Fixed some pathing issues in the gem packaging task.

lib/tasks/package.rake

@@ -2,35 +2,36 @@ task :package => ["package:gem"]
 
 namespace :package do
   def package_dir
-    "pkg"
-  end
-
-  def gem_file
-    Pathname.glob("*.gem").first
+    Pathname.new("pkg")
   end
 
   desc "Package CruiseControl.rb as a gem."
-  task :gem => :prepare do
+  task :gem => [ :clean, :prepare ] do
     system "gem build cruisecontrolrb.gemspec"
-    verbose(true) { gem_file.rename(package_dir) }
+    gem_file = Pathname.glob("*.gem").first
+    verbose(true) { gem_file.rename(package_dir.join(gem_file)) }
   end
 
   desc "Remove all existing packaged files."
   task :clean do
-    verbose(true) { rm_f package_dir }
+    verbose(true) { package_dir.rmdir rescue nil }
   end
 
   desc "Install all dependencies using Bundler's deployment mode."
-  task :prepare => :clean
+  task :prepare do
+    verbose(true) { package_dir.mkdir rescue nil }
+  end
 
   namespace :gem do
     task :test => "package:gem" do
+      built_gems = Pathname.glob("#{package_dir}/*.gem")
+      raise "Gem not built successfully" if built_gems.empty?
+      gem_file = built_gems.first
+
       system "rvm gemset create ccrb-test"
       system "rvm gemset use ccrb-test"
       system "rvm --force gemset empty ccrb-test"
 
-      puts Pathname.glob("#{package_dir}/*.gem").inspect
-      gem_file = Pathname.glob("#{package_dir}/*.gem").first
       system "gem install #{gem_file}"
       system "cruise start"
       system "rvm gemset use ccrb"