--TEST--
We are not allowed to group packages only by their dependency definition. It's also relevant what other
packages require (package/b@1.0.1 must not be dropped although it has the very same definition as 2.0.0 and both are
allowed by the request). However, package/b@1.0.0 can be removed.

--REQUEST--
{
    "require": {
        "package/a": "^1.0"
    }
}


--POOL-BEFORE--
[
        {
            "name": "package/a",
            "version": "1.0.0",
            "require": {
                "package/b": "^1.0 || ^2.0"
            }
        },
        {
            "name": "package/b",
            "version": "1.0.0",
            "require": {
                "package/c": "^1.0"
            }
        },
        {
            "name": "package/b",
            "version": "1.0.1",
            "require": {
                "package/c": "^1.0"
            }
        },
        {
            "name": "package/b",
            "version": "2.0.0",
            "require": {
                "package/c": "^1.0"
            }
        },
        {
            "name": "package/c",
            "version": "1.0.0",
            "require": {
                "package/d": "^1.0"
            }
        },
        {
            "name": "package/d",
            "version": "1.0.0",
            "require": {
                "package/b": ">=1.0 <1.1"
            }
        }
]


--POOL-AFTER--
[
        {
             "name": "package/a",
             "version": "1.0.0",
             "require": {
                 "package/b": "^1.0 || ^2.0"
             }
         },
         {
             "name": "package/b",
             "version": "1.0.1",
             "require": {
                 "package/c": "^1.0"
             }
         },
         {
             "name": "package/b",
             "version": "2.0.0",
             "require": {
                 "package/c": "^1.0"
             }
         },
         {
             "name": "package/c",
             "version": "1.0.0",
             "require": {
                 "package/d": "^1.0"
             }
         },
         {
             "name": "package/d",
             "version": "1.0.0",
             "require": {
                 "package/b": ">=1.0 <1.1"
             }
         }
]