ESUG 2017 Youtube: https://youtu.be/LxPhhQOVpU8

2. About me
• Pharo architect since 2012
• Owned a company to develop in
Pharo back in 2008
• Java senior architect for 7 years (and
15 years overall java experience)
• Web, microprocessors, etc., etc., etc.
• JavaScript, C++, ObjC, C#, Delphi,
ASM and lots of languages no longer
exist or have been long-time
forgotten
• 24 years (!) programming experience
(yes… I’m becoming old)

3. The Pharo
Fireman

4. What is iceberg
• A front-end to work with git using
- filetree
- libgit2
• Yes, it can be other things tomorrow, but now is that.

5. Big thanks to Nicolás Passerini
He started iceberg development sponsored by the Pharo
consortium, then I took over.

6. Iceberg goals
• Nicely move Pharo into git world
• Allow Pharo development itself on it
• To grow incrementally
- Starts with some few use-cases
- Add functionality as needed
- That’s why there are a lot of functionality missing
• Extensible

7. Why
• Monticello is showing age
• With time, the “package” metaphor became insufficient.
- We now use more complex “projects”
- Programs often have different kind of sources

8. Iceberg
Model
Iceberg
UI
Backend Monticello Metamodel

9. Fork
Local clone
Local
Workspace
Somewhere
else

10. GitHub plugin

11. Pharo plugin

12. Iceberg status
• Version 0.5 released and integrated into Pharo 6.1.
• Tested in several projects and working (some minor
problems on different platforms)
• It works for Pharo 7.0 development, so it should work for
you too.
• Hot-fixes and updates are being incorporated.
• Still some problems with Windows support, mainly
because of long paths.

13. Use-cases we have in mind

14. Solo

15. clone work commit push

20. Team on unique
repository

21. clone
branch commit push
pull
work Pull request

30. Distributed team

31. clone
branch commit push to fork
pull from
origin
work Pull request
FORK

38. Demo
(The Pharo process)

39. Pharo process in a nutshell
• Clone from pharo-project/pharo
• Create a branch with issue number (or feature name)
• Work on it as needed
• Push to your fork
• Submit a Pull Request to “development” branch

40. Ongoing work
• 0.5.* : Lot of work on optimisation and bug fixing
- Love to windows users (because performance issues
there)
- Win64 lacks iceberg support (and that’s one of the
reasons why there is not official version yet)
• 0.6 : Add Cypress format alternative: Tonel

41. What is Tonel?

42. Tonel bits
• File-per-class
- speeds up file IO
- reduces real space taken
• Easy to read
• better encoding of classes/methods using STON for definitions
and metadata
- Extensible
• Allows source exchange also between platforms

44. Future: 0.7
• Support for multiple directories (allow subtrees)
• Update to libgit2 0.26 (just to keep us up-to-date)
• …

45. Thanks!