---
id: packaging-legacy
version: "23.0.post0"
license: unclear
license_treatment: permissive
maintenance: dormant
---

# packaging-legacy — Core utilities for legacy Python packages

License: permissive · Maintenance: dormant · Downloads: 269.6K/mo

## What it is and what it does

packaging-legacy is a compatibility shim that restores APIs removed from the main packaging library. It provides `LegacyVersion` and a `parse` function for handling version strings in older formats that the current packaging library no longer supports. The package depends only on packaging itself and is marked production-stable across Python 3.7–3.11.

You would use this only if your codebase or dependencies still reference `LegacyVersion` or need to parse legacy version strings. It is not a replacement for packaging—it is a narrow bridge for code that was written against older packaging APIs and cannot be easily updated.

Use it for:

- Parsing version strings from legacy Python packages that predate modern standardization.
- Maintaining code that imports `LegacyVersion` directly without refactoring to current version handling.
- Supporting old package metadata or version formats in a tool or library that cannot migrate immediately.
- Bridging a dependency tree where some transitive packages still expect the old packaging API.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides access to deprecated Python packaging APIs—specifically `LegacyVersion` and a version parser—that were removed from the main packaging library.

Yes, but only if you have a specific need: code that imports `LegacyVersion` or relies on legacy version parsing. The package is stable and permissively licensed, but dormant—no active maintenance since mid-2024. Do not install it as a general dependency; install it only to unblock a concrete compatibility issue with legacy version formats.

## Install

pip install packaging-legacy
uv add packaging-legacy
poetry add packaging-legacy

## Installing packaging-legacy

Before you install: Low install friction with a single dependency on packaging. Maintenance is dormant—last release was 2023-11-28 and no commits since 2024-08-19—so expect no active support or updates.

License in practice: Licensed under permissive terms (Apache and BSD), so no restrictions on commercial or proprietary use.

Quickstart:

pip install packaging-legacy

from packaging_legacy.version import parse, LegacyVersion

v = parse('1.0-final')
print(isinstance(v, LegacyVersion))

Verify before relying:

- Whether legacy version formats this package handles are still encountered in modern Python ecosystems or are purely historical.
- Compatibility guarantees with future versions of the packaging library that this package depends on.
- Whether the non-standard version formats supported by LegacyVersion follow any documented specification.

## Package facts

- License: not declared (permissive)
- Python support: unspecified
- Install friction: low
- Maintenance: dormant
- Downloads: 269.6K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

legacy version parsing, LegacyVersion support, deprecated packaging APIs, old Python version formats, packaging compatibility shim, legacy version handling, compatibility-shim, deprecated-api, version-parsing

[View on SkillFed](https://skillfed.io/packages/packaging-legacy) · [View on PyPI](https://pypi.org/project/packaging-legacy/)