core/bin/generate-installed-sixshop.php

<?php

declare(strict_types=1);

const EXTENSION_TYPE = 'sixshop-extension';

$dir = __DIR__;
while (!is_file($dir . '/vendor/composer/installed.php')) {
    $parent = dirname($dir);
    if ($parent === $dir) {
        fwrite(STDERR, "Unable to locate vendor/composer/installed.php\n");
        exit(1);
    }
    $dir = $parent;
}
$vendorDir = $dir . '/vendor';

$installed = require $vendorDir . '/composer/installed.php';

$installedSixShopExtensions = [
    'root' => [],
    'versions' => [],
];
$referenceMap = [];
foreach ($installed['versions'] as $name => $package) {
    if (isset($package['type']) && $package['type'] === EXTENSION_TYPE) {
        $installedSixShopExtensions['versions'][$name] = $package;
        $referenceMap[$name] = $package['reference'];
    }
}
$installedSixShopExtensions['root']['reference'] = hash('md5', json_encode($referenceMap));

$filePath = $vendorDir . '/composer/installedSixShop.php';
file_put_contents($filePath, '<?php return ' . var_export($installedSixShopExtensions, true) . ';');