Pants v2: Fast, consistent builds for Python and more

Welcome to the Pants v2 documentation hub!

Pants v2 is a fast, scalable build system for growing codebases. It's currently focused on Python, with support for other languages coming soon.

Here you'll find guides to help you get started with Pants v2, comprehensive documentation on how to configure, run and customize Pants v2, and information on how to get help from the Pants community.

Get Started

The IPython enhanced REPL (

Config section: [ipython]

Basic options


Advanced options

default: ipython==7.16.1

Requirement string for the tool.

--ipython-extra-requirements="['<str>', '<str>', ...]"
default: []

Any additional requirement strings to use with the tool. This is useful if the tool allows you to install plugins or if you need to constrain a dependency to a certain version.

default: IPython:start_ipython

The main module for the tool. Usually, you will not want to change this from the default.

default: True

Whether to tell IPython not to put the CWD on the import path.

Normally you want this to be True, so that imports come from the hermetic environment Pants creates.

However IPython<7.13.0 doesn't support this option, so if you're using an earlier version (e.g., because you have Python 2.7 code) then you will need to set this to False, and you may have issues with imports from your CWD shading the hermetic environment.

Deprecated options


Updated 2 months ago


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