Following ths instructions here for getting an app running off Rails Edge to test Rails 4: What is the best way to generate a Rails app using edge? and How to create Edge rails application?
But running into this error:
`require': cannot load such file -- thread_safe (LoadError)
Using the command:
rails new Edge --edge --skip-bundle --database=postgresql --skip-test-unit --skip-index-html
A checkout of Rails master bin dir is on my path.
I am using rbenv with ruby 1.9.3p327.
I have cleared all my installed gems out, just running bundler.
Rails 3.2.9 works fine on my system, have an app in active development.
Issue is not having the rails gems installed (when installing via rubygems, dependencies are automatically resolved.
See https://github.com/rails/rails/pull/8589
Need to go into the cloned rails dir and run "bundle install", which will pull in the necessary gems.
来源:https://stackoverflow.com/questions/14098983/error-with-rails-edge-4-require-cannot-load-such-file-thread-safe