hydra-core

A framework for elegantly configuring complex applications

hydra-core Permissive license MIT Active ★ 10,594 v1.3.5 released 2026-08-05

Install

hydra-core on PyPI

pip

pip install hydra-core

uv

uv add hydra-core

poetry

poetry add hydra-core

Package facts

License	MIT (permissive)
Python support	not specified
Install friction	low — pure-Python wheel
Runtime dependencies	4 — omegaconf, antlr4-python3-runtime, importlib-resources, packaging
Maintenance	actively maintained — 8 days since the last release
Last repo commit	2026-08-13
First released	2019-09-19
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: hydra_core-1.3.5-py3-none-any.whl

Keywords: command-line, configuration, yaml, tab-completion

Development Status :: 4 - BetaLicense :: OSI Approved :: MIT LicenseOperating System :: MacOSOperating System :: Microsoft :: WindowsOperating System :: POSIX :: LinuxProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9

About hydra-core

from the package's own PyPI description — quoted content, verbatim

<p align="center"> <a href="https://pypi.org/project/hydra-core/"> <img src="https://img.shields.io/pypi/v/hydra-core" alt="PyPI" /> </a> <a href="https://circleci.com/gh/facebookresearch/hydra"> <img src="https://img.shields.io/circleci/build/github/facebookresearch/hydra?token=af199cd2deca9e70e53776f9ded96284b10687e9" alt="CircleCI" /> </a> <a href="#"> <img src="https://img.shields.io/pypi/l/hydra-core" alt="PyPI - License" /> </a> <a href="#"> <img src="https://img.shields.io/pypi/pyversions/hydra-core" alt="PyPI - Python Version" /> </a> <a href="https://pepy.tech/project/hydra-core?versions=0.11.&versions=1.0.&versions=1.1.*"> <img src="https://pepy.tech/badge/hydra-core/month" alt="Downloads" /> </a> <a href="https://github.com/psf/black"> <img src="https://img.shields.io/badge/code%20style-black-000000.svg" alt="Code style: black" /> </a> <a href="https://lgtm.com/projects/g/facebookresearch/hydra/alerts/"> <img...

Read as markdown · JSON record · Source repository · Homepage

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Hydra is a framework for elegantly configuring complex applications through YAML-based configuration management and command-line composition.

Low friction install with four stable runtime dependencies (omegaconf, antlr4-python3-runtime, importlib-resources, packaging). Active maintenance with release 8 days ago and strong repository signals.

MIT license permits commercial and private use with minimal restrictions, requiring only preservation of copyright and license notices in distributions.

Usage

pip install hydra-core==1.3.5

from hydra import compose, initialize
from omegaconf import DictConfig

@hydra.main(version_base=None, config_path="conf", config_name="config")
def my_app(cfg: DictConfig) -> None:
    print(cfg)

Verdict: Hydra is an actively maintained framework with no known vulnerabilities, permissive MIT licensing, and low installation friction. It is well-suited for projects requiring sophisticated configuration management.

Needs verification

Specific Python version requirements beyond the classifiers (3.7, 3.8, 3.9, 3.10, 3.11) listed in the fact sheet
Whether the package requires specific system libraries or build tools beyond its listed Python dependencies
Performance characteristics and memory overhead when managing very large configuration hierarchies

configuration management frameworkyaml config buildercommand-line argument parserapplication config frameworkparameter composition toolstructured configurationhydra config framework