fix version constraint

Author: IonBazan

README.md

@@ -1,47 +1,18 @@
 # Composer Diff Plugin
 
+[![Latest version](https://img.shields.io/packagist/v/ion-bazan/composer-diff.svg)](https://packagist.org/packages/ion-bazan/composer-diff)
+[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/IonBazan/composer-diff/Tests)](https://github.com/IonBazan/composer-diff/actions)
+[![PHP version](https://img.shields.io/packagist/php-v/ion-bazan/composer-diff.svg)](https://packagist.org/packages/ion-bazan/composer-diff)
+[![Codecov](https://img.shields.io/codecov/c/gh/IonBazan/composer-diff)](https://codecov.io/gh/IonBazan/composer-diff)
+[![Downloads](https://img.shields.io/packagist/dt/ion-bazan/composer-diff.svg)](https://packagist.org/packages/ion-bazan/composer-diff)
+[![License](https://img.shields.io/packagist/l/ion-bazan/composer-diff.svg)](https://packagist.org/packages/ion-bazan/composer-diff)
+
 Generates packages changes report in Markdown format by comparing `composer.lock` files. Compares with last-commited changes by default.
 
 ![preview](preview.gif)
 
 ## Example output
 
-```
-| Prod Packages                      | Base    | Target  |
-|------------------------------------|---------|---------|
-| psr/event-dispatcher               | New     | 1.0.0   |
-| symfony/deprecation-contracts      | New     | v2.1.2  |
-| symfony/event-dispatcher           | v2.8.52 | v5.1.2  |
-| symfony/event-dispatcher-contracts | New     | v2.1.2  |
-| symfony/polyfill-php80             | New     | v1.17.1 |
-| php                                | New     | >=5.3   |
-
-| Dev Packages                       | Base  | Target  |
-|------------------------------------|-------|---------|
-| phpunit/php-code-coverage          | 8.0.2 | 7.0.10  |
-| phpunit/php-file-iterator          | 3.0.2 | 2.0.2   |
-| phpunit/php-text-template          | 2.0.1 | 1.2.1   |
-| phpunit/php-timer                  | 5.0.0 | 2.1.2   |
-| phpunit/php-token-stream           | 4.0.2 | 3.1.1   |
-| phpunit/phpunit                    | 9.2.5 | 8.5.8   |
-| sebastian/code-unit-reverse-lookup | 2.0.1 | 1.0.1   |
-| sebastian/comparator               | 4.0.2 | 3.0.2   |
-| sebastian/diff                     | 4.0.1 | 3.0.2   |
-| sebastian/environment              | 5.1.1 | 4.2.3   |
-| sebastian/exporter                 | 4.0.1 | 3.1.2   |
-| sebastian/global-state             | 4.0.0 | 3.0.0   |
-| sebastian/object-enumerator        | 4.0.1 | 3.0.3   |
-| sebastian/object-reflector         | 2.0.1 | 1.1.1   |
-| sebastian/recursion-context        | 4.0.1 | 3.0.0   |
-| sebastian/resource-operations      | 3.0.1 | 2.0.1   |
-| sebastian/type                     | 2.1.0 | 1.1.3   |
-| sebastian/version                  | 3.0.0 | 2.0.1   |
-| phpunit/php-invoker                | 3.0.1 | Removed |
-| sebastian/code-unit                | 1.0.3 | Removed |
-```
-
-## Rendered: 
-
 | Prod Packages                      | Base    | Target  |
 |------------------------------------|---------|---------|
 | psr/event-dispatcher               | New     | 1.0.0   |

composer-diff

@@ -11,9 +11,20 @@ foreach ([__DIR__.'/../../autoload.php', __DIR__.'/../autoload.php', __DIR__.'/v
 unset($file);
 
 use IonBazan\ComposerDiff\Command\DiffCommand;
+use IonBazan\ComposerDiff\PackageDiff;
 use Symfony\Component\Console\Application;
 
+if (!class_exists('Symfony\Component\Console\Application')) {
+    echo 'Please install symfony/console >= 2.3 to use this binary or use composer diff instead.'.PHP_EOL;
+    exit(1);
+}
+
+if (!class_exists('Composer\Package\CompletePackage')) {
+    echo 'Please install composer/composer >= 1.1 to use this binary or use composer diff instead.'.PHP_EOL;
+    exit(1);
+}
+
 $application = new Application();
-$application->add(new DiffCommand());
-$application->setDefaultCommand('diff',  true);
+$application->add(new DiffCommand(new PackageDiff()));
+$application->setDefaultCommand('diff', true);
 $application->run();

composer.json

@@ -20,15 +20,19 @@
         }
     ],
     "require": {
-        "php": "^5.3.2 || ^7.0 || ^8.0",
+        "php": ">=5.3.2",
         "ext-json": "*",
         "composer-plugin-api": "^1.1 || ^2.0"
     },
     "require-dev": {
-        "composer/composer": "^1.1 || ^2.0",
+        "composer/composer": "^1.1 || ^2.0@dev",
         "symfony/console": "^2.3 || ^3.0 || ^4.0 || ^5.0",
         "symfony/phpunit-bridge": "^4.2 || ^5.0"
     },
+    "suggest": {
+        "composer/composer": "To use the binary without composer runtime",
+        "symfony/console": "To use the binary without composer runtime"
+    },
     "config": {
         "platform": {
             "php": "5.3.9"

src/Plugin.php

@@ -32,4 +32,12 @@ public function getCapabilities()
             'Composer\Plugin\Capability\CommandProvider' => 'IonBazan\ComposerDiff\Plugin',
         );
     }
+
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
 }