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g2boojum |
1.1 |
GLEP: 1
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Title: GLEP Purpose and Guidelines
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g2boojum |
1.8 |
Version: $Revision: 1.7 $
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Last-Modified: $Date: 2003/07/19 12:09:20 $
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g2boojum |
1.3 |
Author: Grant Goodyear <g2boojum@gentoo.org>
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liquidx |
1.7 |
Status: Active
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g2boojum |
1.1 |
Type: Informational
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Content-Type: text/x-rst
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g2boojum |
1.4 |
Created: 31-May-2003
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g2boojum |
1.5 |
Post-History: 1-Jun-2003, 2-Jul-2003
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g2boojum |
1.1 |
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Credits
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=======
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The GLEP concept, and, in fact, much of the text of this document,
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is liberally stolen from Python's [#Python]_ PEPs
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[#PEPS]_, especially
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PEP-0001 [#PEP1]_ by Barry A. Warsaw, Jeremy Hylton, and David Goodger.
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What is a GLEP?
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===============
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GLEP stands for "Gentoo Linux Enhancement Proposal". A GLEP is a design
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document providing information to the Gentoo Linux community, or describing
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a new feature for Gentoo Linux. The GLEP should provide a concise technical
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specification of the feature and rationale for the feature.
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We intend GLEPs to be the primary mechanisms for proposing *significant* new
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features, for collecting community input on an issue, and for
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documenting the design decisions that have gone into Gentoo Linux. The GLEP
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author is responsible for building consensus within the community and
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documenting dissenting opinions.
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Because the GLEPs are maintained as text files under CVS control, their
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revision history is the historical record of the feature proposal
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[#CVS]_.
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Kinds of GLEPs
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==============
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There are two kinds of GLEPs. A Standards Track GLEP describes a new feature
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or implementation for Gentoo Linux. An Informational GLEP describes provides
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general guidelines or information to the Gentoo Linux community, but does not
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propose a new feature. Informational GLEPs do not necessarily represent a
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Gentoo Linux community consensus or recommendation, so users and implementors
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are free to ignore Informational GLEPs or follow their advice.
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GLEP Work Flow
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==============
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The GLEP editors assign GLEP numbers and change their status. The current
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g2boojum |
1.5 |
GLEP editors are Grant Goodyear and Alastair Tse. Please send all
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g2boojum |
1.1 |
GLEP-related email to <glep@gentoo.org>.
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The GLEP process begins with a new idea for Gentoo Linux. It is highly
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recommended that a single GLEP contain a single key proposal or new idea. The
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more focussed the GLEP, the more successful it tends to be. The GLEP editors
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reserve the right to reject GLEP proposals if they appear too unfocussed or
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too broad. If in doubt, split your GLEP into several well-focussed ones.
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Each GLEP must have a champion -- someone who writes the GLEP using the style
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and format described below, shepherds the discussions in the appropriate
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forums, and attempts to build community consensus around the idea. The GLEP
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champion (a.k.a. Author) should first attempt to ascertain whether the idea is
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GLEP-able. Small enhancements or patches often don't need a GLEP and can be
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injected into the Gentoo Linux development work flow with an enhancement "bug"
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submitted to the Gentoo Linux bugzilla [#BUGS]_.
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g2boojum |
1.5 |
The GLEP champion then emails the GLEP editors <glep@gentoo.org> with a
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g2boojum |
1.1 |
proposed title and a rough, but fleshed out, draft of the GLEP. This draft
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must be written in GLEP style as described below.
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g2boojum |
1.8 |
If the GLEP editor accepts the GLEP, he will assign the GLEP a number, label
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it as Standards Track (a better name would be nice here -- suggestions?) or
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Informational, give it status "Draft", and create and check-in the initial
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draft of the GLEP. The GLEP editors will not unreasonably deny a GLEP.
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Reasons for denying GLEP status include duplication of effort, being
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technically unsound, not providing proper motivation or addressing backwards
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compatibility, or not in keeping with Gentoo Linux philosophy.
