seed/0001-the-seed-process.rst - pigweed/pigweed - Git at Google

 .. _seed-0001:

 ======================
 0001: The SEED Process
 ======================

 .. card::
    :fas:`seedling` SEED-0001: :ref:`The SEED Process<seed-0001>`

    :octicon:`comment-discussion` Status:
    :bdg-primary:`Open for Comments`
    :octicon:`chevron-right`
    :bdg-secondary-line:`Last Call`
    :octicon:`chevron-right`
    :bdg-secondary-line:`Accepted`
    :octicon:`kebab-horizontal`
    :bdg-secondary-line:`Rejected`

    :octicon:`calendar` Proposal Date: 2022-10-31

    :octicon:`code-review` CL: `pwrev/116577 <https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/116577>`_

 -------
 Summary
 -------
 SEEDs are the process through which substantial changes to Pigweed are proposed,
 reviewed, and decided by community stakeholders to collaboratively drive the
 project in a favorable direction.

 This document outlines the SEED process at a high level. Details about how SEEDs
 should be written and structured are described in :ref:`seed-0002`.

 ----------
 Motivation
 ----------
 As Pigweed and its community grow, it becomes important to ensure that the
 Pigweed team, Pigweed users, and other community stakeholders align on the
 future of the project. To date, development of Pigweed has primarily been
 driven by the core team, and community feedback has been mostly informal and
 undocumented.

 SEEDs are a formalized process for authoring, reviewing, and ratifying proposed
 changes to Pigweed.

 The SEED process has several goals.

 - Increase the visibility of proposed changes to Pigweed early on and allow
   interested parties to engage in their design.

 - Maintain a public record of design decisions rendered during Pigweed's
   development and the rationales behind them.

 - Ensure consistent API design across Pigweed modules through a formal team-wide
   review process.

 Active SEEDs are discussed by the community through Gerrit code review comments
 as well as a SEEDs chatroom in Pigweed's Discord server. Decisions are
 ultimately rendered by a review committee of Pigweed team members.

 ------------------------
 When is a SEED required?
 ------------------------
 SEEDs should be written by any developer wishing to make a "substantial" change
 to Pigweed. Whether or not a change is considered "substantial" varies depending
 on what parts of Pigweed it touches and may change over time as the project
 evolves. Some general guidelines are established below.

 Examples of changes considered "substantial" include, but are not limited to:

 - Adding a new top-level module.

 - Modifying a widely-used public API.

 - A breaking update to typical Pigweed user workflows (bootstrap, build setup,
   ``pw`` commands, etc.).

 - Changing any data interchange or storage protocol or format (e.g. transport
   protocols, flash layout), unless the change is small and backwards compatible
   (e.g. adding a field to an exchanged Protobuf message).

 - Changes to Pigweed's code policy, style guides, or other project-level
   guidelines.

 - Whenever a Pigweed team member asks you to write a SEED.

 Conversely, the following changes would likely not require a SEED:

 - Fixing typos.

 - Refactoring internal module code without public API changes.

 - Adding minor parallel operations to existing APIs (e.g.
   ``Read(ConstByteSpan)`` vs ``Read(const byte*, size_t)``).

 If you're unsure whether a change you wish to make requires a SEED, it's worth
 asking the Pigweed team in our Discord server prior to writing any code.

 -------
 Process
 -------
 Suppose you'd like to propose a new Pigweed RPC Over Smoke Signals protocol.

 #. If you haven't already, clone the Pigweed repository and set it up locally,
    following the :ref:`docs-getting-started` guide.

 #. Copy the `SEED template <0002-template>`_ to create the RST file for your
    SEED. As you don't yet have a SEED number, use XXXX as a placeholder,
    followed by the lowercase title of the proposal, with words separated by
    hyphens.

    .. code-block:: sh

       cp seed/0002-template.rst seed/XXXX-pw_rpc-over-smoke-signals.rst

 #. Push up the template to Gerrit, marking it as a Work-In-Progress change.
    From here, you may fill the template out with the content of your proposal
    at your convenience.

