Исходный код glibc:
Предупреждение: этот пакет предназначен только для сборки образов debian-installer. Не устанавливайте его в рабочую систему Debian.
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 a minimal set of libraries needed for the Debian installer. Do not install it on a normal system.