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CONTRIBUTING.md

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Contributing

Contributions should be made via pull requests. Pull requests will be reviewed by one or more maintainers and merged when acceptable.

This project is in an early state, making the impact of contributions much greater than at other stages. In this respect, it is important to consider any changes or additions for their future impact more so than their current impact.

Successful Changes

We ask that before contributing, please make the effort to coordinate with the maintainers of the project before submitting large or high impact PRs. This will prevent you from doing extra work that may or may not be merged.

PRs that are just submitted without any prior communication will likely be summarily closed.

While pull requests are the methodology for submitting changes to code, changes are much more likely to be accepted if they are accompanied by additional engineering work. While we don't define this explicitly, most of these goals are accomplished through communication of the design goals and subsequent solutions. Often times, it helps to first state the problem before presenting solutions.

Typically, the best methods of accomplishing this are to submit an issue, stating the problem. This issue can include a problem statement and a checklist with requirements. If solutions are proposed, alternatives should be listed and eliminated. Even if the criteria for elimination of a solution is frivolous, say so.

Larger changes typically work best with design documents, similar to those found in design/. These are focused on providing context to the design at the time the feature was conceived and can inform future documentation contributions.

Commit Messages

There are times for one line commit messages and this is not one of them. Commit messages should follow best practices, including explaining the context of the problem and how it was solved, including in caveats or follow up changes required. They should tell the story of the change and provide readers understanding of what led to it.

If you're lost about what this even means, please see How to Write a Git Commit Message for a start.

In practice, the best approach to maintaining a nice commit message is to leverage a git add -p and git commit --amend to formulate a solid changeset. This allows one to piece together a change, as information becomes available.

If you squash a series of commits, don't just submit that. Re-write the commit message, as if the series of commits was a single stroke of brilliance.

That said, there is no requirement to have a single commit for a PR, as long as each commit tells the story. For example, if there is a feature that requires a package, it might make sense to have the package in a separate commit then have a subsequent commit that uses it.

Remember, you're telling part of the story with the commit message. Don't make your chapter weird.

Sign your work

The sign-off is a simple line at the end of the explanation for the patch. Your signature certifies that you wrote the patch or otherwise have the right to pass it on as an open-source patch. The rules are pretty simple: if you can certify the below (from developercertificate.org):

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

Then you just add a line to every git commit message:

Signed-off-by: Joe Smith <joe.smith@email.com>

Use your real name (sorry, no pseudonyms or anonymous contributions.)

If you set your user.name and user.email git configs, you can sign your commit automatically with git commit -s.

Project maintainers

The runV maintainers will be the ones accepting or rejecting any pull request. They are listed in the OWNERS files, and there can be one OWNERS file per directory.

The OWNERS files split maintainership into 2 categories: reviewers and approvers. All approvers also belong to the reviewers list and there must be at least one approval from one member of each list for a pull request to be merged.

Since approvers are also reviewers, they technically can approve a pull request without getting another reviewer's approval. However, it is their due diligence to rely on reviewers and should use their approval power only in very specific cases.