Planet Smalltalk

Those of you who read the squeak-dev mailing list will know that the list is currently going through the annual frenzy of discussion about the nature and direction of Squeak, including much to-and-fro over such topics as: the original vision of the founders of Squeak; the tangled relationship between eToys and the rest of the Squeak environment and community; the reasons behind the Pharo project and how much its goals really differ from those of Squeak; whether children should be locked in the nursery or allowed to roam freely into every room of the house; and much more. If you have time (and some light body armour), it’s well worth reading through the hundreds of emails that have been written which explore and interpret much of the history and philosophy of Squeak.

This discussion has motivated the Squeak Oversight Board to look at one topic that caused much debate: how to manage the development of Squeak. Driven by a concern that there are many hurdles that discourage wide-spread participation in the contribution process, the Board have put forward a new community development model that they hope will “enable the community at large to improve Squeak, the core of the system and its supporting libraries”.

Based on processes that have been shown to work in commercial settings, the Board’s model includes the use of Monticello as the primary source code management system, free access for the developers to the main repositories (trunk, tests, and inbox) and an incremental update process for both developers and users of Squeak.

Obviously, such a change has sparked off its own debate, and important questions are being hammered out on the squeak dev mailing list. If you care about the health of the Squeak environment, its future direction, and the future support for your own favourite applications, this is a key moment for you to understand and contribute to the discussion which is continuing on the squeak-dev mailing list (see archives), on irc, and on the Board’s blog.

In the board meeting today we had a nice discussion about how to move forward with a new community development model for Squeak. Here is an overview of the model and what will happen next:

The goals

The goal of this process is to get rid of as many hurdles as possible in the contribution process. We are trying to enable the community at large to improve Squeak, the core of the system and its supporting libraries.

To do this, we are adopting processes that have been shown to work in commercial settings: The use of Monticello as the primary source code management system, free access for the developers to the main repositories, an incremental update process for both developers and users of Squeak.

Repositories

We will be setting up the following Monticello repositories:

* http://source.squeak.org/trunk

This will be the main repository for ongoing development. New code will be committed here, the repository will be world-readable and writable for the core-dev group.

* http://source.squeak.org/tests

This is the main repository for unit tests. It will be world-readable AND world-writable. We encourage everyone to write more tests and commit them, improve the existing tests and bring in entirely new test suites.

* http://source.squeak.org/inbox

This repository is intended as dropbox. It’s usage will depend on what we make it out to be. The idea is to have it world-readable and world-writable, too.

Developer access

The board will manage developer access to the repositories at source.squeak.org. In the next days we’ll send out a few “you are pre-approved” messages to people who have proven to be active developers in the past in order to invite them to become a core developer.

If you can’t wait and absolutely want to be in on the action you can register yourself at http://source.squeak.org/ and send message to the board asking for access but most of the regular contributors (you know who you are) will be invited anyway.

Rules of Engagement

If you have used Monticello in projects with more than two developers in the past you already know the drill. If not, here are some useful guidelines:

* Merge often. In particular when you pick up work and right before you intend to commit.

* Exercise caution. This is a running system and breaking it needlessly is generally frowned upon.

* Restrain yourself. Getting developer access doesn’t mean you are free to put in every pet extension you always wanted to have without discussion.

* If in doubt, ask. This is the corollary to the restrain yourself rule. You’re not under pressure to ship a product, so you have the time to send a note saying “hey, I’m planning to fix this old issue and it may have some side effect here or there. Anyone having a problem with that?”

>>> I’ll add a Squeak-dev exception here: Any response from any non-developer can be entirely ignored in this context.

* You break it, you fix it. If you change something you are generally expected to take care of the consequences, though there are some exceptions. If in doubt, ask

* Do good and talk about it. When you’re done with whatever it is you’ve been working on let people know about it. It can be as short as a note to Squeak-dev saying “hey, some of you might care that I’ve fixed the long standing bug with xyz. Update and enjoy”

I think that roughly covers it. Basically you will be working with a dozen (hopefully more) other developers on Squeak and we’ll all have to learn how to make this work successfully.

Updating

We are in the process of developing an update process that can work seamlessly with Monticello. An early experiment is described here. We are evaluating alternative approaches, in particular the use of Installer since there are some shortcomings when using Monticello Configurations.

Existing Work

It is important to note that we will be trying very hard not to lose any work that is being done for Squeak 3.11. We will start with the package set that was used in the 3.10 release, then we will issue package updates to cover the missing delta up until 3.10.2. Following which we will reissue any changes done for 3.11 into the repositories.

First let me state that we are paying attention to your comments and we do appreciate them but it’s amazing how quickly one hour disappears and there is only so much that can be fit into a single meeting.  Triage is required.

Development Model Progress

Relicensing Release Progress

I’m sure more will be added, feel free to offer your own suggestions.

Attendance was complete and timely this time around: Jecel Mattos de Assumpção Jr, Ken Causey, Bert Freudenberg, Craig Latta,  Andreas Raab, Randal Schwartz, and Igor Stasenko.

We discussed the progress of the relicensing release.  Currently Matthew Fulmer is gathering information in preparation to meet with a representative of the Software Freedom Consortium to plan the next steps toward the completion of the 4.0 relicensing release.

Members of the Squeak Oversight Board have been kindly asked again to appear on Industry Misinterpretations.  Details are still being worked out but expect this episode sometime in September.

The primary topic was Andreas Raab’s proposed development model.  Discussion of this can be found here and here.  There was considerable discussion and even a little debate but ultimately the decision was to support Andreas’ proposal.  Expect Andreas to announce this in more detail soon.

Our next meeting is scheduled for Wednesday, July 15th, 2009.