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g2boojum |
1.1 |
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If a pre-GLEP is rejected, the author may elect to take the pre-GLEP to the
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gentoo-dev@gentoo.org mailing list to help flesh it out, gain feedback and
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consensus from the community at large, and improve the GLEP for re-submission.
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The author of the GLEP is then responsible for posting the GLEP to the
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gentoo-dev mailing list and to the Gentoo Linux forums [#FORUMS]_, and
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marshaling community support for it. As updates are necessary, the GLEP
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author can check in new versions if they have CVS commit permissions, or can
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email new GLEP versions to the GLEP editors for committing.
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Standards Track GLEPs consist of two parts, a design document and a reference
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implementation. The GLEP should be reviewed and accepted before a reference
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implementation is begun, unless a reference implementation will aid people in
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studying the GLEP. Standards Track GLEPs must include an implementation -- in
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the form of code, patch, or URL to same -- before it can be considered Final.
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GLEP authors are responsible for collecting community feedback on a GLEP
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before submitting it for review. A GLEP that has not been discussed on
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gentoo-dev@gentoo.org and/or the Gentoo Linux forums [#FORUMS]_ will not be
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accepted. However, wherever possible, long open-ended discussions on public
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mailing lists should be avoided. Strategies to keep the discussions efficient
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include setting up a specific forums thread for the topic, having the GLEP
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author accept private comments in the early design phases, etc. GLEP authors
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should use their discretion here.
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Once the authors have completed a GLEP, they must inform the GLEP editors that
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g2boojum |
1.5 |
it is ready for review. GLEPs are reviewed by the appropriate Gentoo
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g2boojum |
1.8 |
Manager [#MANAGER]_, who may approve or reject a GLEP outright, or
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g2boojum |
1.1 |
send it back to the author(s) for revision. For a GLEP that is pre-determined
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g2boojum |
1.8 |
to be approvable (e.g., it is an obvious win as-is and/or its implementation
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g2boojum |
1.5 |
has already been checked in) the appropriate Gentoo Manager [#MANAGER]_
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g2boojum |
1.1 |
may also initiate a GLEP review, first notifying the GLEP author(s) and giving
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them a chance to make revisions.
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g2boojum |
1.8 |
For a GLEP to be approved it must meet certain minimum criteria. It must be a
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g2boojum |
1.1 |
clear and complete description of the proposed enhancement. The enhancement
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must represent a net improvement. The proposed implementation, if applicable,
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must be solid and must not complicate the distribution unduly. Finally, a
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proposed enhancement must satisfy the philosophy of Gentoo Linux.
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Once a GLEP has been accepted, the reference implementation must be completed.
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When the reference implementation is complete and accepted, the status will be
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changed to "Final".
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A GLEP can also be assigned status "Deferred". The GLEP author or editor can
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assign the GLEP this status when no progress is being made on the GLEP. Once
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a GLEP is deferred, the GLEP editor can re-assign it to draft status.
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A GLEP can also be "Rejected". Perhaps after all is said and done it was not
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a good idea. It is still important to have a record of this fact.
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GLEPs can also be replaced by a different GLEP, rendering the original
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obsolete (where version 2 of a policy, for example, might replace version 1).
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GLEP work flow is as follows::
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Draft -> Accepted -> Final -> Replaced
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^
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+----> Rejected
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v
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Deferred
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Some Informational GLEPs may also have a status of "Active" if they are never
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meant to be completed. E.g. GLEP 1 (this GLEP).
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What belongs in a successful GLEP?
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==================================
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Each GLEP should have the following parts:
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1. Preamble -- RFC 822 style headers containing meta-data about the
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GLEP, including the GLEP number, a short descriptive title (limited
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to a maximum of 44 characters), the names, and optionally the
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contact info for each author, etc.
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2. Abstract -- a short (~200 word) description of the technical issue
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being addressed.
