Added 'lamp stack removed' to clean up apt systems before installing …

…nginx. (e.g. rimuhosting instances come with a lamp stack preinstalled).

nginx.rb

@@ -157,7 +157,7 @@ def restart_nginx
 end
 
 dep 'webserver installed.src' do
-  requires 'passenger built', 'pcre.managed', 'libssl headers.managed', 'zlib headers.managed'
+  requires 'lamp stack removed', 'passenger built', 'pcre.managed', 'libssl headers.managed', 'zlib headers.managed'
   merge :versions, {:nginx => '0.8.54', :nginx_upload_module => '2.2.0'}
   source "http://nginx.org/download/nginx-#{var(:versions)[:nginx]}.tar.gz"
   extra_source "http://www.grid.net.ru/nginx/download/nginx_upload_module-#{var(:versions)[:nginx_upload_module]}.tar.gz"
@@ -189,3 +189,22 @@ def restart_nginx
     end
   }
 end
+
+dep 'lamp stack removed', :for => :apt do
+  def packages
+    shell("dpkg --get-selections | egrep 'apache|mysql|php'").split("\n").map {|l|
+      l.split(/\s+/, 2).first
+    }
+  end
+  met? {
+    packages.empty?
+  }
+  meet {
+    packages.each {|pkg|
+      log_shell "Removing #{pkg}", "apt-get -y remove --purge '#{pkg}'", :sudo => true
+    }
+  }
+  after {
+    sudo "apt-get -y autoremove"
+  }
+end