pipenv graph does not show all top-level packages

Issue description

My Pipfile contains the following:

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

[dev-packages]

[packages]
requests = "*"

[requires]
python_version = "2.7"

Pipenv graph then shows the output:

requests==2.21.0
  - certifi [required: >=2017.4.17, installed: 2018.11.29]
  - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
  - idna [required: >=2.5,<2.9, installed: 2.8]
  - urllib3 [required: >=1.21.1,<1.25, installed: 1.24.1]

I add another package under [dev-packages]:

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

[dev-packages]
sphinx-rtd-theme = "*"

[packages]
requests = "*"

[requires]
python_version = "2.7"

Since sphinx-rtd-theme has a dependency towards requests, the graph now only shows requests underneath sphinx-rtd-theme.

sphinx-rtd-theme==0.4.2
  - sphinx [required: Any, installed: 1.8.3]
    - alabaster [required: >=0.7,<0.8, installed: 0.7.12]
    - babel [required: >=1.3,!=2.0, installed: 2.6.0]
      - pytz [required: >=0a, installed: 2018.9]
    - docutils [required: >=0.11, installed: 0.14]
    - imagesize [required: Any, installed: 1.1.0]
    - Jinja2 [required: >=2.3, installed: 2.10]
      - MarkupSafe [required: >=0.23, installed: 1.1.0]
    - packaging [required: Any, installed: 18.0]
      - pyparsing [required: >=2.0.2, installed: 2.3.1]
      - six [required: Any, installed: 1.12.0]
    - Pygments [required: >=2.0, installed: 2.3.1]
    - requests [required: >=2.0.0, installed: 2.21.0]
      - certifi [required: >=2017.4.17, installed: 2018.11.29]
      - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
      - idna [required: >=2.5,<2.9, installed: 2.8]
      - urllib3 [required: >=1.21.1,<1.25, installed: 1.24.1]
    - setuptools [required: Any, installed: 40.6.3]
    - six [required: >=1.5, installed: 1.12.0]
    - snowballstemmer [required: >=1.1, installed: 1.2.1]
    - sphinxcontrib-websupport [required: Any, installed: 1.1.0]
    - typing [required: Any, installed: 3.6.6]

Expected result

I expected requests to also be shown at the top level, as it is a top-level dependency. The reason why I expect this is that other dependencies are shown multiple times. Look at for example six shown twice above.

I assume that it is reasonable to show main packages at the top and then also as again if it is a dependency of other packages.

Actual result

Steps to replicate

1. Start in a fresh directory and call pipenv install requests
2. Check pipenv graph
3. Run pipenv install --dev sphinx-rtd-theme
4. Check pipenv graph

[Pastromhaug]

Hiya, just wanna add that I was also very confuse about this. I totally assumed that any top-level packages described in my pipfile would be the top-level packages in the graph and had no idea what I was looking at.

[jxltom]

So actually you would like to let the pipenv support pipenv graph --default, pipenv graph --dev or something like that which can show the default packages or dev packages only.

Moving declared packages in Pipfile to the top level is just a workaround which makes your own parsing easier.

Is my understanding right?