Require doctrine/mbongodb without ext-mongo

failing-composer.json

{
    "name": "frankdejonge/tester",
    "require": {
        "doctrine/mongodb": "*"
    },
    "minimun-stability": "dev",
    "prefer-stable": true
}

succeeding-composer.json

{
    "name": "frankdejonge/tester",
    "require": {
        "doctrine/mongodb": "*"
    },
    "replace": {
        "ext-mongo": "*"
    },
    "minimun-stability": "dev",
    "prefer-stable": true
}