ezeeyahoo/CommonHacks.md

## CommonHacks.md

      
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              CommonHacks.md
            
          
    Do's and Don'ts

How to select a project to work on?


Activity on a given project can be observed by looking at when the last commit was made.
In case issues and pull requests are pending from long time, better skip that project as likelihood of being accepted is dismal. It is recommended to focus on hot cakes.


Project founder/contributer marked my post as spam

Ask yourself before making submissions:-


My changes before commit are properly commented
Am I making right commentary about the change and politely requesting for a review?
Is my commit message going into PR rightly describe about the change I made?

Ex. Refrain from creating such PR sindresorhus/array-union#8


Dangerous

Block this links in your browser. DO NOT work on repository owned by these developers.


https://github.com/sindresorhus
https://github.com/webpack
https://github.com/christophgysin

Guides

I am behind the main repository. How can I create PR now?


I was working on a change on my forked repository but before I can submit my change, main repository merged some changes from elsewhere and now I am not in sync or branch head is running some commits behind the main repository.

It is a common issue generally occur when developers choose to follow develop and release side by side model.

# show branches
$ git branch -v

# show remote sources
$ git remote -v

# add a new source stream
$ git remote add <name ex. upstream> <repository link ex. main repository link>

# check again
$git remote -v
 
# pull code from main repository
$ git pull <source name ex. upstream> <branch name generally same as current working branch>

# if changes are already commited, check logs
$ git log
# Here our commit must be on top.

# push changes
# git push <source name> <branch name>
ex.
$ git push origin master

# Now you can raise PR from web ui


Run for pypy version is failing


No problem, pypy versions are not available for LoP yet. Skip pypy version(s) or write it under exclude: of matrix/job.

Python job failed with error The archive may not exist. 

Failure Message

Downloading archive: https://storage.googleapis.com/travis-ci-language-archives/python/binaries/ubuntu/20.04/ppc64le/python-3.7.tar.bz2
0.10s$ curl -sSf --retry 5 -o python-3.7.tar.bz2 ${archive_url}
curl: (22) The requested URL returned error: 404 
Unable to download 3.7 archive. The archive may not exist. Please consider a different version.

Resolution


Exclude the failing job

# Disable version 3.3, 3.2 & pypy on ppc64le
jobs: 
  exclude:
    - arch: ppc64le
      python: 3.3
    - arch: ppc64le
      python: 3.2
    - arch: ppc64le
      python: pypy2

Python versions available on ppc64le


Python
xenial
bionic
focal


2.7
yes
yes
yes


3.0
no
no
no


3.1
no
no
no


3.2
no
no
no


3.3
no
no
no


3.4
yes
no
no


3.5
yes
yes
yes


3.6
yes
yes
yes


3.7
yes
yes
yes


3.8
yes
yes
yes


3.9
yes
yes
yes


nightly
yes
yes
yes


pypy2
no
no
no


pypy3
no
no
no


For more info:  https://docs.travis-ci.com/user/languages/python/
Go versions on travis


Go
amd64
ppc64le


xenial
1.2.x and above
1.5.x and above


bionic
1.2.x and above
1.6.x and above


focal
1.2.x and above
1.6.x and above


Docs: https://docs.travis-ci.com/user/languages/go/
NodeJS Versions on Travis

nvm is used to install nodejs at runtime.


Nodejs
amd64
ppc64le


0.6 to 0.12
yes
no


4 to 15
yes
yes


lts/*
yes
yes


node
yes
yes


Note

lts/*:  latest LTS Node.js release
node: latest stable Node.js release
Docs

https://docs.travis-ci.com/user/languages/javascript-with-nodejs/
https://docs.travis-ci.com/user/reference/xenial/#javascript-and-nodejs-support
Ruby versions on Travis

rvm is used to install ruby at runtime.
Xenial


Ruby
amd64
ppc64le


1.7
yes
yes


1.9 to 2.7
yes
yes


jruby
yes
yes


truffleruby
yes
no


Bionic & Focal


Ruby
amd64
ppc64le


1.7
yes
yes


1.9 to 2.3
no
no


2.4
yes
no


2.5
yes
no


2.6
yes
yes


2.7
yes
yes


jruby
yes
yes


truffleruby
yes
no


Ref

https://docs.travis-ci.com/user/languages/ruby/
https://www.ruby-lang.org/en/downloads/releases/
https://github.com/oracle/truffleruby/releases
https://travis-ci.com/github/Siddhesh-Ghadi/travis-ruby-version/builds

PHP Versions on Travis

phpenv is used to manage/install php versions at runtime.
Xenial


PHP
amd64
ppc64le


5.6
yes
yes


7.0 to 7.4
yes
yes


8.0
yes
yes


nightly
yes
yes


Bionic


PHP
amd64
ppc64le


7.1
yes
yes


7.2
yes
yes


7.3
yes
no


7.4
yes
yes


8.0
yes
yes


nightly
yes
yes


Focal


PHP
amd64
ppc64le


7.4
yes
yes


8.0
yes
yes


nightly
yes
yes


Ref


https://docs.travis-ci.com/user/languages/php/
https://en.wikipedia.org/wiki/PHP
https://travis-ci.com/github/Siddhesh-Ghadi/travis-php-versions


How to setup DISPLAY for GUI tests in travis?

addons:
  apt:
    packages:
      - xvfb
install:
  - export DISPLAY=':99.0'
  - Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
Python	xenial	bionic	focal
2.7	yes	yes	yes
3.0	no	no	no
3.1	no	no	no
3.2	no	no	no
3.3	no	no	no
3.4	yes	no	no
3.5	yes	yes	yes
3.6	yes	yes	yes
3.7	yes	yes	yes
3.8	yes	yes	yes
3.9	yes	yes	yes
nightly	yes	yes	yes
pypy2	no	no	no
pypy3	no	no	no
Go	amd64	ppc64le
xenial	1.2.x and above	1.5.x and above
bionic	1.2.x and above	1.6.x and above
focal	1.2.x and above	1.6.x and above
Ruby	amd64	ppc64le
1.7	yes	yes
1.9 to 2.3	no	no
2.4	yes	no
2.5	yes	no
2.6	yes	yes
2.7	yes	yes
jruby	yes	yes
truffleruby	yes	no