# NixOS/nixpkgs

Nix Packages collection & NixOS

Repository: https://github.com/NixOS/nixpkgs
Canonical: https://ross.abutalabs.com/products/nixpkgs
Language: Nix
License: MIT
License Family: permissive
Topics: nixpkgs, nix, nixos, linux, hacktoberfest
Last push: 2026-08-27T00:32:10+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 5203, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 25955, forks 19920 (observed 2026-08-28T04:11:38.757750+00:00)

## What it is
Nixpkgs is a collection of over 140,000 software packages installable with the Nix package manager, and it also implements NixOS, a purely-functional Linux distribution. It is one of the largest and most actively maintained package repositories in open source.

## Use cases
- install packages reproducibly with nix
- set up a declarative linux system with nixos
- create isolated development environments per project
- find a package not available in my distro's repos
- pin exact dependency versions for reproducible builds
- manage server configurations as code

## When to choose
- you want reproducible, declarative package management or system configuration
- you need a huge package collection with frequent updates
- you want per-project isolated dev environments
- you want to roll back system changes safely

## When to avoid
- you want a conventional imperative linux distribution
- your team is unwilling to learn the Nix language
- you need minimal disk usage or fast simple installs
- you depend on proprietary tooling that fights declarative setups

## Facets
- artifact type: infra-config
- maturity: stable
- function: package-manager, configuration-management, build-tool, developer-tools
- domain: operating-systems, developer-tools, self-hosted
- platform: cross-platform, cli
- tags: nix, nixos, declarative, reproducible-builds, package-collection, linux-distribution, devops, linux, macos

## Member repositories
- NixOS/nixpkgs (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:38.757750+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:55:57.151288+00:00, confidence not recorded.
  - readme: https://github.com/NixOS/nixpkgs (fetched 2026-08-28T04:11:38.757750+00:00, sha 9d2d6e2535f0)
- Data as of 2026-08-30T08:39:29.467469+00:00.