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=== Is `hg evolve --all` discouraged? Should it be? :) (Kyle Lippincott) === Frequently users at Google just run `hg evolve --all` instead of more focused evolves, and dislike that after `hg evolve --all` they are on the tip-most revision instead of the revision they started on (or potentially the successor of that revision). I'd like to discuss changing this movement behavior (via a flag and/or config option). The subject is based on my (possibly flawed) recollection that the movement is happening because `hg evolve --all; hg co .^^; hg amend; hg evolve --all; hg co .^; hg amend; ...` is really not recommended. |
=== Evolution and relation topic (Kyle Lippincott, Pierre-Yves David) === It is probably worth chatting about evolution in general. Kyle had some specific questions too: Q: Is `hg evolve --all` discouraged? Should it be? :) A: Yes, it is, for various temporary and fundamental reason: Q: Frequently users at Google just run `hg evolve --all` instead of more focused evolves, and dislike that after `hg evolve --all` they are on the tip-most revision instead of the revision they started on (or potentially the successor of that revision). I'd like to discuss changing this movement behavior (via a flag and/or config option) A: This is definitly something we would like to change. especially now that 'hg next'; have some evolution capability. However, more work on the evolution state file is needed. Anyone is welcome to send patch to make progress here. Q: The subject is based on my (possibly flawed) recollection that the movement is happening because `hg evolve --all; hg co .^^; hg amend; hg evolve --all; hg co .^; hg amend; ...` is really not recommended. A: Yes there is a potential marker explosion issue that we need to have a proper answer to. |
Note:
This page is primarily intended for developers of Mercurial.
4.0 Sprint
Contents
- Date and location
- Attendance
- Travel tips
- Sponsors
- Meals
-
Possible Topics
- Project infrastructure (Kevin Bullock)
- Transition
- Topics (Sean Farley, Erik van Zijst, Pierre-Yves David anyone else)
- MergeDriver internals (Siddharth Agarwal, ...)
- StreamClone and Batch wireproto enhancements (durin42, indygreg)
- Evolution and relation topic (Kyle Lippincott, Pierre-Yves David)
- Performance tracking suite (Philippe Pepiot)
- Virtual filesystems for source code (Kyle Lippincott, Durham Goode?)
- Reliability and performance in large Mercurial deployments (Rodrigo Damazio)
- Code Review Tooling (Ryan McElroy)
- Your topic here! (Your Name)
- Sprint Notes
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1. Date and location
The sprint will be held at the Mozilla office in Paris, Oct 7-9. More info about the office can be found at https://wiki.mozilla.org/Paris.
Location point of contact: Gregory Szorc (indygreg) - gps@mozilla.com
If you need a formal invitation for visa purpose, contact the person above.
2. Attendance
Everyone is welcome from core developer to aspiring contributor. Attending a Mercurial sprint is usually a good way to kickstart your contributions and you'll get a large amount of help available for 3 days.
Name |
Coming from |
Need funding |
Hotel |
In Town Dates |
Notes |
Aaron Kushner |
SF |
no |
Ibis Paris Grands Boulevards Opera |
Oct 7-10 |
|
Augie Fackler |
PIT |
no |
The Chess Hotel |
Oct 6-10 |
|
Aurélien Campéas |
Paris |
no |
local |
Oct 7-9 |
|
Alain leufroy |
Paris |
no |
local |
Oct 7-9 |
|
Cotizo Sima |
London |
no |
Best Western Hotel Ronceray Opera |
Oct 7-9 |
|
Denis Laxalde |
France |
no |
TBD |
Oct 7-8 |
|
Durham Goode |
California |
no |
Westminster |
Oct 6-9 |
|
Erik van Zijst |
California |
No |
Best Western Hotel Ronceray Opera |
Oct 4-11 |
|
Gábor Stefanik |
Budapest |
no |
Best Western Anjou Opera |
Oct 6-10 |
|
Gregory Szorc |
SF |
no |
The Chess Hotel |
Oct 5-10 |
|
Jeremy Fitzhardinge |
SF |
no |
Ibis Paris Grands Boulevards Opera |
Oct 7-10 |
|
Katsunori Fujiwara |
Japan |
yes |
Best Western Diva Opera |
Oct 6-10 |
|
Kevin Bullock |
Minnesota |
yes |
Best Western Hotel Opera Drouot |
Oct 5-10 |
|
Kostia Balytskyi |
London |
no |
Westminster |
Oct 6-9 |
|
Kyle Lippincott |
California |
no |
Villathena |
Oct 3-11 |
|
Mads Kiilerich |
Denmark, Unity |
no |
Best Western Hotel Ronceray Opéra |
|
|
Mathias De Maré |
Belgium |
no |
Kyriad Paris Gare du Nord |
Oct 6-9 |
|
Philippe Pepiot |
France |
no |
TBD |
Oct 6-8/9 |
|
Pierre-Yves David |
Paris |
no |
local |
local |
|
Pulkit Goyal |
New Delhi |
yes |
TBD |
Oct 6-10 |
|
Remi Chaintron |
London |
no |
TBD |
TBD |
|
Rodrigo Damazio Bovendorp |
California |
no |
Best Western Hotel Ronceray Opera |
Oct 6-10 |
|
Ryan McElroy |
London |
No |
Westminster Hotel |
Oct 6-10 |
|
Sean Farley |
California |
No |
Best Western Hotel Ronceray Opera |
Oct 4-11 |
|
Siddharth Agarwal |
SF |
no |
Westminster Hotel |
Oct 6-9 |
|
Simon Farnsworth |
London |
No |
Westminster Hotel |
Oct 6-9 |
|
Wez Furlong |
California |
No |
Westminster Hotel |
Oct 6-9 |
|
Yuya Nishihara |
Japan |
maybe |
Richmond Opéra |
Oct 6-10 |
|
Piotr Listkiewicz |
Cracow |
yes |
TBD |
Oct 6-9 |
|
Jun Wu |
London |
no |
Westminster Hotel |
Oct 6-9 |
|
Mateusz Kwapich |
London |
no |
Westminster Hotel |
Oct 6-9 |
|
Stanislau Hlebik |
London |
no |
Westminster Hotel |
Oct 6-9 |
|
Martijn Pieters |
London |
no |
The Westin Paris - Vendome |
Oct 6-9 |
|
3. Travel tips
If you need a smartphone to use while in Paris, http://www.insidr.paris/ is an option.
