Requirejs-rails preventing upgrade to rails 4 - ruby-on-rails

Question

Trying to update the project to RoR-v4.0.0.rc2 in prep for new release next week, and I am a bit confused about how to fix the dependency issue. If I use bundle update, I get the following error:
Resolving dependencies...
Bundler could not find compatible versions for gem "railties":
In Gemfile:
requirejs-rails (>= 0) ruby depends on
railties (~> 3.1.1) ruby
rails (= 4.0.0.rc2) ruby depends on
railties (4.0.0.rc2)
Bundler could not find compatible versions for gem "rails":
In Gemfile:
requirejs-rails (>= 0) ruby depends on
rails (~> 3.1.1) ruby
rails (4.0.0.rc2)
But if I use just bundle, I get the following :
Resolving dependencies...
Bundler could not find compatible versions for gem "activesupport":
In snapshot (Gemfile.lock):
activesupport (3.2.2)
In Gemfile:
rails (= 4.0.0.rc2) ruby depends on
activesupport (= 4.0.0.rc2) ruby
Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
Supposedly, requirejs-rail has been updated for Rails 4 Beta here. Still unsure of what dependency is causing the issue, and which version to force the gem to.
Gemfile:
source 'https://rubygems.org'
gem 'rails', '4.0.0.rc2'
group :development, :test do
gem 'railroady'
gem 'sqlite3'
# For linux support
gem 'therubyracer'
end
group :production do
gem 'pg'
gem 'thin'
end
gem 'sass-rails', '~> 4.0.0.rc1'
gem 'coffee-rails', '~> 4.0.0'
gem 'uglifier', '>= 1.0.3'
gem 'colorize'
gem 'jquery-ui-rails'
gem 'jquery-rails'
gem 'rails-backbone'
gem 'bootstrap-sass', '~> 2.3.0.0'
gem 'requirejs-rails'
gem 'ejs'
gem 'devise'
gem 'better_errors', '>= 0.2.0', :group => :development
gem 'binding_of_caller', '>= 0.6.8', :group => :development
gem 'd3_rails'
# for a better way of looking at the rake routes by calling rake color_routes in the console
gem 'color_routes'
# lets us know which user is logged in, and store in a gloabel variable gon{}
gem 'gon'
#browser detection
gem 'browser'
# FOR EASY TRANISTION TO Rails 4
gem 'protected_attributes'
gem 'rails-observers'
gem 'actionpack-page_caching'
gem 'actionpack-action_caching'
Gemfile.lock:
GEM
remote: https://rubygems.org/
specs:
actionmailer (3.2.2)
actionpack (= 3.2.2)
mail (~> 2.4.0)
actionpack (3.2.2)
activemodel (= 3.2.2)
activesupport (= 3.2.2)
builder (~> 3.0.0)
erubis (~> 2.7.0)
journey (~> 1.0.1)
rack (~> 1.4.0)
rack-cache (~> 1.1)
rack-test (~> 0.6.1)
sprockets (~> 2.1.2)
activemodel (3.2.2)
activesupport (= 3.2.2)
builder (~> 3.0.0)
activerecord (3.2.2)
activemodel (= 3.2.2)
activesupport (= 3.2.2)
arel (~> 3.0.2)
tzinfo (~> 0.3.29)
activeresource (3.2.2)
activemodel (= 3.2.2)
activesupport (= 3.2.2)
activesupport (3.2.2)
i18n (~> 0.6)
multi_json (~> 1.0)
arel (3.0.2)
bcrypt-ruby (3.0.1)
binding_of_caller (0.7.1)
debug_inspector (>= 0.0.1)
bootstrap-sass (2.3.0.1)
sass (~> 3.2)
