Understanding the Pharo Dev Process

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ESUG

Youtube: https://youtu.be/tp-YnkZWnNw ESUG 2017 Name: Guillermo Polito

Software

Undestanding the
Pharo dev Process
Guille Polito, CNRS & Inria
@guillepolito

2
Open
Issue
Submit
Code
Validate 
Code
Integrate
+
Build
Close
Issue

Pharo Repository
6
master
development
• master branch will point to latest stable release
• development branch with current development
V6.0
V6.1

Proposing a Change
7
’s Machine
Push
Fork
Pull Request
Commit
Clone
+ +

Proposing a Change?
• Do not commit a change to development
• Instead create a new branch named after the
issue: 
 
e.g., 10271-Remove-Old-Compiler
• Issue the pull request  
new branch —> development
8

Maintaining your repo
9
’s Machine
Push
Pull
+ +

Multiple Images
10
’s Machine
+
HEAD=12b96fd7
HEAD=12b96fd7
Load, commit
HEAD=40121187HEAD=12b96fd7

A Git-centric process
Pull Request 
Change
n+1
Build
12
Validate

• Jenkinsﬁle
• travis.yml like ﬁle
• describe the build process
The Build Process
13

1. Bootstrap 
 
 
 
 
 
 
 
14
Build Dissected
10%

1. Bootstrap
2. Compiler 
 
 
 
 
 
15
Build Dissected
Binary 
Hermes
12%

1. Bootstrap
2. Compiler
3. Monticello 
 
 
 
16
Build Dissected
Chunk ﬁles
14%

1. Bootstrap
2. Compiler
3. Monticello
4. Metacello 
 
17
Build Dissected
Monticello
19%

1. Bootstrap
2. Compiler
3. Monticello
4. Metacello
5. Dev-Environment
18
Build Dissected
Metacello 
Baselines
100%

• Ensure initial state!
• Allow complex changes that before required
staging
• e.g., changes in key-object layouts (Slots)
• e.g., changes in “in-use” objects (Compiler,
Monticello)
Building from sources
19

1. Bootstrap
2. Compiler
3. Monticello
4. Metacello
5. Dev-Environment
20
Build Dissected
Metacello 
Baselines
100%

1. Bootstrap
2. Compiler
3. Monticello
4. Metacello
5. Dev-Environment
22
Build Dissected
Metacello 
Baselines
100%

• Build once, validate many times
• All tests * #(win,unix,mac)
• Staged tests (sunit only so far) * #(win,unix,mac)
• Future: Lint Rules? others?
Validations
23

What happens when
an issue is integrated?
24

A Git-centric process
Change
n+1
Build
25

Managing External Projects
34
Pull / Push
Fork
Pull Request

Further Work
• Issue tracker integration
• Notiﬁcations
• Evaluate using Github issue tracker
• Expect modularisations and changes
35

Conclusion
Push
n+1
Build
36
’s Machine
Push
Pull
+ +
Tx Christophe, Pavel, and all the Pharo community

• Travis
• OSX is slow
• For windows we would need appveyor…
• Less freedom to design our process
• Jenkins: we have full control (and responsibility) on it
37

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Understanding the Pharo Dev Process

1. Undestanding the Pharo dev Process Guille Polito, CNRS & Inria @guillepolito

2. 2 Open Issue Submit Code Validate  Code Integrate + Build Close Issue

3. Pharo < 7 n+1 Change n 3

4. :the new kid on the block 4

5. Pharo 7? n n+1 Change ? 5

6. Pharo Repository 6 master development • master branch will point to latest stable release • development branch with current development V6.0 V6.1

7. Proposing a Change 7 ’s Machine Push Fork Pull Request Commit Clone + +

8. Proposing a Change? • Do not commit a change to development • Instead create a new branch named after the issue:    e.g., 10271-Remove-Old-Compiler • Issue the pull request   new branch —> development 8

9. Maintaining your repo 9 ’s Machine Push Pull + +

10. Multiple Images 10 ’s Machine + HEAD=12b96fd7 HEAD=12b96fd7 Load, commit HEAD=40121187HEAD=12b96fd7

11. What happens when a ﬁx is proposed? 11

12. A Git-centric process Pull Request  Change n+1 Build 12 Validate

13. • Jenkinsﬁle • travis.yml like ﬁle • describe the build process The Build Process 13

14. 1. Bootstrap                14 Build Dissected 10%

15. 1. Bootstrap 2. Compiler            15 Build Dissected Binary  Hermes 12%

16. 1. Bootstrap 2. Compiler 3. Monticello        16 Build Dissected Chunk ﬁles 14%

17. 1. Bootstrap 2. Compiler 3. Monticello 4. Metacello    17 Build Dissected Monticello 19%

18. 1. Bootstrap 2. Compiler 3. Monticello 4. Metacello 5. Dev-Environment 18 Build Dissected Metacello  Baselines 100%

19. • Ensure initial state! • Allow complex changes that before required staging • e.g., changes in key-object layouts (Slots) • e.g., changes in “in-use” objects (Compiler, Monticello) Building from sources 19

20. 1. Bootstrap 2. Compiler 3. Monticello 4. Metacello 5. Dev-Environment 20 Build Dissected Metacello  Baselines 100%

21. Thou Shalt Update the 21 Baselines

22. 1. Bootstrap 2. Compiler 3. Monticello 4. Metacello 5. Dev-Environment 22 Build Dissected Metacello  Baselines 100%

23. • Build once, validate many times • All tests * #(win,unix,mac) • Staged tests (sunit only so far) * #(win,unix,mac) • Future: Lint Rules? others? Validations 23

24. What happens when an issue is integrated? 24

25. A Git-centric process Change n+1 Build 25

26. ﬁles.pharo.org/image/70 26

27. Tooling 27

28. Setting up Iceberg 28

29. The Pharo Plugin 29

30. The Github Plugin 30

31. Validating Issues 31

32. Integration 32

33. A glimpse from the future 33

34. Managing External Projects 34 Pull / Push Fork Pull Request

35. Further Work • Issue tracker integration • Notiﬁcations • Evaluate using Github issue tracker • Expect modularisations and changes 35

36. Conclusion Push n+1 Build 36 ’s Machine Push Pull + + Tx Christophe, Pavel, and all the Pharo community

37. • Travis • OSX is slow • For windows we would need appveyor… • Less freedom to design our process • Jenkins: we have full control (and responsibility) on it 37

Understanding the Pharo Dev Process

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