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3. Motivation -- The motivation is critical for GLEPs that want to
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g2boojum |
1.5 |
modify Gentoo Linux functionality. It should clearly explain why the
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g2boojum |
1.1 |
existing functionality or policy is inadequate to address the problem that
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the GLEP solves. GLEP submissions without sufficient motivation may be
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rejected outright.
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4. Specification -- The technical specification should describe the
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specific areas of Gentoo Linux that would be touched by this GLEP. If new
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functionality is being introduced, what packages will that functionality
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affect? If new policy, who will be affected?
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5. Rationale -- The rationale fleshes out the specification by
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describing what motivated the design and why particular design decisions
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were made. It should describe alternate designs that were considered and
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related work, e.g. how the feature is supported in other distributions.
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The rationale should provide evidence of consensus within the community and
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discuss important objections or concerns raised during discussion.
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6. Backwards Compatibility -- All GLEPs
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must include a section describing any issues of backwards incompatibilities
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and their severity. The GLEP must explain how the author proposes to deal
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with these incompatibilities. (Even if there are none, this section should
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be included to clearly state that fact.) GLEP submissions without a
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sufficient backwards compatibility treatise may be rejected outright.
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7. Reference Implementation -- The reference implementation must be
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completed before any GLEP is given status "Final", but it need not be
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completed before the GLEP is accepted. It is better to finish the
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specification and rationale first and reach consensus on it before writing
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code or significantly modifying ebuilds.
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8. Copyright/public domain -- Each GLEP must either be explicitly
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labelled as placed in the public domain (see this GLEP as an example) or
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licensed under the Open Publication License [#OPL].
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GLEP Formating and Template
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===========================
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g2boojum |
1.5 |
GLEPs are written either in Gentoo Linux Guide-XML [#GUIDEXML]_ or in
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a just-barely-marked-up version of plain ASCII text
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g2boojum |
1.1 |
called ReStructuredText [#ReSTHOME]_ that is then converted to HTML using
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Docutils [#DOCUTILS]_. Using ReStructuredText GLEPs allows for rich markup
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that is still quite easy to read, but results in much better-looking and more
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functional HTML. Moreover, it should be straightforward to convert GLEPs to
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Gentoo Linux guide xml [#GUIDEXML]_ if needed. GLEP 2 contains a boilerplate
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template [#ReST]_ for use with ReStructuredText GLEPs.
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GLEP Header Preamble
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====================
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Each GLEP must begin with an RFC 2822 style header preamble. The headers
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must appear in the following order. Headers marked with "*" are
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optional and are described below. All other headers are required. ::
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GLEP: <glep number>
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Title: <glep title>
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Version: <cvs version string>
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Last-Modified: <cvs date string>
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Author: <list of authors' real names and optionally, email addrs>
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* Discussions-To: <email address>
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Status: <Draft | Active | Accepted | Deferred | Rejected |
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Final | Replaced>
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Type: <Informational | Standards Track>
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* Content-Type: <text/plain | text/x-rst>
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* Requires: <glep numbers>
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Created: <date created on, in dd-mmm-yyyy format>
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Post-History: <dates of postings to gentoo-dev>
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* Replaces: <glep number>
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* Replaced-By: <glep number>
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The Author header lists the names, and optionally the email addresses
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of all the authors/owners of the GLEP. The format of the Author header
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value must be
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Random J. User <address@dom.ain>
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if the email address is included, and just
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Random J. User
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if the address is not given.
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If there are multiple authors, each should be on a separate line
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following RFC 2822 continuation line conventions. Note that personal
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email addresses in GLEPs will be obscured as a defense against spam
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harvesters.
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While a GLEP is in private discussions (usually during the initial Draft
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phase), a Discussions-To header will indicate the mailing list or URL where
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the GLEP is being discussed. No Discussions-To header is necessary if the
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GLEP is being discussed privately with the author, or on the gentoo-dev
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mailing list. Note that email addresses in the Discussions-To header will not
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be obscured.
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The Type header specifies the type of GLEP: Informational or Standards
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Track.
