Fix task chains

rake/homebrew.rake

@@ -46,7 +46,7 @@ namespace :homebrew do
         echo "Homebrew is installed. Moving on."
     end
 
-    task :update => :install do
+    task :update => "homebrew:install" do
         echo "Updating homebrew..."
         Homebrew.update
     end

rake/rbenv.rake

@@ -15,7 +15,7 @@ namespace :rbenv do
         end
     end
 
-    task :v2_0 => :install do
+    task :v2_0 => "rbenv:install" do
         v = "2.0.0-p451"
         unless Rbenv.is_version_installed?(v)
             echo "Building ruby #{v}"
@@ -23,7 +23,7 @@ namespace :rbenv do
         end
     end
 
-    task :v1_9 => :install do
+    task :v1_9 => "rbenv:install" do
         v = "1.9.3-p545"
         unless Rbenv.is_version_installed?(v)
             echo "Building ruby #{v}"
@@ -38,7 +38,7 @@ namespace :rbenv do
         end
     end
 
-    task :update => :install do
+    task :update => "rbenv:install" do
         Rbenv.installed_versions.each do |v| 
             echo "Updating ruby #{v}"
             Rbenv.update v

rake/vim.rake

@@ -3,7 +3,7 @@ require_relative "lib/output"
 require_relative "lib/homebrew"
 
 desc "Ensure vim/macvim is installed and up to date"
-task :vim
+task :vim => "vim:install"
 
 namespace :vim do
 

rake/zsh.rake

@@ -20,7 +20,7 @@ namespace :zsh do
         end
     end
 
-    task :update => :install do
+    task :update => "zsh:install" do
         echo "Updating oh-my-zsh"
         sh_safe 'cd ~/.oh-my-zsh && git pull'
     end