-# entries for /etc/apt/sources.list (if empty the default is taken)
-MIRROR_LIST="
-deb http://ftp.tu-graz.ac.at/mirror/debian unstable main contrib non-free
-deb http://ftp.de.debian.org/debian unstable main contrib non-free
-"
+# specify entry which should be used for /etc/apt/sources.list,
+# if empty then any existing /etc/apt/sources.list will be taken
+CHROOTMIRROR='deb ftp://ftp.tugraz.at/mirror/debian unstable main contrib non-free'