closes #5407

src/plugins/hooks.js

@@ -8,7 +8,9 @@ module.exports = function (Plugins) {
 		'filter:user.custom_fields': null,	// remove in v1.1.0
 		'filter:post.save': 'filter:post.create',
 		'filter:user.profileLinks': 'filter:user.profileMenu',
-		'action:post.flag': 'action:flag.create'
+		'action:post.flag': 'action:flag.create',
+		'action:plugin.activate': null,
+		'action:plugin.install': null
 	};
 	/*
 		`data` is an object consisting of (* is required):

src/plugins/install.js

@@ -50,8 +50,11 @@ module.exports = function (Plugins) {
 			},
 			function (next) {
 				meta.reloadRequired = true;
-				Plugins.fireHook(isActive ? 'action:plugin.deactivate' : 'action:plugin.activate', {id: id});
+				if (isActive) {
-				next();
+					Plugins.fireHook('action:plugin.deactivate', {id: id});
+				}
+
+				setImmediate(next);
 			}
 		], function (err) {
 			if (err) {
@@ -68,7 +71,6 @@ module.exports = function (Plugins) {
 	};
 
 	function toggleInstall(id, version, callback) {
-		var type;
 		var installed;
 		async.waterfall([
 			function (next) {
@@ -76,7 +78,6 @@ module.exports = function (Plugins) {
 			},
 			function (_installed, next) {
 				installed = _installed;
-				type = installed ? 'uninstall' : 'install';
 				Plugins.isActive(id, next);
 			},
 			function (active, next) {
@@ -86,17 +87,20 @@ module.exports = function (Plugins) {
 					});
 					return;
 				}
-				next();
+				setImmediate(next);
 			},
 			function (next) {
-				runNpmCommand(type, id, version || 'latest', next);
+				runNpmCommand(installed ? 'uninstall' : 'install', id, version || 'latest', next);
 			},
 			function (next) {
 				Plugins.get(id, next);
 			},
 			function (pluginData, next) {
-				Plugins.fireHook('action:plugin.' + type, {id: id, version: version});
+				if (installed) {
-				next(null, pluginData);
+					Plugins.fireHook('action:plugin.uninstall', {id: id, version: version});
+				}
+
+				setImmediate(next, null, pluginData);
 			}
 		], callback);
 	}

src/plugins/load.js

@@ -88,7 +88,7 @@ module.exports = function (Plugins) {
 				},
 				function (next) {
 					mapClientModules(pluginData, next);
-				},
+				}
 			], function (err) {
 				if (err) {
 					winston.verbose('[plugins] Could not load plugin : ' + pluginData.id);