Always Be Bundling

Terence Lee @hone02

Austin, TX

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Blue Hat Club

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Ruby Task Force

Agenda ● What is Gem? ● Intermission ● Bundler ● Community

What is a Gem?

gem install $ gem install rack Fetching: rack-1.5.2.gem (100%) Successfully installed rack- 1.5.2 1 gem installed

Directory Layout

gem fetch $ gem fetch rack Fetching: rack-1.5.2.gem (100%) Downloaded rack-1.5.2 $ ls rack-1.5.2.gem

gem unpack $ gem unpack rack-1.5.2.gem Unpacked gem: '/tmp/rack-1.5.2' $ ls rack-1.5.2

$ tree ├── bin │ └── rackup ├── lib │ ├── rack │ │ ├── server.rb │ └── rack.rb ├── rack.gemspec ├── Rakefile ├── README.rdoc └── test ├── spec_lobster.rb

LOAD_PATH $ ruby -e "require 'pp';pp '$LOAD_PATH'" ["/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0 /x86_64-linux", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby/2.1.0 /x86_64-linux", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/x86_64-linux"]

require require 'rack' ├── lib │ └── rack.rb require 'rack/auth/abstract/handler' ├── lib │ └── rack.rb │ │ ├── auth │ │ │ ├── abstract │ │ │ │ ├── handler.rb

Dependencies rspec ● rspec-core ~> 3.0.0 ● rspec-expectations ~> 3.0.0 ● rspec-mocks ~> 3.0.0

Operators

= "= 3.0.0": 3.0.0

> "> 3.0.0": 3.0.1, 3.1.0, 4.0

>= ">= 3.0.0": 3.0.0, > 3.0.0

<, <= "< 3.0.0": 2.9.0, 1.0.0 "<= 3.0.0"

~> (eat chunky bacon operator) ~> 3.0.0: >= 3.0.0, < 3.1.0 ~> 3.0.1: >= 3.0.1, < 3.1.0 ~> 3.1: >= 3.1.0, < 4.0.0 ~> 3: >= 3.0.0, < 4.0.0

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Creating a Gem

bundle gem $ bundle gem new_gem create new_gem/Gemfile create new_gem/Rakefile create new_gem/LICENSE.txt create new_gem/README.md create new_gem/.gitignore create new_gem/new_gem.gemspec create new_gem/lib/new_gem.rb create new_gem/lib/new_gem/version.rb Initializing git repo in /tmp/new_gem

Rake Tasks $ cat Rakefile require "bundler/gem_tasks" $ rake -T rake build # Build new_gem-0.0.1.gem into the pkg directory rake install # Build and install new_gem-0.0.1. gem into system gems rake release # Create tag v0.0.1 and build and push new_gem-0.0.1.gem to Rubygems

rake build $ rake build new_gem 0.0.1 built to pkg/new_gem-0.0.1.gem. $ gem install pkg/new_gem-0.0.1.gem Successfully installed new_gem-0.0.1 1 gem installed

rake install $ rake install new_gem 0.0.1 built to pkg/new_gem- 0.0.1.gem. new_gem (0.0.1) installed.

rake release Let me introduce you to Jeff. Thanks!

Intermission

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bundle init $ bundle init Writing new Gemfile to /tmp/foobar/Gemfile $ cat Gemfile # A sample Gemfile source "https://rubygems.org" # gem "rails"

Gemfile source "https://rubygems.org" gem "rack", "1.4.0" gem "sinatra", github: "sinatra/sinatra" group :development, :test do gem "rspec" end

Gemfile source "https://rubygems.org" gem "rack", "1.4.0" gem "sinatra", github: "sinatra/sinatra" group :development, :test do gem "rspec" end

Gemfile source "https://rubygems.org" gem "rack", "1.4.0" gem "sinatra", github: "sinatra/sinatra" group :development, :test do gem "rspec" end

Gemfile source "https://rubygems.org" gem "rack", "1.4.0" gem "sinatra", github: "sinatra/sinatra" group :development, :test do gem "rspec" end

bundle install $ bundle install --path vendor/bundle Fetching git://github.com/sinatra/sinatra.git Fetching gem metadata from https://rubygems.org/......... Fetching additional metadata from https://rubygems.org/.. Resolving dependencies... Installing rspec-support 3.0.2 Installing diff-lcs 1.2.5 Using bundler 1.6.3 Installing tilt 1.4.1 Installing rspec-mocks 3.0.2 ... Installing rspec 3.0.0 Installing rack 1.4.0 (was 1.5.2) Installing rack-protection 1.5.3 Using sinatra 1.4.5 from git://github.com/sinatra/sinatra.git (at master) Your bundle is complete!

