--TEST--
Test that providers are not installed unless really required by something
--COMPOSER--
{
    "repositories": [
        {
            "type": "package",
            "package": [
                {
                    "name": "foo/polyfill",
                    "provide": {
                        "foo/requirement": "1.0.0"
                    },
                    "version": "1.0.0"
                },
                {
                    "name": "foo/indirect",
                    "require": {
                        "foo/polyfill": "1.0.0"
                    },
                    "version": "1.0.0"
                },
                {
                    "name": "foo/indirect",
                    "version": "1.0.1"
                },
                {
                    "name": "foo/requirement",
                    "require": {
                        "foo/does-not-exist": "1.0.0"
                    },
                    "version": "1.0.0"
                }
            ]
        }
    ],
    "require": {
        "foo/requirement": "1.0.0",
        "foo/indirect": "^1.0"
    }
}

--RUN--
update

--EXPECT--
Installing foo/polyfill (1.0.0)
Installing foo/indirect (1.0.0)