Adds flag to allow suggestions to be skipped

src/Composer/Command/InstallCommand.php

@@ -43,6 +43,7 @@ class InstallCommand extends BaseCommand
                 new InputOption('no-autoloader', null, InputOption::VALUE_NONE, 'Skips autoloader generation'),
                 new InputOption('no-scripts', null, InputOption::VALUE_NONE, 'Skips the execution of all scripts defined in composer.json file.'),
                 new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
+                new InputOption('no-suggest', null, InputOption::VALUE_NONE, 'Do not show package suggestions.'),
                 new InputOption('verbose', 'v|vv|vvv', InputOption::VALUE_NONE, 'Shows more details including new commits pulled in when updating packages.'),
                 new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
                 new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
@@ -121,6 +122,7 @@ EOT
             ->setDevMode(!$input->getOption('no-dev'))
             ->setDumpAutoloader(!$input->getOption('no-autoloader'))
             ->setRunScripts(!$input->getOption('no-scripts'))
+            ->setSkipSuggest($input->getOption('no-suggest'))
             ->setOptimizeAutoloader($optimize)
             ->setClassMapAuthoritative($authoritative)
             ->setIgnorePlatformRequirements($input->getOption('ignore-platform-reqs'))

src/Composer/Installer.php

@@ -114,6 +114,7 @@ class Installer
     protected $ignorePlatformReqs = false;
     protected $preferStable = false;
     protected $preferLowest = false;
+    protected $skipSuggest = false;
     /**
      * Array of package names/globs flagged for update
      *
@@ -228,7 +229,7 @@ class Installer
         }
 
         // output suggestions if we're in dev mode
-        if ($this->devMode) {
+        if ($this->devMode && !$this->skipSuggest) {
             $this->suggestedPackagesReporter->output($installedRepo);
         }
 
@@ -1600,6 +1601,19 @@ class Installer
         return $this;
     }
 
+    /**
+     * Should suggestions be skipped?
+     *
+     * @param  bool      $skipSuggest
+     * @return Installer
+     */
+    public function setSkipSuggest($skipSuggest = false)
+    {
+        $this->skipSuggest = (boolean) $skipSuggest;
+
+        return $this;
+    }
+
     /**
      * Disables plugins.
      *