Infer dependencies from the gemspec

Gemfile

@@ -1,15 +1,10 @@
 source 'http://rubygems.org'
 
-gem 'rails', '3.0.0'
-gem 'builder'
-gem 'devise'
+gemspec
 
 # Bundle gems for the local environment. Make sure to
 # put test-only gems in this group so their generators
 # and rake tasks are available in development mode:
 group :development, :test do
-  gem 'dummy_data'
-  gem 'rspec-rails', '>= 2.0.0.beta.20'
-  gem 'sqlite3-ruby', :require => 'sqlite3'
   gem 'webrat', :git => 'git://github.com/kalv/webrat.git'
 end

Gemfile.lock

@@ -7,6 +7,14 @@ GIT
       rack (>= 1.0)
       rack-test (>= 0.5.3)
 
+PATH
+  remote: .
+  specs:
+    rails_admin (0.0.1)
+      builder (~> 2.1.0)
+      devise (~> 1.1.0)
+      rails (~> 3.0.0)
+
 GEM
   remote: http://rubygems.org/
   specs:
@@ -102,10 +110,11 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  builder
-  devise
-  dummy_data
-  rails (= 3.0.0)
-  rspec-rails (>= 2.0.0.beta.20)
-  sqlite3-ruby
+  builder (~> 2.1.0)
+  devise (~> 1.1.0)
+  dummy_data (~> 0.9)
+  rails (~> 3.0.0)
+  rails_admin!
+  rspec-rails (~> 2.0.0.beta.22)
+  sqlite3-ruby (~> 1.3)
   webrat!

rails_admin.gemspec

@@ -2,9 +2,9 @@
 require File.expand_path("../lib/rails_admin/version", __FILE__)
 
 Gem::Specification.new do |s|
-  s.add_development_dependency("dummy_data", [">= 0.9"])
-  s.add_development_dependency("rspec-rails", [">= 2.0.0.beta.20"])
-  s.add_development_dependency("sqlite3-ruby", [">= 1.3.1"])
+  s.add_development_dependency("dummy_data", ["~> 0.9"])
+  s.add_development_dependency("rspec-rails", ["~> 2.0.0.beta.22"])
+  s.add_development_dependency("sqlite3-ruby", ["~> 1.3"])
   s.add_runtime_dependency("builder", ["~> 2.1.0"])
   s.add_runtime_dependency("devise", ["~> 1.1.0"])
   s.add_runtime_dependency("rails", ["~> 3.0.0"])