spacy-legacy
Legacy registered functions for spaCy backwards compatibility
Decision gist · record as of 2026-08-14
Install only as an automatic dependency of its parent package—do not install directly. If using v3 with existing models or configs, this package is necessary for compatibility. However, its abandoned status since 2023-01-23 means no bug fixes or security patches will be provided. Plan to migrate legacy models to current versions when feasible.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Intended as an automatic dependency, not for direct installation or use
- Low install friction with no runtime dependencies.
- Package is abandoned as of 2023-01-23, with 1299 days since last release, meaning no further maintenance or updates.
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing commercial and private use with minimal restrictions.
last release 2023-01-23 (1299 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 20,659,206 downloads/mo, #1,030 on PyPI
Alternatives
Verify before relying
# Installed automatically as a dependency
# pip install parent-package
# No direct import needed; legacy functions are resolved automatically
# when loading models or configs that reference them- Whether this package is still actively required by current versions of its parent dependency
- Compatibility with Python versions beyond 3.9 (classifiers only list through 3.9)
What it is and what it does
spacy-legacy holds outdated registered functions, model architectures, and pipeline components that have been superseded in the main library. When a configuration file references a versioned function that no longer exists in the core library, the package provides a fallback via entry points prefixed with `spacy-legacy`. The package is installed automatically as a dependency and operates transparently—direct interaction is typically unnecessary.
The design separates backwards compatibility from core library development. Instead of maintaining old function versions in the main codebase, they are moved here and exposed through entry points. This allows users with older trained models or configuration files to continue working without modification, while the core library remains focused on current versions.
Use it for
- Loading models trained with older architectures no longer present in the current core library
- Running existing configuration files that reference deprecated function versions without modification
- Migrating to newer releases while maintaining compatibility with legacy trained models
- Supporting pipelines that must work with both legacy and current registered function versions
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Install only as an automatic dependency of its parent package—do not install directly.
If using v3 with existing models or configs, this package is necessary for compatibility. However, its abandoned status since 2023-01-23 means no bug fixes or security patches will be provided. Plan to migrate legacy models to current versions when feasible.
Install
spacy-legacy on PyPI
Before you install
Low install friction with no runtime dependencies. Package is abandoned as of 2023-01-23, with 1299 days since last release, meaning no further maintenance or updates.
Intended as an automatic dependency, not for direct installation or use
License in practice
MIT license is permissive, allowing commercial and private use with minimal restrictions.
Quickstart
# Installed automatically as a dependency
# pip install parent-package
# No direct import needed; legacy functions are resolved automatically
# when loading models or configs that reference themVerify before relying
- Whether this package is still actively required by current versions of its parent dependency
- Compatibility with Python versions beyond 3.9 (classifiers only list through 3.9)
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.6 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Abandoned 1,299 days since the last release |
| First released | |
| Downloads | 20,659,206 / month, #1,030 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: ConsoleIntended Audience :: DevelopersIntended Audience :: Science/ResearchLicense :: OSI Approved :: MIT LicenseOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIX :: LinuxProgramming Language :: Python :: 3Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Scientific/EngineeringTopic :: Scientific/Engineering :: Artificial Intelligence |
Evidence: spacy_legacy-3.0.12-py2.py3-none-any.whl
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See also spacy-curated-transformers · catalogue · date-spacy · spacy-transformers · spacy · spacy-loggers · packaging-legacy · spacy-language-detection · legacy-api-wrap · negspacy