4. Sponsors
We have funds to pay flights and hotel for a few independent contributors.
Sponsoring Company:
Please offer some sponsoring
Sponsor point of contact: Please offer your service
5. Meals
Having Food delivered for Lunch is usually preferred as it help keeping the timing under control. Dinner is usually taken outside to help people cool off after a day of work.
(Don't forget vegetarian and vegan option)
Meal point of contact: Location not picked yet
Day |
Meal |
Details |
Organizer (when relevant) |
Friday |
Lunch |
|
|
Friday |
Diner |
|
|
Saturday |
Lunch |
|
|
Saturday |
Diner |
|
|
Sunday |
Lunch |
|
|
Sunday |
Diner |
|
|
6. Possible Topics
It worked well at the last sprint to devote some of the time to "unconference"-style sessions, proposed by attendees and scheduled into a grid of timeslots and rooms. Do we want to plan on that again? —KevinBullock
Important things we want to discuss:
6.1. Project infrastructure (Kevin Bullock)
I'll give a report on the current state of the project's infrastructure (server, buildbot, bugzilla, mailing lists, &c.), and walk people thru the config automation we've done via Ansible and Docker. Hoping to get some more people familiar with it so they can solve problems when they arise.
6.2. Transition
Did you knew Mercurial now had a Steering committee ? (and other question related to mpm/transition)
6.3. Topics (Sean Farley, Erik van Zijst, Pierre-Yves David anyone else)
Flesh out topics. Designing a natural and easy-to-use workflow: when should a changeset become public in an average user's workflow?
6.4. MergeDriver internals (Siddharth Agarwal, ...)
Talk (~1h) about internals of MergeDriverPlan + whatever work we end up doing next.
6.5. StreamClone and Batch wireproto enhancements (durin42, indygreg)
Seem related. Streamable and reorderable batch.
6.6. Evolution and relation topic (Kyle Lippincott, Pierre-Yves David)
It is probably worth chatting about evolution in general.
Kyle had some specific questions too:
Q: Is hg evolve --all discouraged? Should it be?
A: Yes, it is, for various temporary and fundamental reason:
Q: Frequently users at Google just run hg evolve --all instead of more focused evolves, and dislike that after hg evolve --all they are on the tip-most revision instead of the revision they started on (or potentially the successor of that revision). I'd like to discuss changing this movement behavior (via a flag and/or config option)
A: This is definitly something we would like to change. especially now that 'hg next'; have some evolution capability. However, more work on the evolution state file is needed. Anyone is welcome to send patch to make progress here.
Q: The subject is based on my (possibly flawed) recollection that the movement is happening because hg evolve --all; hg co .^^; hg amend; hg evolve --all; hg co .^; hg amend; ... is really not recommended.
A: Yes there is a potential marker explosion issue that we need to have a proper answer to.
6.7. Performance tracking suite (Philippe Pepiot)
Talk and demo about PerformanceTrackingSuitePlan
6.8. Virtual filesystems for source code (Kyle Lippincott, Durham Goode?)
Google has had this (for non-Mercurial repos) for a while and Facebook has just started working on something called Eden. It'd be great to discuss how this fits in Mercurial's overall ecosystem, whether anything should go into core and other plans going forward.
6.9. Reliability and performance in large Mercurial deployments (Rodrigo Damazio)
Many companies now have large Mercurial repositories, often hosted in a distributed server environment. I'd like to discuss implications and a few specifics (such as having exponentially-backed-off retries, request batch load-balancing and out-of-order batch replies on the client).
6.10. Code Review Tooling (Ryan McElroy)
A persistent issue for people wishing to provide a little bit of help to the community through code review (which might lead to a lot of help over time!) is the need for each person to develop their own tooling around an email-based workflow. What tools can we bring to bear to make "wading in" to the community more accessible (rather than being doused with a firehose).
6.11. Your topic here! (Your Name)
Add your own topics here.
7. Sprint Notes
General overview (drop the anti spam part): https://public.etherpad-mozilla.org/p/sprint-hg4.0-NOSPAMREMOVETHATLASTPAST
The table below is an attempt to gather written summary of discussions
Session theme |
notes/result |
People who know what happen |