 #. At any point, you may claim a SEED number by opening the
    `SEED index <0000-index>`_ and taking the next available number by inserting
    a row into the ``toctree`` table. Link the entry to the WIP change for your
    SEED.

    .. code-block:: rst

       .. toctree::

          0001-the-seed-process
          ...
          5308-some-other-seed
          5309: pw_rpc Over Smoke Signals<https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/116577>

 #. Commit your change to the index (and nothing else) with the commit message
    ``SEED-xxxx: Claim SEED number``.

    .. code-block:: sh

       git add seed/0000-index.rst
       git commit -m "SEED-5309: Claim SEED number"

 #. Push up a changelist (CL) to Gerrit following the :ref:`docs-contributing`
    guide and add GWSQ as a reviewer. Set ``Pigweed-Auto-Submit`` to +1.

    .. image:: 0001-the-seed-process/seed-index-gerrit.png

 #. Once your CL has been reviewed and submitted, the SEED number belongs to you.
    Update your document's template and filename with this number.

 #. When you feel you have enough substantive content in your proposal to be
    reviewed, push it up to Gerrit and switch the change from WIP to Active.
    This will begin the open comments period.

 #. Engage with reviewers to iterate on your proposal through its comment period.

 #. When a tentative decision has been reached, a Pigweed team member will
    comment on your proposal with a summary of the discussion and reasoning,
    moving it into its Last Call phase (as described in the :ref:`Lifecycle
    <seed-0001-lifecycle>` section).

 #. Following the conclusion of the Last Call period, a Pigweed team member will
    sign off on the CL with a +2 vote, allowing it to be submitted. Update the
    reference in the SEED index with the link to your document and submit the CL.

    .. code-block:: rst

       .. toctree::

          0001-the-seed-process
          ...
          5308-some-other-seed
          5309-pw_rpc-over-smoke-signals

 --------------
 SEED documents
 --------------
 SEEDs are written as ReST documents integrated with the rest of Pigweed's
 documentation. They live directly within the core Pigweed repository, under a
 top-level ``seed/`` subdirectory.

 The structure of SEED documents themselves, their format, required sections, and
 other considerations are outlined in :ref:`seed-0002`.

 The first 100 SEEDs (0000-0100) are *Meta-SEEDs*. These are reserved for
 internal Pigweed usage and generally detail SEED-related processes. Unlike
 regular SEEDs, Meta-SEEDs are living documents which may be revised over time.

 .. _seed-0001-lifecycle:

 -----------------------
 The lifecycle of a SEED
 -----------------------
 A SEED proposal undergoes several phases between first being published and a
 final decision.

 :bdg-primary-line:`Draft` **The SEED is a work-in-progress and not yet ready
 for comments.**

 - The SEED exists in Gerrit as a Work-In-Progress (WIP) change.
 - Has an assigned SEED number and exists in the index.
 - Not yet ready to receive feedback.

 :bdg-primary:`Open for Comments` **The SEED is soliciting feedback.**

 - The SEED has sufficient substance to be reviewed, as determined by its
   author.
 - A thread for the SEED is created in Discord to promote the proposal and open
   discussion.
 - Interested parties comment on the SEED to evaluate the proposal, raise
   questions and concerns, and express support or opposition.
 - Back and forth discussion between the author and reviewers, resulting in
   modifications to the document.
 - The SEED remains open for as long as necessary. Internally, Pigweed's review
   committee will regularly meet to consider active SEEDs and determine when to
   advance to them the next stage.

