Bump DM dependency to 1.1.0.

Gemfile

@@ -3,22 +3,23 @@ source 'http://rubygems.org'
 SOURCE         = ENV.fetch('SOURCE', :git).to_sym
 REPO_POSTFIX   = SOURCE == :path ? ''                                : '.git'
 DATAMAPPER     = SOURCE == :path ? Pathname(__FILE__).dirname.parent : 'http://github.com/datamapper'
-DM_VERSION     = '~> 1.0.0'
+DM_VERSION     = '>= 1.1.0.rc0'
+DM_UVERSION    = '< 1.2'
 DO_VERSION     = '~> 0.10.3'
 DM_DO_ADAPTERS = %w[ sqlite postgres mysql oracle sqlserver ]
 
-gem 'dm-core', DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-core#{REPO_POSTFIX}"
+gem 'dm-core', DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/dm-core#{REPO_POSTFIX}"
 
 group :development do
 
-  gem 'dm-validations',  DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-validations#{REPO_POSTFIX}"
-  gem 'dm-constraints',  DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-constraints#{REPO_POSTFIX}"
+  gem 'dm-validations',  DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/dm-validations#{REPO_POSTFIX}"
+  gem 'dm-constraints',  DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/dm-constraints#{REPO_POSTFIX}"
 
   gem 'rake',            '~> 0.8.7'
   gem 'rspec',           '~> 1.3'
   gem 'yard',            '~> 0.5'
   gem 'rcov',            '~> 0.9.7'
-  gem 'jeweler',         '~> 1.4'
+  gem 'jeweler',         '~> 1.5.2'
 
 end
 
@@ -48,18 +49,18 @@ group :datamapper do
       gem "do_#{adapter}", DO_VERSION, do_options.dup
     end
 
-    gem 'dm-do-adapter', DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-do-adapter#{REPO_POSTFIX}"
+    gem 'dm-do-adapter', DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/dm-do-adapter#{REPO_POSTFIX}"
   end
 
   adapters.each do |adapter|
-    gem "dm-#{adapter}-adapter", DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-#{adapter}-adapter#{REPO_POSTFIX}"
+    gem "dm-#{adapter}-adapter", DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/dm-#{adapter}-adapter#{REPO_POSTFIX}"
   end
 
   plugins = ENV['PLUGINS'] || ENV['PLUGIN']
   plugins = plugins.to_s.tr(',', ' ').split.push('dm-migrations').uniq
 
   plugins.each do |plugin|
-    gem plugin, DM_VERSION, SOURCE => "#{DATAMAPPER}/#{plugin}#{REPO_POSTFIX}"
+    gem plugin, DM_VERSION, DM_UVERSION, SOURCE => "#{DATAMAPPER}/#{plugin}#{REPO_POSTFIX}"
   end
 
 end

Rakefile

@@ -2,29 +2,25 @@ require 'rubygems'
 require 'rake'
 
 begin
-
+  gem 'jeweler', '~> 1.5.2'
   require 'jeweler'
 
   Jeweler::Tasks.new do |gem|
-
     gem.name        = 'dm-accepts_nested_attributes'
     gem.summary     = 'Nested model assignment for datamapper'
     gem.description = 'A datamapper plugin that allows nested model assignment like activerecord.'
     gem.email       = 'gamsnjaga [a] gmail [d] com'
     gem.homepage    = 'http://github.com/snusnu/dm-accepts_nested_attributes'
     gem.authors     = [ 'Martin Gamsjaeger (snusnu)' ]
-
-    gem.add_dependency             'dm-core', '~> 1.0.0'
-
-    gem.add_development_dependency 'rspec',   '~> 1.3'
-    gem.add_development_dependency 'yard',    '~> 0.5'
-
+    gem.has_rdoc    = 'yard'
   end
 
   Jeweler::GemcutterTasks.new
 
   FileList['tasks/**/*.rake'].each { |task| import task }
 
-rescue LoadError
+rescue LoadError => e
   puts 'Jeweler (or a dependency) not available. Install it with: gem install jeweler'
+  puts '-----------------------------------------------------------------------------'
+  puts e.backtrace # Let's help by actually showing *which* dependency is missing
 end