browser (0.1.6)
builder (3.0.4)
coffee-rails (3.2.2)
coffee-script (>= 2.2.0)
railties (~> 3.2.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.6.2)
color_routes (1.0.0)
colorize (0.5.8)
d3_rails (3.1.6)
railties (>= 3.1.0)
daemons (1.1.9)
debug_inspector (0.0.2)
devise (2.2.4)
bcrypt-ruby (~> 3.0)
orm_adapter (~> 0.1)
railties (~> 3.1)
warden (~> 1.2.1)
ejs (1.1.1)
erubis (2.7.0)
eventmachine (1.0.3)
execjs (1.4.0)
multi_json (~> 1.0)
gon (4.1.0)
actionpack (>= 2.3.0)
json
hike (1.2.2)
i18n (0.6.4)
journey (1.0.4)
jquery-rails (2.1.4)
railties (>= 3.0, < 5.0)
thor (>= 0.14, < 2.0)
jquery-ui-rails (4.0.3)
jquery-rails
railties (>= 3.1.0)
json (1.8.0)
libv8 (3.11.8.17)
mail (2.4.4)
i18n (>= 0.4.0)
mime-types (~> 1.16)
treetop (~> 1.4.8)
mime-types (1.23)
multi_json (1.7.3)
orm_adapter (0.4.0)
pg (0.15.1)
polyglot (0.3.3)
rack (1.4.5)
rack-cache (1.2)
rack (>= 0.4)
rack-ssl (1.3.3)
rack
rack-test (0.6.2)
rack (>= 1.0)
railroady (1.1.0)
rails (3.2.2)
actionmailer (= 3.2.2)
actionpack (= 3.2.2)
activerecord (= 3.2.2)
activeresource (= 3.2.2)
activesupport (= 3.2.2)
bundler (~> 1.0)
railties (= 3.2.2)
rails-backbone (0.9.10)
coffee-script (~> 2.2.0)
ejs (~> 1.1.1)
jquery-rails (~> 2.1.3)
railties (>= 3.1.0)
railties (3.2.2)
actionpack (= 3.2.2)
activesupport (= 3.2.2)
rack-ssl (~> 1.3.2)
rake (>= 0.8.7)
rdoc (~> 3.4)
thor (~> 0.14.6)
rake (10.0.4)
rdoc (3.12.2)
json (~> 1.4)
ref (1.0.5)
requirejs-rails (0.9.1)
railties (>= 3.1.1, < 3.3)
sass (3.2.9)
sass-rails (3.2.6)
railties (~> 3.2.0)
sass (>= 3.1.10)
tilt (~> 1.3)
sprockets (2.1.3)
hike (~> 1.2)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sqlite3 (1.3.7)
therubyracer (0.11.4)
libv8 (~> 3.11.8.12)
ref
thin (1.5.1)
daemons (>= 1.0.9)
eventmachine (>= 0.12.6)
rack (>= 1.0.0)
thor (0.14.6)
tilt (1.4.1)
treetop (1.4.12)
polyglot
polyglot (>= 0.3.1)
tzinfo (0.3.37)
uglifier (2.1.1)
execjs (>= 0.3.0)
multi_json (~> 1.0, >= 1.0.2)
warden (1.2.1)
rack (>= 1.0)
PLATFORMS
ruby
DEPENDENCIES
binding_of_caller (>= 0.6.8)
bootstrap-sass (~> 2.3.0.0)
browser
coffee-rails (~> 3.2.1)
color_routes
colorize
d3_rails
devise
ejs
gon
jquery-rails
jquery-ui-rails
pg
railroady
rails (= 3.2.2)
rails-backbone
requirejs-rails
sass-rails (~> 3.2.3)
sqlite3
therubyracer
thin
uglifier (>= 1.0.3)

Answer 1

The problem is with requirejs-rails gem. You probably should refer to master branch on github in your Gemfile
gem 'requirejs-rails', git: 'git://github.com/jwhitley/requirejs-rails.git'

Answer 2

#Michael Szyndel That branch is not completely rails 4 compatible.
The rake task will fail with an error about 'ruby_rake_task'. Also, the asset pre-compilation is broken. There are rails 4 patches out their but they have yet to be included into master.
This fork has included the rails 4 patches, try that one out.
https://github.com/scalient/requirejs-rails