 :bdg-warning:`Last Call` **A tentative decision has been reached, but
 commenters may raise final objections.**

 - A tentative decision on the SEED has been made. The decision is issued at the
   best judgement of Pigweed's review committee when they feel there has been
   sufficient discussion on the tradeoffs of the proposal to do so.
 - Transition is triggered manually by a member of the Pigweed team, with a
   comment on the likely outcome of the SEED (acceptance / rejection).
 - On entering Last Call, the visibility of the SEED is widely boosted through
   Pigweed's communication channels (Discord, mailing list, Pigweed Live, etc.)
   to solicit any strong objections from stakeholders.
 - Typically, Last Call lasts for a set period of 7 calendar days, after which
   the final decision is formalized.
 - If any substantial new arguments are raised during Last Call, the review
   committee may decide to re-open the discussion, returning the SEED to a
   commenting phase.

 :bdg-success:`Accepted` **The proposal is ratified and ready for
 implementation.**

 - The SEED is submitted into the Pigweed repository.
 - A tracking bug is created for the implementation, if applicable.
 - The SEED may no longer be modified (except minor changes such as typos).
   Follow-up discussions on the same topic require a new SEED.

 :bdg-danger:`Rejected` **The proposal has been turned down.**

 - The SEED is submitted into the Pigweed repository to provide a permanent
   record of the considerations made for future reference.
 - The SEED may no longer be modified.

 :bdg-secondary:`Deprecated` **The proposal was originally accepted and
 implemented but later removed.**

 - The proposal was once implemented but later undone.
 - The SEED's changelog contains justification for the deprecation.

 :bdg-info:`Superseded` **The proposal was originally accepted and implemented
 but significant portions were later overruled by a different SEED.**

 - A newer SEED proposal revisits the same topic and proposal and redesigns
   significant parts of the original.
 - The SEED is marked as superseded with a reference to the newer proposal.

 ---------
 Rationale
 ---------

 Document format
 ---------------
 Three different documentation formats are considered for SEEDs:

 - **ReST:** Used for Pigweed's existing documentation, making it a natural
   option.
 - **Google Docs:** The traditional way of writing SEED-like investigation and
   design documents.
 - **Markdown:** Ubiquitous across open-source projects, with extensive tooling
   available.

 Summary
 ^^^^^^^
 Based on the evaluated criteria, ReST documents provide the best overall SEED
 experience. The primary issues with ReST exist around contributor tooling, which
 may be mitigated with additional investment from the Pigweed team.

 The table below details the main criteria evaluated for each format, with more
 detailed explanations following.

 .. list-table::
    :widths: 55 15 15 15
    :header-rows: 1

    * - Criterion
      - ReST
      - Markdown
      - Google Docs
    * - Straightforward integration with existing docs
      - ✅
      - ❌
      - ❌
    * - Indexable on `pigweed.dev <https://pigweed.dev>`_
      - ✅
      - ✅
      - ❌
    * - Auditable through source control
      - ✅
      - ✅
      - ❌
    * - Archive of review comments and changes
      - ✅
      - ✅
      - ❌
    * - Accessible to contributors
      - ❌
      - ✅
      - ✅
    * - Extensive styling and formatting options
      - ✅
      - ❌
      - ✅
    * - Easy sharing between Google and external contributors
      - ✅
      - ✅
      - ❌

 Integration
 ^^^^^^^^^^^
 .. admonition:: Goal

    SEED documents should seamlessly integrate with the rest of Pigweed's docs.

 As all of Pigweed's documentation is written using ReST, it becomes a natural
 choice for SEEDs. The use of other formats requires additional scaffolding and
 may not provide as seamless of an experience.

 Indexability
 ^^^^^^^^^^^^
 .. admonition:: Goal

    Design decisions in SEEDs should be readily available for Pigweed users.

 `pigweed.dev <https://pigweed.dev>`_ has a search function allowing users to
 search the site for Pigweed-related keywords. As SEEDs contain design discussion
 and rationales, having them appear in these searches offers useful information
 to users.

 The search function is provided by Pigweed's Sphinx build, so only documents
 which exist as part of that (ReST / Markdown) are indexed.

 Auditability
 ^^^^^^^^^^^^
 .. admonition:: Goal

    Changes to SEED documents should be reviewed and recorded.

