Top Level Namespace

Includes:
Rake::DSL

Defined Under Namespace

Modules: Bundler, Gem

Instance Method Summary collapse

Instance Method Details

#gemfile(install = false, options = {}, &gemfile) ⇒ Object

Note:

Every gem that is specified in this ‘Gemfile’ will be ‘require`d, as if the user had manually called `Bundler.require`. To avoid a requested gem being automatically required, add the `:require => false` option to the `gem` dependency declaration.

Allows for declaring a Gemfile inline in a ruby script, optionally installing any gems that aren’t already installed on the user’s system.

Examples:

Using an inline Gemfile


#!/usr/bin/env ruby

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'json', require: false
  gem 'nap', require: 'rest'
  gem 'cocoapods', '~> 0.34.1'
end

puts Pod::VERSION # => "0.34.4"

Parameters:

  • install (Boolean) (defaults to: false) —

    whether gems that aren’t already installed on the user’s system should be installed. Defaults to ‘false`.

  • gemfile (Proc) —

    a block that is evaluated as a ‘Gemfile`.

Raises:

  • (ArgumentError) 


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# File 'lib/bundler/inline.rb', line 32

def gemfile(install = false, options = {}, &gemfile)
  require_relative "../bundler"
  Bundler.reset!

  opts = options.dup
  ui = opts.delete(:ui) { Bundler::UI::Shell.new }
  ui.level = "silent" if opts.delete(:quiet) || !install
  Bundler.ui = ui
  raise ArgumentError, "Unknown options: #{opts.keys.join(", ")}" unless opts.empty?

  old_gemfile = ENV["BUNDLE_GEMFILE"]

  Bundler.unbundle_env!

  begin
    Bundler.instance_variable_set(:@bundle_path, Pathname.new(Gem.dir))
    Bundler::SharedHelpers.set_env "BUNDLE_GEMFILE", "Gemfile"

    Bundler::Plugin.gemfile_install(&gemfile) if Bundler.feature_flag.plugins?
    builder = Bundler::Dsl.new
    builder.instance_eval(&gemfile)

    Bundler.settings.temporary(deployment: false, frozen: false) do
      definition = builder.to_definition(nil, true)
      definition.validate_runtime!

      if install || definition.missing_specs?
        Bundler.settings.temporary(inline: true, no_install: false) do
          installer = Bundler::Installer.install(Bundler.root, definition, system: true)
          installer.post_install_messages.each do |name, message|
            Bundler.ui.info "Post-install message from #{name}:\n#{message}"
          end
        end
      end

      begin
        runtime = Bundler::Runtime.new(nil, definition).setup
      rescue Gem::LoadError => e
        name = e.name
        version = e.requirement.requirements.first[1]
        activated_version = Gem.loaded_specs[name].version

        Bundler.ui.info \
          "The #{name} gem was resolved to #{version}, but #{activated_version} was activated by Bundler while installing it, causing a conflict. " \
          "Bundler will now retry resolving with #{activated_version} instead."

        builder.dependencies.delete_if {|d| d.name == name }
        builder.instance_eval { gem name, activated_version }
        definition = builder.to_definition(nil, true)

        retry
      end

      runtime.require
    end
  ensure
    if old_gemfile
      ENV["BUNDLE_GEMFILE"] = old_gemfile
    else
      ENV["BUNDLE_GEMFILE"] = ""
    end
  end
end