nixpkgs/pkgs/development/node-packages/README.md

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Node.js packages
===============
To add a package from [NPM](https://www.npmjs.com/) to nixpkgs:
1. Install node2nix: `nix-env -f '<nixpkgs>' -iA nodePackages.node2nix`.
2. Modify `pkgs/development/node-packages/node-packages.json`, to add, update,
or remove package entries.
3. Run the script: `cd pkgs/development/node-packages && sh generate.sh`.
4. Build your new package to test your changes: `cd /path/to/nixpkgs &&
nix-build -A nodePackages.<new-or-updated-package>`. To build against a
specific node.js version (e.g. 5.x): `nix-build -A
nodePackages_5_x.<new-or-updated-package>`
5. Add, commit, and share your changes!