Use case of --ignore-pipfile

[ricolxwz]

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---

Please run $ pipenv --support, and paste the results here. Don't put backticks (`) around it! The output already contains Markdown formatting.

$ pipenv --support

Pipenv version: '2024.0.1'

Pipenv location: '/home/wenzexu/.pyenv/versions/3.12.4/lib/python3.12/site-packages/pipenv'

Python location: '/home/wenzexu/.pyenv/versions/3.12.4/bin/python3.12'

OS Name: 'posix'

User pip version: '24.0'

user Python installations found:

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.12.4',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '6.9.7-200.fc40.x86_64',
 'platform_system': 'Linux',
 'platform_version': '#1 SMP PREEMPT_DYNAMIC Thu Jun 27 18:11:45 UTC 2024',
 'python_full_version': '3.12.4',
 'python_version': '3.12',
 'sys_platform': 'linux'}

System environment variables:

• SHELL
• SESSION_MANAGER
• PYENV_HOOK_PATH
• COLORTERM
• PYENV_SHELL
• NVM_INC
• HISTCONTROL
• XDG_MENU_PREFIX
• TERM_PROGRAM_VERSION
• CONDA_EXE
• _CE_M
• HOSTNAME
• HISTSIZE
• DOTNET_ROOT
• SSH_AUTH_SOCK
• WARP_USE_SSH_WRAPPER
• MEMORY_PRESSURE_WRITE
• XMODIFIERS
• DESKTOP_SESSION
• EDITOR
• PYENV_VERSION
• PWD
• XDG_SESSION_DESKTOP
• LOGNAME
• XDG_SESSION_TYPE
• SYSTEMD_EXEC_PID
• XAUTHORITY
• GJS_DEBUG_TOPICS
• GDM_LANG
• HOME
• USERNAME
• LANG
• LS_COLORS
• XDG_CURRENT_DESKTOP
• MEMORY_PRESSURE_WATCH
• WAYLAND_DISPLAY
• WARP_HONOR_PS1
• WARP_COMBINED_PROMPT_COMMAND_GRID
• SSH_SOCKET_DIR
• INVOCATION_ID
• MANAGERPID
• DOTNET_BUNDLE_EXTRACT_BASE_DIR
• PYENV_DIR
• GJS_DEBUG_OUTPUT
• NVM_DIR
• GNOME_SETUP_DISPLAY
• XDG_SESSION_CLASS
• TERM
• _CE_CONDA
• LESSOPEN
• USER
• CONDA_SHLVL
• DISPLAY
• SHLVL
• NVM_CD_FLAGS
• QT_IM_MODULE
• CONDA_PYTHON_EXE
• XDG_RUNTIME_DIR
• PYENV_ROOT
• DEBUGINFOD_URLS
• WARP_IS_LOCAL_SHELL_SESSION
• JOURNAL_STREAM
• XDG_DATA_DIRS
• PATH
• GDMSESSION
• DBUS_SESSION_BUS_ADDRESS
• NVM_BIN
• MAIL
• GIO_LAUNCHED_DESKTOP_FILE_PID
• GIO_LAUNCHED_DESKTOP_FILE
• OLDPWD
• TERM_PROGRAM
• PIP_DISABLE_PIP_VERSION_CHECK
• PYTHONDONTWRITEBYTECODE
• PYTHONFINDER_IGNORE_UNSUPPORTED

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /home/wenzexu/.pyenv/versions/3.6.15/bin:/home/wenzexu/.pyenv/versions/3.9.19/bin:/home/wenzexu/.pyenv/versions/3.12.4/bin:/home/wenzexu/.pyenv/versions/3.8.19/bin:/home/wenzexu/.pyenv/versions/3.7.17/bin:/home/wenzexu/.pyenv/versions/3.12.4/bin:/home/wenzexu/.pyenv/libexec:/home/wenzexu/.pyenv/plugins/python-build/bin:/home/wenzexu/.pyenv/plugins/pyenv-virtualenv/bin:/home/wenzexu/.pyenv/plugins/pyenv-update/bin:/home/wenzexu/.pyenv/plugins/pyenv-doctor/bin:/home/wenzexu/.pyenv/shims:/home/wenzexu/.pyenv/bin:/home/wenzexu/.nvm/versions/node/v20.15.0/bin:/home/wenzexu/miniconda3/condabin:/home/wenzexu/.local/bin:/home/wenzexu/bin:/home/wenzexu/.pyenv/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/wenzexu/.dotnet/tools:/home/wenzexu/.cargo/bin:/usr/local/bin:/home/wenzexu/.local/share/JetBrains/Toolbox/scripts:/home/wenzexu/.cargo/bin:/usr/local/bin:/home/wenzexu/.local/share/JetBrains/Toolbox/scripts
• SHELL: /bin/bash
• EDITOR: /usr/bin/nano
• LANG: zh_CN.UTF-8
• PWD: /home/wenzexu

---

My question is what is the use case of pipenv install --ignore-pipfile, to me, there is no difference between pipenv install and pipenv install --ignore-pipfile.

For example:

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

[packages]
"requests" = "==2.11.0"

[dev-packages]

[requires]
python_version = "3.12"

# Pipfile.lock
{
    "_meta": {
        "hash": {
            "sha256": "7f1be087f2e6adbe8ec64f71bfaaed8b6bb1595f3769488039b14c9d2e555dca"
        },
        "pipfile-spec": 6,
        "requires": {
            "python_version": "3.12"
        },
        "sources": [
            {
                "name": "pypi",
                "url": "https://pypi.org/simple",
                "verify_ssl": true
            }
        ]
    },
    "default": {
        "requests": {
            "hashes": [
                "sha256:09bc1b5f3a56cd8c48d433213a8cba51a67d12936568f73b5f1793fcb0c0979e",
                "sha256:63f1815788157130cee16a933b2ee184038e975f0017306d723ac326b5525b54"
            ],
            "index": "pypi",
            "markers": "python_version >= '3.8'",
            "version": "==2.10.0"
        }
    },
    "develop": {}
}

If I run pipenv install:

$ pipenv install
Pipfile.lock (555dca) out of date: run `pipfile lock` to update to (14165b)...
Running $ pipenv lock then $ pipenv sync.
Locking [packages] dependencies...
Building requirements...
Resolving dependencies...
✔ Success!
Locking [dev-packages] dependencies...
Updated Pipfile.lock (793cf11c853344d4cc8f42ede41e771eb6afaccce2510f7daf1efb578d14165b)!
Installing dependencies from Pipfile.lock (14165b)...
All dependencies are now up-to-date!
Installing dependencies from Pipfile.lock (14165b)...

If I run pipenv install --ignore-pipfile:

$ pipenv install --ignore-pipfile
Pipfile.lock (555dca) out of date: run `pipfile lock` to update to (14165b)...
Running $ pipenv lock then $ pipenv sync.
Locking [packages] dependencies...
Building requirements...
Resolving dependencies...
✔ Success!
Locking [dev-packages] dependencies...
Updated Pipfile.lock (793cf11c853344d4cc8f42ede41e771eb6afaccce2510f7daf1efb578d14165b)!
Installing dependencies from Pipfile.lock (14165b)...
All dependencies are now up-to-date!
Installing dependencies from Pipfile.lock (14165b)...

No difference at all.

If I want to install from Pipfile.lock and really ignore the Pipfile I can run pipenv sync:

$ pipenv sync
Installing dependencies from Pipfile.lock (555dca)...
All dependencies are now up-to-date!