Hack your bundle for fun and profit (La Conf 2013)

Bundler has turned out to be a super-usful tool for installing and managing dependencies, but it has hidden depths! This talk discusses some of the ways you can use Bundler and other tools together to boost your development productivity. I’ll walk through how to use the lesser-known but very handy commands like bundle gem, bundle open, and a few others. I’ll show you how to use Bundler to make sure you always run your app on the right version of Ruby, how to search through every gem in your Gemfile with a single command, and how to check for newer versions of the gems you use.

Transcript

1. Hack your bundle
   for fun and profit
   

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2. André Arko
   @indirect
     
   

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5. bundle install
   

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6. probably what you want
   bundle install
   

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7. installs the Gemfile
   bundle install
   

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8. after edits or git pulls
   bundle install
   

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9. bundle update
   

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10. probably not
    what you want
    bundle update
    

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11. updates every gem
    bundle update
    

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12. this may be surprising
    bundle update
    

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13. much more useful
    bundle update
    

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14. updates GEM
    as Gemfile allows
    bundle update
    

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15. updates GEM
    along with child deps
    bundle update
    

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16. bundle show
    

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17. lists bundled gems
    bundle show
    

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18. prints the path to GEM
    bundle show
    

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19. opens GEM in $EDITOR
    bundle open
    

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20. lists paths to every
    bundled gem
    bundle show --paths
    

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21. sneakily useful
    bundle show --paths
    

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22. finds “foo” in any gem
    grep "foo" `bundle
    show --paths`
    

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23. Rails 4 sneak preview
    

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24. Rails 4 sneak preview
    (well… DHH does this)
    

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25. gives you a binary that
    you can run from cron
    bundle binstubs
    

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26. no more cd in cronjobs
    /myapp/bin/rake foo
    

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27. if your Ruby location
    is known, check it in
    /myapp/bin/rake foo
    

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28. creates a Gemfile for you
    bundle init
    

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29. bundle git locals
    

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30. bundle git locals
    use git checkouts
    directly
    

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31. bundle git locals
    changes apply
    instantly
    

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32. bundle git locals
    commits update
    lock file
    

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33. bundle config
    local.rack
    ~/sw/rack
    

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34. enforce ruby versions
    ruby "1.9.3"
    

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35. sets Heroku ruby version
    ruby "1.9.3"
    

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36. bundle won’t load
    on wrong versions
    ruby "1.9.3"
    

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37. literal dependency graph
    bundle viz
    

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39. load your gems,
    then open IRB
    bundle console
    

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40. create a new gem
    named NAME
    bundle gem NAME
    

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41. gemspec, directories,
    release tasks, all there
    bundle gem NAME
    

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42. tasks update when
    bundler updates
    bundle gem NAME
    

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43. go forth and bundle
    

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