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How can Bundler/Gemfile be configured to use different gem sources during development?

Asked 2011-09-07T17:07:26.010
14

I have a Sinatra application that requires another gem I'm developing locally. I'm having trouble configuring Bundler to use my local gem code during development but my vendored gem code in production.

Ideally I could do something like this, but Bundler doesn't allow you to specify the same gem twice:

# Doesn't work:
group :development do
  gem 'awesome', :path => "~/code/awesome"
end

group :production do
  gem 'awesome', :path => "vendor/gems/awesome-0.0.1"
end

In the meantime I've resorted to manually vendoring the gem & updating the gem source in the Gemfile every single time I deploy, which is quite a hassle. My workflow is this:

  1. Point to my local gem during development (gem 'awesome', :path => "~/code/awesome")
  2. When ready to deploy, unpack gem into vendor/gems
  3. Update Gemfile to point to vendored gem (gem 'awesome', :path => "vendor/gems/awesome-0.0.1")
  4. Run bundle install (to update Gemfile.lock)
  5. Deploy code
  6. Return to step 1.

What a hassle! I'd like to do something cleaner than simply writing Rake tasks to automate my current setup.

What's the best workflow for this scenario?

ruby rubygems bundler gemfile
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1 Answer

-5

Here is a suggestion which I didn't get to fully work (used for a spree theme and I got problems with some stylesheets from the theme):

group :production do
      gem 'gemname', '~> 0.1.6', :git => 'git://github.com/foouser/gemname.git'
end

group :development do
      gem 'gemnamedev', :path => '~/path/gemname' # use local version
end

Duplicate your gemname.gemspec file and call it gemnamedev.gemspec, and change s.name inside it to "gemnamedev".

answered 2012-07-12T16:05:17.937

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