Installing a wildcard version does not result in a specific version in the lock file

[ipmb]

Issue description

Adding a wildcard version to the Pipfile, e.g. django = "==2.2.*" does not pin to a specific version in the lock file. This appears to be a regression in 2020.5.28

Expected result

Something like:

        "django": {
            "hashes": [
                "sha256:69897097095f336d5aeef45b4103dceae51c00afa6d3ae198a2a18e519791b7a",
                "sha256:6ecd229e1815d4fc5240fc98f1cca78c41e7a8cd3e3f2eefadc4735031077916"
            ],
            "index": "pypi",
            "version": "==2.2.12"
        },

Actual result

        "django": {
            "hashes": [
                "sha256:69897097095f336d5aeef45b4103dceae51c00afa6d3ae198a2a18e519791b7a",
                "sha256:6ecd229e1815d4fc5240fc98f1cca78c41e7a8cd3e3f2eefadc4735031077916"
            ],
            "index": "pypi",
            "version": "==2.2.*"
        },

Steps to replicate

$ pipenv install 'django==2.2.*'
$ cat Pipfile.lock | jq .default.django.version
"==2.2.*"

---

$ pipenv --support

Pipenv version: '2020.5.28'

Pipenv location: '/home/django/.local/lib/python3.7/site-packages/pipenv'

Python location: '/usr/local/bin/python'

Python installations found:

• 3.7.7: /usr/local/bin/python3.7m
• 3.7.7: /usr/local/bin/python3.7
• 3.7.7: /usr/local/bin/python3
• 3.7.3: /usr/bin/python3.7m
• 3.7.3: /usr/bin/python3.7
• 3.7.3: /usr/bin/python3
• 2.7.16: /usr/bin/python2
• 2.7.16: /usr/bin/python2.7

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.7.7',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '4.19.76-linuxkit',
 'platform_system': 'Linux',
 'platform_version': '#1 SMP Tue May 26 11:42:35 UTC 2020',
 'python_full_version': '3.7.7',
 'python_version': '3.7',
 'sys_platform': 'linux'}

System environment variables:

• DATABASE_URL
• SITE_URI
• HOSTNAME
• PYTHON_VERSION
• AWS_DEFAULT_REGION
• PWD
• HOME
• LANG
• LS_COLORS
• GPG_KEY
• TERM
• SHLVL
• PYTHON_PIP_VERSION
• REDIS_CACHE_URL
• PYTHON_GET_PIP_SHA256
• PYTHON_GET_PIP_URL
• PATH
• PIP_NO_CACHE_DIR
• PIP_NO_BINARY
• STATIC_URL
• _
• OLDPWD
• PIP_DISABLE_PIP_VERSION_CHECK
• PYTHONDONTWRITEBYTECODE
• PIP_SHIMS_BASE_MODULE
• PIP_PYTHON_PATH
• PYTHONFINDER_IGNORE_UNSUPPORTED

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /opt/inklecate:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
• LANG: C.UTF-8
• PWD: /home/django

---

Contents of Pipfile ('/home/django/Pipfile'):

[[source]]
name = "pypi"
url = "https://pypi.org/simple"
verify_ssl = true

[dev-packages]

[packages]
django = "==2.2.*"

[requires]
python_version = "3.7"

Contents of Pipfile.lock ('/home/django/Pipfile.lock'):

{
    "_meta": {
        "hash": {
            "sha256": "7a778d69a8b843fab393edc4fa605d665505aab45a686b98b9ece084f7b70f3a"
        },
        "pipfile-spec": 6,
        "requires": {
            "python_version": "3.7"
        },
        "sources": [
            {
                "name": "pypi",
                "url": "https://pypi.org/simple",
                "verify_ssl": true
            }
        ]
    },
    "default": {
        "django": {
            "hashes": [
                "sha256:69897097095f336d5aeef45b4103dceae51c00afa6d3ae198a2a18e519791b7a",
                "sha256:6ecd229e1815d4fc5240fc98f1cca78c41e7a8cd3e3f2eefadc4735031077916"
            ],
            "index": "pypi",
            "version": "==2.2.*"
        },
        "pytz": {
            "hashes": [
                "sha256:a494d53b6d39c3c6e44c3bec237336e14305e4f29bbf800b599253057fbb79ed",
                "sha256:c35965d010ce31b23eeb663ed3cc8c906275d6be1a34393a1d73a41febf4a048"
            ],
            "version": "==2020.1"
        },
        "sqlparse": {
            "hashes": [
                "sha256:022fb9c87b524d1f7862b3037e541f68597a730a8843245c349fc93e1643dc4e",
                "sha256:e162203737712307dfe78860cc56c8da8a852ab2ee33750e33aeadf38d12c548"
            ],
            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
            "version": "==0.3.1"
        }
    },
    "develop": {}
}

[frostming]

It was reported in #4278 , the new release will be out in couple of days