libnss-files-udeb 2.17-7ubuntu1 (amd64 binary) in ubuntu saucy

 Contains the standard libraries that are used by nearly all programs on
 the system. This package includes shared versions of the standard C library
 and the standard math library, as well as many others.
 .
 This package contains the files NSS helper needed for the Debian installer.
 Do not install it on a normal system.