Yeah, "apt-get install php" is much easier to type than "apt-get install sbcl perl ghc python ruby ..."... (The other langauges also all run faster, use less memory, and have more features.)
(And no, you should not compile your app into your frontend webserver. Use FastCGI or a reverse proxy!)
(And no, you should not compile your app into your frontend webserver. Use FastCGI or a reverse proxy!)