Bypassing bundler for auxiliary development gems
In the Gemfile
of my Rails project, I am starting to have auxiliary gems like "ruby-debug19", "perftools.rb", or "irbtools". All of these really have nothing to do with the project, but rather are part of my local development setup. But since I'm using bundler, I cannot load these gems (even though they are installed system-wide) unless I add them to the Gemfile. In my view that is a bit of a code smell.
For example, I would like to be able to require 'irbtools'
in rails console
without addin开发者_运维问答g "irbtools" to my Gemfile.
Is there a way to keep auxiliary gems out of the Gemfile and still be able to load them for debugging, profiling, etc. when I need them?
Actually, you can create a group
in you Gemfile
like:
group :auxiliary do
gem 'irbtools'
end
And then use bundle install --without auxiliary
if you don't want to use irbtools
. Why do you think adding them to Gemfile
is a code smell? And if it possible to do this without adding gems to the Gemfile
it will be many more code smell I think.
Thanks to this post I have a great solution.
Add this line at the end of your Gemfile:
eval(File.read(File.dirname(__FILE__) + '/Gemfile.local'), binding) rescue nil
Create a file called Gemfile.local.
Add your development gems to Gemfile local. For example:
group :development do gem 'cucumber' end
- Add Gemfile.local to .gitignore.
Now you can add your auxiliary development gems without changing the Gemfile for other folks on the team. Very cool.
I put the code below in a file in my app root, so it's easy to load from irb
.
If you want it in something like a rails server, you probably need to add the load
statement to environments/development.rb
etc. That still creates problems if you accidentally check that in, but it's less annoying than having to add it to the Gemfile and causing your Gemfile.lock to change also.
# Example usage:
# add_more_gems("ruby-debug-base19-0.11.26", "linecache19-0.5.13")
# or
# add_more_gems(%w(ruby-debug-base19-0.11.26 linecache19-0.5.13))
#
# Note that you are responsible for:
# - adding all gem dependencies manually
# - making sure manually-added gem versions don't conflict with Gemfile.lock
# To list deps, run e.g. "gem dep ruby-debug-base19 -v 0.11.26"
#
def add_more_gems(*gem_names_and_vers)
gem_names_and_vers.flatten!
gem_base = File.expand_path(Gem.dir)
gem_names_and_vers.each do |gem_name_and_ver|
# uncomment if desired
###puts "Adding lib paths for #{gem_name_and_ver.inspect}"
spec_file = File.join(gem_base, 'specifications', "#{gem_name_and_ver}.gemspec")
spec = Gem::Specification.load spec_file
this_gem_dir = File.join(gem_base, 'gems', gem_name_and_ver)
spec.require_paths.each {|path|
dir_to_add = File.join(this_gem_dir, path)
$: << dir_to_add unless $:.member?(dir_to_add)
}
end
end
# put your often-used gems here
add_more_gems(
%w(
ruby-debug-base19-0.11.26
ruby-debug-ide19-0.4.12
linecache19-0.5.13
)
)
Not sure if this would work for you. It depends on whether or not you're using RVM. If you are, then you could install those auxiliary gems into the @global
gemset that is created automatically for every Ruby interpreter. The gems in the @global
gemset are available to all project-specific gemsets by default. This way you won't need to clutter up your Gemfiles.
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