bundle update source "https://rubygems.org" gem "rack", "1.5.2" gem "sinatra", github: "sinatra/sinatra" group :development, :test do gem "rspec" end

bundle update $ bundle install Fetching gem metadata from https://rubygems. org/......... Fetching additional metadata from https: //rubygems.org/.. Resolving dependencies... You have requested: rack = 1.5.2 The bundle currently has rack locked at 1.4.0. Try running `bundle update rack`

bundle update $ bundle update rack Fetching gem metadata from https://rubygems.org/......... Fetching additional metadata from https://rubygems.org/.. Resolving dependencies... Using diff-lcs 1.2.5 Using rspec-support 3.0.2 Using tilt 1.4.1 Using bundler 1.6.2 Using rspec-expectations 3.0.2 Using rspec-mocks 3.0.2 Using rspec-core 3.0.2 Using rspec 3.0.0 Installing rack 1.5.2 (was 1.4.0) Using rack-protection 1.5.3 Using sinatra 1.4.5 from git://github.com/sinatra/sinatra.git (at master) Your bundle is updated!

Why do we need this?

Dark Old Days config.gem "paperclip", "1.0.0" config.gem "rspec", "1.2.4" config.gem "cucumber", "0.9.8"

Gemfile.lock GIT remote: git://github.com/sinatra/sinatra.git revision: 27302f1e2a204278ae1996829ba3c8c54a3af254 specs: sinatra (1.4.5) rack (~> 1.4) rack-protection (~> 1.4) tilt (~> 1.3, >= 1.3.4)

GEM remote: https://rubygems.org/ specs: diff-lcs (1.2.5) rack (1.5.2) rack-protection (1.5.3) rack rspec (3.0.0) rspec-core (~> 3.0.0) rspec-expectations (~> 3.0.0) rspec-mocks (~> 3.0.0) rspec-core (3.0.2) rspec-support (~> 3.0.0) rspec-expectations (3.0.2) diff-lcs (>= 1.2.0, < 2.0) rspec-support (~> 3.0.0) rspec-mocks (3.0.2) rspec-support (~> 3.0.0) rspec-support (3.0.2) tilt (1.4.1)

PLATFORMS ruby DEPENDENCIES rack (= 1.5.2) rspec sinatra!

Exact same versions of all third party code on every machine

require "bundler/setup" $ ruby -e "require 'pp';require 'bundler/setup';pp $:" ["/tmp/foo/vendor/bundle/ruby/2.1.0/gems/rack-1.5.2/lib", "/home/hone/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2 /lib/gems/bundler-1.6.2/lib", "/home/hone/.rvm/gems/ruby-2.1.2 @global/gems/bundler-1.6.2/lib", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0 /x86_64-linux", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby/2.1.0 /x86_64-linux", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/vendor_ruby", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0", "/home/hone/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/x86_64-linux"]

Community

“I almost feel like Ruby is one of my children, but in fact, it is the result of the combined efforts of many people. Without their help, Ruby could never have become what it is.” - Yukihiro Matsumoto, “Matz”, まつもとゆきひろ

Language has a grammar. But it also has a culture. It shapes the way we experience world.

“Speak a new language so that the world will be a new world.” - Rumi

← Matz

“I hope to see Ruby help every programmer in the world to be productive, and to enjoy programming, and to be happy. That is the primary purpose of Ruby language.” - Yukihiro Matsumoto, “Matz”, まつもとゆきひろ

← ko1

nobu → Patch Monster

Top 5 Committers $ git shortlog -s --since=2012 | sort -rn | \ head -6 2739 nobu <--- 867 akr 710 svn 635 ko1 596 naruse 448 zzak

@_zzak

@indirect

Friday Hug! @tenderlove

EuRuKo 2012 - Amsterdam

@gorbypuff

#rubykaraoke ← @headius @plexus →

Chunky Bacon Cartoon Foxes

Why Day August 19, 2009

Jim Weirich http://www.confreaks.com/videos/412- mountainrb2010-has-anyone-seen-my-code

Inspire. Create. Explore.

Thank You ありがとがざいます @hone02 terence@heroku.com