# How to contribute Note: contributing implies licensing those contributions under the terms of [COPYING](../COPYING), which is an MIT-like license. ## Opening issues * Make sure you have a [GitHub account](https://github.com/signup/free) * [Submit an issue](https://github.com/NixOS/nixpkgs/issues) - assuming one does not already exist. * Clearly describe the issue including steps to reproduce when it is a bug. * Include information what version of nixpkgs and Nix are you using (nixos-version or git revision). ## Submitting changes * Format the commits in the following way: `(pkg-name | service-name): (from -> to | init at version | refactor | etc)` Examples: * nginx: init at 2.0.1 * firefox: 3.0 -> 3.1.1 * hydra service: add bazBaz option * nginx service: refactor config generation * Don't put dots at the end of package descriptions. See the nixpkgs manual for more details on how to [Submit changes to nixpkgs](http://hydra.nixos.org/job/nixpkgs/trunk/manual/latest/download-by-type/doc/manual#chap-submitting-changes).