Fixing Rakefile's bootstrap

Rakefile

-task :build do
-  title "Building the gem"
-end
-
-require "bundler/gem_tasks"
-
 # Bootstrap task
 #-----------------------------------------------------------------------------#
 
@@ -25,19 +19,33 @@ task :bootstrap, :use_bundle_dir? do |t, args|
     ENV['ARCHFLAGS'] = '-Wno-error=unused-command-line-argument-hard-error-in-future'
   end
 
+  if system('which bundle')
     puts "Installing gems"
     if args[:use_bundle_dir?]
       execute_command "env XCODEPROJ_BUILD=1 bundle install --path ./travis_bundle_dir"
     else
       execute_command "env XCODEPROJ_BUILD=1 bundle install"
     end
+  else
+	$stderr.puts red("[!] Please install the bundler gem manually:\n" \
+	  '    $ [sudo] gem install bundler')
+	exit 1
+  end
 end
 
-# Post release
-#-----------------------------------------------------------------------------#
+begin
+
+  task :build do
+    title "Building the gem"
+  end
+
+  require "bundler/gem_tasks"
 
-desc "Updates the last know version of CocoaPods in the specs repo"
-task :post_release do
+  # Post release
+  #-----------------------------------------------------------------------------#
+  
+  desc "Updates the last know version of CocoaPods in the specs repo"
+  task :post_release do
     title "Updating last known version in Specs repo"
     specs_branch = 'master'
     Dir.chdir('../Specs') do
@@ -47,7 +55,7 @@ task :post_release do
   
       yaml_file  = 'CocoaPods-version.yml'
       unless File.exist?(yaml_file)
-      $stderr.puts "[!] Unable to find #{yaml_file}!"
+        $stderr.puts red("[!] Unable to find #{yaml_file}!")
         exit 1
       end
       require 'yaml'
@@ -60,12 +68,12 @@ task :post_release do
       sh "git commit #{yaml_file} -m 'CocoaPods release #{gem_version}'"
       sh "git push"
     end
-end
+  end
   
-# Spec
-#-----------------------------------------------------------------------------#
+  # Spec
+  #-----------------------------------------------------------------------------#
   
-namespace :spec do
+  namespace :spec do
   
     def specs(dir)
       FileList["spec/#{dir}_spec.rb"].shuffle.join(' ')
@@ -105,7 +113,7 @@ namespace :spec do
     desc "Run the integration spec"
     task :integration do
       unless File.exists?('spec/cocoapods-integration-specs')
-      $stderr.puts "Integration files not checked out. Run `rake bootstrap`"
+        $stderr.puts red("Integration files not checked out. Run `rake bootstrap`")
         exit 1
       end
   
@@ -186,13 +194,13 @@ namespace :spec do
     end
   
     task :clean_env => [:clean_vcr, :unpack_fixture_tarballs, "ext:cleanbuild"]
-end
+  end
   
-# Examples
-#-----------------------------------------------------------------------------#
+  # Examples
+  #-----------------------------------------------------------------------------#
   
-task :examples => "examples:build"
-namespace :examples do
+  task :examples => "examples:build"
+  namespace :examples do
   
     desc "Open all example workspaces in Xcode, which recreates the schemes."
     task :recreate_workspace_schemes do
@@ -232,14 +240,19 @@ namespace :examples do
         end
       end
     end
-end
+  end
   
-#-----------------------------------------------------------------------------#
+  #-----------------------------------------------------------------------------#
   
-desc "Run all specs"
-task :spec => 'spec:all'
+  desc "Run all specs"
+  task :spec => 'spec:all'
   
-task :default => :spec
+  task :default => :spec
+
+rescue LoadError
+  $stderr.puts red('[!] Some Rake tasks haven been disabled because the ' \
+    'environment couldn’t be loaded. Be sure to run `rake bootstrap` first.')
+end
 
 # Helpers
 #-----------------------------------------------------------------------------#
@@ -267,3 +280,6 @@ def title(title)
   puts
 end
 
+def red(string)
+  "\033[0;31m#{string}\e[0m"
+end