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olafkfreund
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node2nix

Convert npm packages into declarative Nix expressions for reproducible builds.

21|Updated Jan 5, 2024
Search Tags:#npm#nodejs#Nix#package-lock#node2nix#reproducible-builds
One-click install
npx skills add https://github.com/olafkfreund/nixos_config --skill node2nix
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: node2nix
Source: https://github.com/olafkfreund/nixos_config/tree/main/.gemini/skills/node2nix
Command: npx skills add https://github.com/olafkfreund/nixos_config --skill node2nix

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Converts npm-based Node.js projects into declarative Nix expressions, enabling reproducible builds and consistent deployments.

Core Features & Use Cases

  • Generate node-packages.nix, node-env.nix, and default.nix from a Node.js project.
  • Declarative dependency management with Nix to replace ad-hoc npm installs.
  • Use Case: Ideal for CI pipelines and multi-host environments to guarantee identical environments.

Quick Start

Use the tool in a Node.js project directory to generate Nix expressions. For example: node2nix -l package-lock.json Then build with nix-build -A package or install with nix-env -f default.nix -iA package.

Frequently Asked Questions about node2nix

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert npm packages to reproducible Nix expressions?▼

Generate reproducible Nix expressions from npm packages by running node2nix in your Node.js project directory to produce node-packages.nix, node-env.nix, and default.nix configuration files.

What is the best way to make Node.js builds reproducible across CI pipelines?▼

The best way to make Node.js builds reproducible across CI pipelines is converting npm dependencies into declarative Nix expressions, guaranteeing identical environments on multi-host setups without ad-hoc npm installs.

Can I use package-lock.json to generate Nix expressions for a Node.js project?▼

Yes, you can use package-lock.json to generate Nix expressions by executing node2nix -l package-lock.json, which translates your locked npm dependencies into declarative Nix configuration files.

Do I need Nix and Nixpkgs installed to build Node.js projects with node2nix?▼

Yes, you need Nix and Nixpkgs installed to build Node.js projects, as node2nix requires them to generate the expressions and build packages using nix-build or install them with nix-env.

How does declarative Nix dependency management differ from standard npm installs?▼

Declarative Nix dependency management replaces ad-hoc npm installs by generating static Nix expressions, ensuring that builds are fully reproducible and environments remain consistent across different hosts and CI pipelines.

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