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CONTRIBUTING.md

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Contributing to MELPA

Contributing New Recipes

New recipe submissions should adhere to the following guidelines,

  • One pull request per recipe. You can create multiple branches and create a pull request for each branch.

  • Upstream source must be stored in an authoritative SCM repository. EmacsWiki recipes are no longer accepted.

  • Packages should be built from the official package repository. Forks of the official repository will not be accepted except in extreme circumstances.

  • The package name should match the name of the feature provided. See the package function for more information.

  • The package should follow the conventions of Emacs Lisp

  • Packages should adhere to the package.el format as specified by (info "(elisp) Packaging"). More information on this format is provided by the marmalade package manual.

  • Recipes should try to minimize the size of the resulting package by specifying only files relevant to the package. See the Recipe Format section of the README for more information on specifying package files.

  • To have a stable version generated for your package simply tag the repository using a naming compatible with version-to-list. The repo state of this tag will be used to generate the stable package.

Expediting Recipe Reviews

Because we care about the quality of packages that are part of MELPA we review all submissions. The following steps can help us with this process and expedite the recipe review process,

  • Use package-lint and flycheck-package to help you identify common errors in your package metadata.

  • Use checkdoc to make sure that your package follows the conventions for documentation strings. See the official Emacs manual for details.

  • Include the following information in the pull request:

    • A brief summary of what the package does.

    • A direct link to the package repository.

    • Your association with the package (e.g., are you the maintainer? have you contributed? do you just like the package a lot?).

    • Relevant communications with the upstream package maintainer (e.g., package.el compatibility changes that you have submitted).

  • Test that the package builds properly via make recipes/<recipe>, or pressing C-c C-c in the recipe buffer.

  • Test that the package installs properly via package-install-file, or entering "yes" when prompted after pressing C-c C-c in the recipe buffer.

  • If you are not the original author or maintainer of the package you are submitting, please consider notifying the author prior to submitting and make reasonable effort to include them in the pull request process.

Testing

Let <NAME> denote the name of the recipe to submit.

  1. Fork the MELPA repository.

  2. Add your new file under the directory specified by package-build-recipes-dir (default: recipes/ directory where package-build was loaded). If you prefer, the interactive command package-build-create-recipe in package-build/package-build.el will guide you through this process.

  3. Confirm your package builds properly by running

     make recipes/<NAME>

(Be sure that the emacs on your path is at least version 23, or set $EMACS_COMMAND to the location of a suitable binary.)

Alternatively, open the recipe in Emacs and press C-c C-c in the recipe buffer: this will also prompt you to install the freshly-built package.

If the repository contains tags for releases, confirm that the correct version is detected by running STABLE=t make recipes/<NAME>. The version detection can be adjusted by specifying :version-regexp in the recipe (see "Recipe Format" in the README).

  1. Install the file you built by running package-install-file from within Emacs and specifying the newly built package in the directory specified by package-build-archive-dir (default: packages/ directory where package-build was loaded).

You can optionally run a sandboxed Emacs in which locally-built packages will be available for installation along with those already in MELPA:

EMACS_COMMAND=/path/to/emacs make sandbox

then M-x package-list-packages, install and test as appropriate. This is a useful way to discover missing dependencies!

Submitting

After verifying the entry works properly please open a pull request on GitHub. Consider the hub command-line utility by defunkt which helps simplify this process.