nab-python
Index-backed provider, lockfile emitter, and downloader for nab
Decision gist · record as of 2026-08-14
Yes, if you need to embed package resolution in a tool and are willing to pin exact versions due to the API's experimental status. The active maintenance, low install friction, MIT license, and zero known vulnerabilities support adoption. Not suitable if you need a stable, long-term API guarantee.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; API is under rapid experimentation, so exact version pinning is recommended.
- Active maintenance with a release 3 days old.
- Low install friction from a pure-wheel distribution.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions, making it suitable for embedding in other tools.
last release 2026-08-11 (3 days) · last repo commit 2026-08-14 · 24 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 425,217 downloads/mo, #6,760 on PyPI
Alternatives
Verify before relying
pip install nab-python
from nab_python import <provider_or_resolver_class>
# Embed resolver in your tool without CLI- Specific API surface and stability guarantees beyond 'under rapid experimentation'
- Whether the eight runtime dependencies are all required or some are optional
- Performance characteristics for large dependency graphs or index queries
What it is and what it does
nab-python is a Python package index provider that powers the nab resolver, handling all the mechanics of interaction with standards-based Python package indexes. It is designed for developers who want to embed package resolution and lockfile generation into their own tools without using the CLI. The package implements build and distribution policies that let you control how the resolver and installer behave.
The package is actively maintained and currently in beta. It depends on build, installer, nab-index, nab-resolver, pyproject-hooks, tomli-w, tomli, and typing-extensions. The maintainers explicitly warn that the API is under rapid experimentation, so you should pin to exact versions rather than ranges.
Use it for
- Embed Python package resolution in a custom build or deployment tool
- Generate lockfiles programmatically for reproducible environments
- Build a package manager or dependency analysis tool on top of nab
- Integrate index-backed resolution into a CI/CD or infrastructure tool
- Control resolver behavior through custom build and distribution policies
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need to embed package resolution in a tool and are willing to pin exact versions due to the API's experimental status.
The active maintenance, low install friction, MIT license, and zero known vulnerabilities support adoption. Not suitable if you need a stable, long-term API guarantee.
Install
nab-python on PyPI
Before you install
Active maintenance with a release 3 days old. Low install friction from a pure-wheel distribution. Eight runtime dependencies including build, installer, and resolver components suggest a moderately complex dependency tree, though all are standard tooling packages.
Requires Python 3.10 or later; API is under rapid experimentation, so exact version pinning is recommended.
License in practice
MIT license permits commercial and private use with minimal restrictions, making it suitable for embedding in other tools.
Quickstart
pip install nab-python
from nab_python import <provider_or_resolver_class>
# Embed resolver in your tool without CLIVerify before relying
- Specific API surface and stability guarantees beyond 'under rapid experimentation'
- Whether the eight runtime dependencies are all required or some are optional
- Performance characteristics for large dependency graphs or index queries
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 8 packagesbuildinstallernab-indexnab-resolverpyproject-hookstomli-wtomlityping-extensions |
| Maintenance | Actively maintained 3 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 425,217 / month, #6,760 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Typing :: Typed |
Evidence: nab_python-0.0.13-py3-none-any.whl
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See also nab-index · nab-resolver · resolvelib · abxpkg · requirementslib · pdm · aiohttp-asyncmdnsresolver · aiodns · resolve-robotics-uri-py · pycares