 ReST and Markdown documents exist directly within Pigweed's source repository
 after being submitted, requiring any further changes to go through a code
 review process.

 Conversely, Google Docs may be edited by anyone with access, making them prone
 to unintentional modification.

 Archive of discussions
 ^^^^^^^^^^^^^^^^^^^^^^
 .. admonition:: Goal

    Discussions during the review of a SEED should be well-archived for
    future reference.

 ReST and Markdown documentation are submitted through Gerrit and follow the
 standard code review process. Review comments on the changes are saved in
 Gerrit and are easily revisited. Incremental updates to the SEED during the
 review process are saved as patch sets.

 Comments in Google Docs are more difficult to find once they are resolved, and
 document changes do not exist as clearly-defined snapshots, making the history
 of a SEED harder to follow.

 Accessibility
 ^^^^^^^^^^^^^
 .. admonition:: Goal

    SEEDs should be easy for contributors to write.

 Both Markdown and Google Docs are easy to write, familiar to many, and have
 extensive tooling available. SEED documents can be written outside of the
 Pigweed ecosystem using authors' preferred tools.

 ReST, on the other hand, is an unfamiliar and occasionally strange format, and
 its usage for SEEDs is heavily tied to Pigweed's documentation build. Authors
 are required to set up and constantly re-run this build, slowing iteration.

 Format and styling
 ^^^^^^^^^^^^^^^^^^
 .. admonition:: Goal

    SEED authors should have options for formatting various kinds of information
    and data in their proposals.

 Markdown intentionally only offers limited control over document formatting,
 whereas ReST has a wide selection of directives and Google Docs functions as a
 traditional WYSIWYG editor, making them far more flexible.

 Sharing between Google and non-Google
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 .. admonition:: Goal

    Both Google and non-Google contributors should easily be able to write and
    review SEEDs.

 Due to security and legal concerns, managing ownership of Google Docs between
 internal and external contributors is nontrivial.

 Text documentation formats like Markdown and ReST live within the Pigweed
 repository, and as such follow the standard code contribution process.
	.. _seed-0001:

	======================
	0001: The SEED Process
	======================

	.. card::
	:fas:`seedling` SEED-0001: :ref:`The SEED Process<seed-0001>`

	:octicon:`comment-discussion` Status:
	:bdg-primary:`Open for Comments`
	:octicon:`chevron-right`
	:bdg-secondary-line:`Last Call`
	:octicon:`chevron-right`
	:bdg-secondary-line:`Accepted`
	:octicon:`kebab-horizontal`
	:bdg-secondary-line:`Rejected`

	:octicon:`calendar` Proposal Date: 2022-10-31

	:octicon:`code-review` CL: `pwrev/116577 <https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/116577>`_

	-------
	Summary
	-------
	SEEDs are the process through which substantial changes to Pigweed are proposed,
	reviewed, and decided by community stakeholders to collaboratively drive the
	project in a favorable direction.

	This document outlines the SEED process at a high level. Details about how SEEDs
	should be written and structured are described in :ref:`seed-0002`.

	----------
	Motivation
	----------
	As Pigweed and its community grow, it becomes important to ensure that the
	Pigweed team, Pigweed users, and other community stakeholders align on the
	future of the project. To date, development of Pigweed has primarily been
	driven by the core team, and community feedback has been mostly informal and
	undocumented.

	SEEDs are a formalized process for authoring, reviewing, and ratifying proposed
	changes to Pigweed.

	The SEED process has several goals.

	- Increase the visibility of proposed changes to Pigweed early on and allow
	interested parties to engage in their design.

	- Maintain a public record of design decisions rendered during Pigweed's
	development and the rationales behind them.

	- Ensure consistent API design across Pigweed modules through a formal team-wide
	review process.

	Active SEEDs are discussed by the community through Gerrit code review comments
	as well as a SEEDs chatroom in Pigweed's Discord server. Decisions are
	ultimately rendered by a review committee of Pigweed team members.

