apt-get install build-essential fails with the following errors:

~$ sudo apt-get install build-essential

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Package build-essential is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source



E: Package 'build-essential' has no installation candidate

I had just run sudo apt-get update before trying this install.

The folder /etc/apt/sources.list.d is empty. Here's the meat of /etc/apt/sources.list:

$ grep deb http: /etc/apt/sources.list  #(with "deb http://" deleted)  

us.archive.ubuntu.com/ubuntu/ raring main restricted  

us.archive.ubuntu.com/ubuntu/ raring-updates main restricted  

us.archive.ubuntu.com/ubuntu/ raring universe  

us.archive.ubuntu.com/ubuntu/ raring-updates universe  

us.archive.ubuntu.com/ubuntu/ raring multiverse  

us.archive.ubuntu.com/ubuntu/ raring-updates multiverse  

us.archive.ubuntu.com/ubuntu/ raring-backports main restricted universe multiverse  

security.ubuntu.com/ubuntu raring-security main restricted  

security.ubuntu.com/ubuntu raring-security universe  

security.ubuntu.com/ubuntu raring-security multiverse  

extras.ubuntu.com/ubuntu raring main  

This with ubuntu 13.04 64 bit.

apt-cache policy build-essential 

build-essential:

 Installed: (none)

 Candidate: (none)

 Version table: 

The directory /etc/apt/sources.list.d is empty.