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g2boojum |
1.5 |
The format of a GLEP is specified with a Content-Type header, which
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should read "text/xml" for Gentoo Guide XML or
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"text/x-rst" for ReStructuredText GLEPs (see GLEP 2
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g2boojum |
1.1 |
[#ReST]_).
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The Created header records the date that the GLEP was assigned a number, while
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Post-History is used to record the dates of when new versions of the GLEP are
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posted to gentoo-dev. Both headers should be in dd-mmm-yyyy format, e.g.
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14-Aug-2001.
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GLEPs may have a Requires header, indicating the GLEP numbers that this GLEP
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depends on.
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GLEPs may also have a Replaced-By header indicating that a GLEP has been
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rendered obsolete by a later document; the value is the number of the GLEP
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that replaces the current document. The newer GLEP must have a Replaces
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header containing the number of the GLEP that it rendered obsolete.
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Reporting GLEP Bugs, or Submitting GLEP Updates
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===============================================
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How you report a bug, or submit a GLEP update depends on several factors, such
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as the maturity of the GLEP, the preferences of the GLEP author, and the
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nature of your comments. For the early draft stages of the GLEP, it's
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probably best to send your comments and changes directly to the GLEP author.
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For more mature, or finished GLEPs you may want to submit corrections to the
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Gentoo Linux bugzilla [#BUGS]_ so that your changes don't get lost. If the GLEP
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author is a Gentoo Linux developer, assign the bug/patch to him, otherwise
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assign it to the GLEP editors.
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When in doubt about where to send your changes, please check first with the
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GLEP author and/or GLEP editors.
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GLEP authors who are also Gentoo Linux developers can update the GLEPs
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themselves by using "cvs commit" to commit their changes.
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Transferring GLEP Ownership
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===========================
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It occasionally becomes necessary to transfer ownership of GLEPs to a new
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champion. In general, we'd like to retain the original author as a co-author
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of the transferred GLEP, but that's really up to the original author. A good
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reason to transfer ownership is because the original author no longer has the
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time or interest in updating it or following through with the GLEP process, or
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has fallen off the face of the 'net (i.e. is unreachable or not responding to
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email). A bad reason to transfer ownership is because you don't agree with
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the direction of the GLEP. We try to build consensus around a GLEP, but if
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that's not possible, you can always submit a competing GLEP.
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If you are interested in assuming ownership of a GLEP, send a message asking
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to take over, addressed to both the original author and the GLEP editors
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<glep@gentoo.org>. If the original author doesn't respond to email in a
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timely manner, the GLEP editors will make a unilateral decision (it's not like
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such decisions can't be reversed :).
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References and Footnotes
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========================
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.. [#PYTHON] http://www.python.org
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.. [#PEPS] http://www.python.org/peps
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.. [#PEP1] http://www.python.org/peps/pep-0001.html
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.. [#CVS] This historical record is available by the normal CVS commands
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for retrieving older revisions. For those without direct access to the CVS
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tree, you can browse the current and past GLEP revisions via the Gentoo
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Linux viewcvs web site at
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klieber |
1.6 |
http://www.gentoo.org/cgi-bin/viewcvs.cgi/gentoo/xml/htdocs/proj/en/glep/
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g2boojum |
1.1 |
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.. [#ReST] GLEP 2, Sample ReStructuredText GLEP Template,
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g2boojum |
1.2 |
(http://glep.gentoo.org/glep-0002.html)
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g2boojum |
1.1 |
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.. [#BUGS] http://bugs.gentoo.org
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.. [#FORUMS] http://forums.gentoo.org
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g2boojum |
1.5 |
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.. [#MANAGER] http://www.gentoo.org/doc/en/management-structure.xml
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g2boojum |
1.1 |
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.. [#OPL] http://www.opencontent.org/openpub/
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.. [#ReSTHOME] http://docutils.sourceforge.net/rst.html
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.. [#GUIDEXML] http://www.gentoo.org/doc/en/xml-guide.xml
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.. [#DOCUTILS] http://docutils.sourceforge.net/
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Copyright
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=========
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This document has been placed in the public domain.
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