name | about | title | labels | assignees |
---|---|---|---|---|
Major change proposal (MCP) |
Propose a major change. |
(My major change proposal) |
major-change, T-compiler |
Insert your proposal here, overwriting this text and the text under "Mentors or Reviewers", leaving the rest of the template untouched. Please include the complete proposal, rather than linking to a gist or other external document.
Your proposal doesn't have to be long. It should however be in sufficient detail that people familiar with the code can clearly envision what you are planning to do. Be sure to link to any relevant issues, PRs, or other sources.
When picking a title (that is, when replacing the "(My major change proposal)" text above), keep in mind that Zulip truncates text that extends beyond a certain length, replacing the truncated suffix with "…" in the topic name it creates. Therefore, consider keeping your title to <= 40 characters, if possible.
If you have a reviewer or mentor in mind for this work, mention them here. You can put your own name here if you are planning to mentor the work.
The main points of the Major Change Process are as follows:
- File an issue describing the proposal.
- A compiler team member or contributor who is knowledgeable in the area can second by writing
@rustbot second
.- Finding a "second" suffices for internal changes. If however, you are proposing a new public-facing feature, such as a
-C flag
, then full team check-off is required. - Compiler team members can initiate a check-off via
@rfcbot fcp merge
on either the MCP or the PR.
- Finding a "second" suffices for internal changes. If however, you are proposing a new public-facing feature, such as a
- Once an MCP is seconded, the Final Comment Period begins. If no objections are raised after 10 days, the MCP is considered approved.
You can read more about Major Change Proposals on forge.
This issue is not meant to be used for technical discussion. There is a Zulip stream for that. Use this issue to leave procedural comments, such as volunteering to review, indicating that you second the proposal (or third, etc), or raising a concern that you would like to be addressed.