	------------------------
	When is a SEED required?
	------------------------
	SEEDs should be written by any developer wishing to make a "substantial" change
	to Pigweed. Whether or not a change is considered "substantial" varies depending
	on what parts of Pigweed it touches and may change over time as the project
	evolves. Some general guidelines are established below.

	Examples of changes considered "substantial" include, but are not limited to:

	- Adding a new top-level module.

	- Modifying a widely-used public API.

	- A breaking update to typical Pigweed user workflows (bootstrap, build setup,
	``pw`` commands, etc.).

	- Changing any data interchange or storage protocol or format (e.g. transport
	protocols, flash layout), unless the change is small and backwards compatible
	(e.g. adding a field to an exchanged Protobuf message).

	- Changes to Pigweed's code policy, style guides, or other project-level
	guidelines.

	- Whenever a Pigweed team member asks you to write a SEED.

	Conversely, the following changes would likely not require a SEED:

	- Fixing typos.

	- Refactoring internal module code without public API changes.

	- Adding minor parallel operations to existing APIs (e.g.
	``Read(ConstByteSpan)`` vs ``Read(const byte*, size_t)``).

	If you're unsure whether a change you wish to make requires a SEED, it's worth
	asking the Pigweed team in our Discord server prior to writing any code.

	-------
	Process
	-------
	Suppose you'd like to propose a new Pigweed RPC Over Smoke Signals protocol.

	#. If you haven't already, clone the Pigweed repository and set it up locally,
	following the :ref:`docs-getting-started` guide.

	#. Copy the `SEED template <0002-template>`_ to create the RST file for your
	SEED. As you don't yet have a SEED number, use XXXX as a placeholder,
	followed by the lowercase title of the proposal, with words separated by
	hyphens.

	.. code-block:: sh

	cp seed/0002-template.rst seed/XXXX-pw_rpc-over-smoke-signals.rst

	#. Push up the template to Gerrit, marking it as a Work-In-Progress change.
	From here, you may fill the template out with the content of your proposal
	at your convenience.

	#. At any point, you may claim a SEED number by opening the
	`SEED index <0000-index>`_ and taking the next available number by inserting
	a row into the ``toctree`` table. Link the entry to the WIP change for your
	SEED.

	.. code-block:: rst

	.. toctree::

	0001-the-seed-process
	...
	5308-some-other-seed
	5309: pw_rpc Over Smoke Signals<https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/116577>

	#. Commit your change to the index (and nothing else) with the commit message
	``SEED-xxxx: Claim SEED number``.

	.. code-block:: sh

	git add seed/0000-index.rst
	git commit -m "SEED-5309: Claim SEED number"

	#. Push up a changelist (CL) to Gerrit following the :ref:`docs-contributing`
	guide and add GWSQ as a reviewer. Set ``Pigweed-Auto-Submit`` to +1.

	.. image:: 0001-the-seed-process/seed-index-gerrit.png

	#. Once your CL has been reviewed and submitted, the SEED number belongs to you.
	Update your document's template and filename with this number.

	#. When you feel you have enough substantive content in your proposal to be
	reviewed, push it up to Gerrit and switch the change from WIP to Active.
	This will begin the open comments period.

	#. Engage with reviewers to iterate on your proposal through its comment period.

	#. When a tentative decision has been reached, a Pigweed team member will
	comment on your proposal with a summary of the discussion and reasoning,
	moving it into its Last Call phase (as described in the :ref:`Lifecycle
	<seed-0001-lifecycle>` section).

	#. Following the conclusion of the Last Call period, a Pigweed team member will
	sign off on the CL with a +2 vote, allowing it to be submitted. Update the
	reference in the SEED index with the link to your document and submit the CL.

	.. code-block:: rst

	.. toctree::

	0001-the-seed-process
	...
	5308-some-other-seed
	5309-pw_rpc-over-smoke-signals

	--------------
	SEED documents
	--------------
	SEEDs are written as ReST documents integrated with the rest of Pigweed's
	documentation. They live directly within the core Pigweed repository, under a
	top-level ``seed/`` subdirectory.

