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Add a link to the top to the current RFCs
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SuperCollider RFCs

RFC (Request for Comment) is a way for SuperCollider contributors to propose, design, and discuss new features and changes in project direction in a focused environment.

RFCs start as pull requests here:

Once accepted, they can be found in this directory:

What does an RFC do?

The RFC process is intended to bring focus and structure to discussions of important changes and new features in the SuperCollider project. It provides a space for sharing and collaborating on ideas and design documents, keeping community discussion organized and focused on the goal of reaching a decision.

Visibility and inclusivity are important values for RFCs. They are advertised to both developer and user communication channels so everyone can participate.

An RFC is only a design document, and not a single line of code needs to be written for the discussion to be approved (although prototyping on a branch is often a good idea). An approved RFC has no timeline for when it needs to be implemented.

When should I file an RFC?

If you have an idea for something and are unsure if it needs an RFC, the best way to find out is to just ask! An RFC is much more likely to succeed if it begins life as a discussion, and collaborators are encouraged to start off by talking to other project members before submitting an RFC. This can also help gauge early support for the feature and work out any obvious issues or design decisions.

RFCs are used for proposing "substantial" changes. The meaning of "substantial" is subjective, but a good start would be anything that benefits from design discussion. Put a different way, it's recommended to file an RFC if the design or implementation isn't immediately clear, or if there are drawbacks or potential consequences that require discussion first. These might be worth consideration for an RFC:

  • New features
  • Breaking changes
  • Organizational changes, including changes to the RFC process itself

The following do not need to go through an RFC:

  • Bug fixes
  • Releases of new SuperCollider versions
  • Anything unlikely to be controversial or in need of discussion

Proposing an RFC

Step 0: Decide if you should file an RFC

As an RFC author, it's best if you only have one RFC of yours open at any moment. This restriction is a guideline, but you are advised to be respectful of other contributors who would also like their RFCs to receive attention, and to be cognizant of the potential cost of spreading the community's attention thinly across a multitude of proposals.

Step 1: Fork this repository

Fork this repository if you haven't already.

Step 2: Write RFC

Copy rfcs/ to rfcs/0000-<my-proposal-title>.md and begin working on the RFC.

Please put a lot of thought into your writing. A great RFC explains and justifies its motivations and carefully considers all drawbacks and alternatives. Show the reader what the problems are and how the proposal concretely and practically addresses them.

Step 3: File pull request

Make a pull request back to this repository. The open pull request is the RFC. Discussion of the RFC is held in the comments of the pull request.

After the pull request is filed, the pull request number (say #35) is your RFC number. Then do the following:

  1. In the branch, rename the file from rfcs/0000-<my-proposal-title>.md to rfcs/0035-<my-proposal-title>.md. This makes all the proposals show up in ascending chronological order when someone visits the rfcs directory.
  2. In the file itself, there's a bullet point labeled "RFC PR." Update this so that it links to the pull request. This ensures that the discussion is immediately accessible from the RFC text.

These are minor housekeeping steps that keep the RFC a nice, tidy, and easily navigable archive. If you make a mistake in this process, it's no huge issue -- someone else can fix it for you.

Step 4: Announce

After the RFC is ready to go, please announce it to:

  • sc-dev
  • sc-users
  • Facebook (optional)
  • Slack #dev channel (optional)

Here is a template:

Subject: RFC: Deprecate BadFeature

A new RFC (request for comment) has been opened here:

Please visit the above link for discussion.

Discussing an RFC

Discussion about the RFC should happen on the RFC pull request on GitHub. If discussions happen outside the GitHub thread, it's best to link and summarize them in the RFC thread to make the conversations easier to track.

The RFC will likely undergo numerous revisions in the discussion process.

While discussing an RFC, it is everyone's responsibility to work towards reaching a conclusion. When you make a post to the RFC thread, focus on the contents and implications of the RFC only.

Here are some guidelines:

  • Think about these important questions:
    • Do you agree with the proposal in its current form?
    • Are concerns and questions adequately addressed?
    • Do you have suggestions for how the RFC can be revised or expanded, especially in the Unresolved Questions section?
  • Don't be shy: Even if you aren't an active SC contributor, or if you don't feel "qualified" to discuss the topic, please feel free to directly state your opinion on an RFC, especially if it affects you in some way.
  • Stay on topic: Starting or continuing tangential or off-topic discussions is disrespectful to the RFC author and is strongly discouraged. Such discussions often dilute the thread and make it hard to identify what the community's decision should be. The purpose of the RFC thread is to reach a conclusion, and any commentary that does not contribute to that is damaging to the RFC process.
  • Civility and respect: Like all other discussions that happen in the SuperCollider community, RFC discussions are governed by our Code of Conduct. Creating an RFC is a laborious project. Commenting on an RFC should be done with respect and empathy for the hard work that the author has put into it.
  • Avoid scope creep: You should make suggestions on how the RFC can be revised or expanded, but be careful not to expand it too much and develop it into something far more ambitious than was originally intended.

Finalizing an RFC

When the RFC seems ready to conclude, anyone may make a motion for a Final Comment Period. The Final Comment Period lasts 14 days, and has a disposition to either pass or reject.

To make a motion for Final Comment Period, simply leave a comment on the pull request thread. The Final Comment Period should also be announced on the same forums as above: sc-users, sc-dev, and; and optionally Facebook and Slack's #dev channel. Here is a template:

Subject: RFC Final Comment Period: Deprecate BadFeature

An RFC has now entered Final Comment Period. In 14 days, discussion will end and the proposal will either be accepted, rejected or withdrawn:

Please visit the above link for discussion.

When should the Final Comment Period start? There doesn't need to be a consensus with everyone involved (which is usually impossible), but the RFC should be in a state where the author feels that the writing effort is complete, the arguments have been clearly articlated, discussions are resolved and drawbacks acknowledged in the RFC's text, and there isn't a strong consensus against the proposal.

Sometimes, RFCs can reach points of disagreement where no clear consensus is in sight. Unfortunately, there is no way that this RFC process can solve such issues, and these have to be handled on a case-by-case basis.

If no important developments occur during this time frame, someone with write access merges (for passed RFCs) or closes (for rejected RFCs) the RFC PR.

At any point, the RFC author can also choose to withdraw an RFC, with no 14-day grace period necessary.

Implementation of an RFC can start before, during, or after it has been approved. In fact, if you propose an RFC, you don't need to be the person to implement it, but usually the implementer is the same person as the RFC author.

About the RFC process

This isn't a legal document, and you shouldn't spend a lot of time analyzing its wording. This process is intentionally quite informal and subjective. Situations will come up that may not have been anticipated by this article, and they should be handled on a case-by-case basis.

If something is ambiguous in this article, that means it is left up to discussion. If something is a persistent cause of confusion, then it may be wise to amend the RFC process itself for clarification.

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