Here are customizations that won't be accepted by upstream.

• append ext instead of substitute for path_for_spec
• no-op ensure_matching_version
• force generating module map and umbrella header for all targets

Use:

Gemfile:

source 'https://rubygems.org'

gem 'cocoapods', git: 'https://github.com/shyang/CocoaPods.git', branch: '1-9-stable'

$ bundle install

$ bundle exec pod init ...