	The structure of SEED documents themselves, their format, required sections, and
	other considerations are outlined in :ref:`seed-0002`.

	The first 100 SEEDs (0000-0100) are Meta-SEEDs. These are reserved for
	internal Pigweed usage and generally detail SEED-related processes. Unlike
	regular SEEDs, Meta-SEEDs are living documents which may be revised over time.

	.. _seed-0001-lifecycle:

	-----------------------
	The lifecycle of a SEED
	-----------------------
	A SEED proposal undergoes several phases between first being published and a
	final decision.

	:bdg-primary-line:`Draft` **The SEED is a work-in-progress and not yet ready
	for comments.**

	- The SEED exists in Gerrit as a Work-In-Progress (WIP) change.
	- Has an assigned SEED number and exists in the index.
	- Not yet ready to receive feedback.

	:bdg-primary:`Open for Comments` The SEED is soliciting feedback.

	- The SEED has sufficient substance to be reviewed, as determined by its
	author.
	- A thread for the SEED is created in Discord to promote the proposal and open
	discussion.
	- Interested parties comment on the SEED to evaluate the proposal, raise
	questions and concerns, and express support or opposition.
	- Back and forth discussion between the author and reviewers, resulting in
	modifications to the document.
	- The SEED remains open for as long as necessary. Internally, Pigweed's review
	committee will regularly meet to consider active SEEDs and determine when to
	advance to them the next stage.

	:bdg-warning:`Last Call` **A tentative decision has been reached, but
	commenters may raise final objections.**

	- A tentative decision on the SEED has been made. The decision is issued at the
	best judgement of Pigweed's review committee when they feel there has been
	sufficient discussion on the tradeoffs of the proposal to do so.
	- Transition is triggered manually by a member of the Pigweed team, with a
	comment on the likely outcome of the SEED (acceptance / rejection).
	- On entering Last Call, the visibility of the SEED is widely boosted through
	Pigweed's communication channels (Discord, mailing list, Pigweed Live, etc.)
	to solicit any strong objections from stakeholders.
	- Typically, Last Call lasts for a set period of 7 calendar days, after which
	the final decision is formalized.
	- If any substantial new arguments are raised during Last Call, the review
	committee may decide to re-open the discussion, returning the SEED to a
	commenting phase.

	:bdg-success:`Accepted` **The proposal is ratified and ready for
	implementation.**

	- The SEED is submitted into the Pigweed repository.
	- A tracking bug is created for the implementation, if applicable.
	- The SEED may no longer be modified (except minor changes such as typos).
	Follow-up discussions on the same topic require a new SEED.

	:bdg-danger:`Rejected` The proposal has been turned down.

	- The SEED is submitted into the Pigweed repository to provide a permanent
	record of the considerations made for future reference.
	- The SEED may no longer be modified.

	:bdg-secondary:`Deprecated` **The proposal was originally accepted and
	implemented but later removed.**

	- The proposal was once implemented but later undone.
	- The SEED's changelog contains justification for the deprecation.

	:bdg-info:`Superseded` **The proposal was originally accepted and implemented
	but significant portions were later overruled by a different SEED.**

	- A newer SEED proposal revisits the same topic and proposal and redesigns
	significant parts of the original.
	- The SEED is marked as superseded with a reference to the newer proposal.

	---------
	Rationale
	---------

	Document format
	---------------
	Three different documentation formats are considered for SEEDs:

	- ReST: Used for Pigweed's existing documentation, making it a natural
	option.
	- Google Docs: The traditional way of writing SEED-like investigation and
	design documents.
	- Markdown: Ubiquitous across open-source projects, with extensive tooling
	available.

	Summary
	^^^^^^^
	Based on the evaluated criteria, ReST documents provide the best overall SEED
	experience. The primary issues with ReST exist around contributor tooling, which
	may be mitigated with additional investment from the Pigweed team.

