Remove the need for a Gemfile.local

* Use the latest activesupport gem instead of git
* Use the rspec-1.3.1 gem instead of my fork
* Use jeweler ~> 1.4.0 to prevent 1.5.1 for now
* Use github http clone URLs

Gemfile

@@ -1,71 +1,41 @@
-# If you're working on more than one datamapper gem at a time, then it's
-# recommended to create a local Gemfile and use this instead of the git
-# sources. This will make sure that you are  developing against your
-# other local datamapper sources that you currently work on. Gemfile.local
-# will behave identically to the standard Gemfile apart from the fact that
-# it fetches the gems from local paths. This means that you can use the
-# same environment variables, like ADAPTER when running bundle commands.
-# Gemfile.local is added to .gitignore, so you don't need to worry about
-# accidentally checking local development paths into git.
-#
-#   bundle exec rake local_gemfile
-#
-# will give you a Gemfile.local file that points to your local clones of
-# the various datamapper gems. It's assumed that all datamapper repo clones
-# reside in the same directory. You can use the Gemfile.local like so for
-# running any bundle command:
-#
-#   BUNDLE_GEMFILE=Gemfile.local bundle foo
-#
-# To speed up running bundle tasks, it's recommended to run
-#
-#   bundle lock
-#
-# after running 'bundle install' for the first time. This will make 'bundle exec' run
-# a lot faster compared to the unlocked version. With an unlocked bundle you would
-# typically just run 'bundle install' from time to time to fetch the latest sources from
-# upstream. When you locked your bundle, you need to run
-#
-#   bundle install --relock
-#
-# to make sure to fetch the latest updates and then lock the bundle again. Gemfile.lock
-# is added to the .gitignore file, so you don't need to worry about accidentally checking
-# it into version control.
+require 'pathname'
 
 source 'http://rubygems.org'
 
-DATAMAPPER = 'git://github.com/datamapper'
-DM_VERSION = '~> 1.0.2'
+SOURCE       = ENV['SOURCE']   ? ENV['SOURCE'].to_sym              : :git
+REPO_POSTFIX = SOURCE == :path ? ''                                : '.git'
+DATAMAPPER   = SOURCE == :path ? Pathname(__FILE__).dirname.parent : 'http://github.com/datamapper'
+DM_VERSION   = '~> 1.0.2'
 
 group :runtime do # Runtime dependencies (as in the gemspec)
 
-  gem 'dm-core',         DM_VERSION, :git => "#{DATAMAPPER}/dm-core.git"
+  gem 'dm-core',         DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-core#{REPO_POSTFIX}"
 
 end
 
 group(:development) do # Development dependencies (as in the gemspec)
 
-  gem 'dm-migrations',   DM_VERSION, :git => "#{DATAMAPPER}/dm-migrations.git"
+  gem 'dm-migrations',   DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-migrations#{REPO_POSTFIX}"
 
   gem 'rake',            '~> 0.8.7'
-  gem 'rspec',           '~> 1.3', :git => 'git://github.com/snusnu/rspec', :branch => 'heckle_fix_plus_gemfile'
-  gem 'jeweler',         '~> 1.4'
+  gem 'rspec',           '~> 1.3.1'
+  gem 'jeweler',         '~> 1.4.0'
 
 end
 
 group :datamapper do # We need this because we want to pin these dependencies to their git master sources
 
   if ENV['EXTLIB']
-    gem 'extlib',        '~> 0.9.15', :git => "#{DATAMAPPER}/extlib.git", :require => nil
+    gem 'extlib',        '~> 0.9.15', SOURCE => "#{DATAMAPPER}/extlib#{REPO_POSTFIX}", :require => nil
   else
-    gem 'activesupport', '~> 3.0.0',  :git => 'git://github.com/rails/rails.git', :branch => '3-0-stable', :require => nil
+    gem 'activesupport', '~> 3.0.3', :require => nil
   end
 
   plugins = ENV['PLUGINS'] || ENV['PLUGIN']
   plugins = plugins.to_s.tr(',', ' ').split.push('dm-migrations').uniq
 
   plugins.each do |plugin|
-    gem plugin, DM_VERSION, :git => "#{DATAMAPPER}/#{plugin}.git"
+    gem plugin, DM_VERSION, SOURCE => "#{DATAMAPPER}/#{plugin}#{REPO_POSTFIX}"
   end
 
 end