First prototype

.gitignore

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+/vendor
+/composer.lock
+/composer.phar

composer.json

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+{
+    "name": "clue/graph-composer",
+    "require": {
+        "clue/graph": "0.5",
+        "jms/composer-deps-analyzer": "dev-master"
+    }
+}

graph-composer.php

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+<?php
+
+use Fhaculty\Graph\GraphViz;
+use Fhaculty\Graph\Graph;
+
+require_once __DIR__ . '/vendor/autoload.php';
+
+// directory to scan
+$dir = isset($argv[1]) ? $argv[1] : __DIR__;
+
+$analyzer = new \JMS\Composer\DependencyAnalyzer();
+$dependencyGraph = $analyzer->analyze($dir);
+
+$graph = new Graph();
+
+foreach ($dependencyGraph->getPackages() as $package) {
+    $name = $package->getName();
+    $start = $graph->createVertex($name, true);
+    $start->setLayout(array(
+        'label' => $name . ': ' . $package->getVersion(),
+        'fillcolor' => '#eeeeee',
+        'style' => 'filled',
+        'shape' => 'box'
+    ));
+
+    foreach ($package->getOutEdges() as $requires) {
+        $targetName = $requires->getDestPackage()->getName();
+        $target = $graph->createVertex($targetName, true);
+        $start->createEdgeTo($target)->setLayout(array(
+            'label' => $requires->getVersionConstraint(),
+            'fontcolor' => '#999999',
+            'fontsize' => 10
+        ));
+    }
+}
+
+$graph->getVertex($dependencyGraph->getRootPackage()->getName())->setLayout(array(
+    'fontcolor' => 'red'
+));
+
+$graphviz = new GraphViz($graph);
+$graphviz->setFormat('svg');
+$graphviz->display();