
+			stdio: ['ignore', 'ignore', 'ignore'],
+		});
+	}
 
 	var filesToDelete = [
 		'installer.css',
@@ -221,4 +241,20 @@ function copyCSS(next) {
 	], next);
 }
 
+function loadDefaults(next) {
+	var setupDefaultsPath = path.join(__dirname, './data/setup.json');
+	fs.access(setupDefaultsPath, fs.constants.F_OK | fs.constants.R_OK, function (err) {
+		if (err) {
+			// setup.json not found or inaccessible, proceed with no defaults
+			return setImmediate(next);
+		}
+
+		nconf.file({
+			file: setupDefaultsPath,
+		});
+
+		next();
+	});
+}
+
 module.exports = web;