	The table below details the main criteria evaluated for each format, with more
	detailed explanations following.

	.. list-table::
	:widths: 55 15 15 15
	:header-rows: 1

	* - Criterion
	- ReST
	- Markdown
	- Google Docs
	* - Straightforward integration with existing docs
	- ✅
	- ❌
	- ❌
	* - Indexable on `pigweed.dev <https://pigweed.dev>`_
	- ✅
	- ✅
	- ❌
	* - Auditable through source control
	- ✅
	- ✅
	- ❌
	* - Archive of review comments and changes
	- ✅
	- ✅
	- ❌
	* - Accessible to contributors
	- ❌
	- ✅
	- ✅
	* - Extensive styling and formatting options
	- ✅
	- ❌
	- ✅
	* - Easy sharing between Google and external contributors
	- ✅
	- ✅
	- ❌

	Integration
	^^^^^^^^^^^
	.. admonition:: Goal

	SEED documents should seamlessly integrate with the rest of Pigweed's docs.

	As all of Pigweed's documentation is written using ReST, it becomes a natural
	choice for SEEDs. The use of other formats requires additional scaffolding and
	may not provide as seamless of an experience.

	Indexability
	^^^^^^^^^^^^
	.. admonition:: Goal

	Design decisions in SEEDs should be readily available for Pigweed users.

	`pigweed.dev <https://pigweed.dev>`_ has a search function allowing users to
	search the site for Pigweed-related keywords. As SEEDs contain design discussion
	and rationales, having them appear in these searches offers useful information
	to users.

	The search function is provided by Pigweed's Sphinx build, so only documents
	which exist as part of that (ReST / Markdown) are indexed.

	Auditability
	^^^^^^^^^^^^
	.. admonition:: Goal

	Changes to SEED documents should be reviewed and recorded.

	ReST and Markdown documents exist directly within Pigweed's source repository
	after being submitted, requiring any further changes to go through a code
	review process.

	Conversely, Google Docs may be edited by anyone with access, making them prone
	to unintentional modification.

	Archive of discussions
	^^^^^^^^^^^^^^^^^^^^^^
	.. admonition:: Goal

	Discussions during the review of a SEED should be well-archived for
	future reference.

	ReST and Markdown documentation are submitted through Gerrit and follow the
	standard code review process. Review comments on the changes are saved in
	Gerrit and are easily revisited. Incremental updates to the SEED during the
	review process are saved as patch sets.

	Comments in Google Docs are more difficult to find once they are resolved, and
	document changes do not exist as clearly-defined snapshots, making the history
	of a SEED harder to follow.

	Accessibility
	^^^^^^^^^^^^^
	.. admonition:: Goal

	SEEDs should be easy for contributors to write.

	Both Markdown and Google Docs are easy to write, familiar to many, and have
	extensive tooling available. SEED documents can be written outside of the
	Pigweed ecosystem using authors' preferred tools.

	ReST, on the other hand, is an unfamiliar and occasionally strange format, and
	its usage for SEEDs is heavily tied to Pigweed's documentation build. Authors
	are required to set up and constantly re-run this build, slowing iteration.

	Format and styling
	^^^^^^^^^^^^^^^^^^
	.. admonition:: Goal

	SEED authors should have options for formatting various kinds of information
	and data in their proposals.

	Markdown intentionally only offers limited control over document formatting,
	whereas ReST has a wide selection of directives and Google Docs functions as a
	traditional WYSIWYG editor, making them far more flexible.

	Sharing between Google and non-Google
	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	.. admonition:: Goal

	Both Google and non-Google contributors should easily be able to write and
	review SEEDs.

	Due to security and legal concerns, managing ownership of Google Docs between
	internal and external contributors is nontrivial.

	Text documentation formats like Markdown and ReST live within the Pigweed
	repository, and as such follow the standard code contribution process.