Satis downloads nothing from packagist.org

Question

I've a problem with the Satis configuration. I've the following satis.json:

{
    "name": "Composer Test Repository",
    "homepage": "https://example.com",
    "repositories": [
        {
            "type": "composer",
            "url": "https://packagist.org"
        }
    ],
    "require": {
        "zendframework/zend-mvc": "*"
    },
    "archive": {
        "directory": "dist",
        "format": "zip",
        "skip-dev": true
    },
    "require-dependencies": true,
    "require-dev-dependencies": true,
    "providers": true
}

Then I start the build process by executing:

php satis.phar build -- satis.json /mypath

But the zend-mvc library is not downloaded and there will be no errors displayed.