After visiting How do I list the default installed packages?, I read ubuntu-14.04.2-desktop-i386.manifest and found (Ctrl+F) that it lists gparted 0.18.0-1 but (we know that) gparted is not installed by default!
However, Gparted is installed when try Ubuntu (using Live CD Environment) hence seems to be removed while installing system.
So, I want to know Why package listed in .manifest is not installed with OS?
apt-cache show gpartedtells me :Task: ubuntu-live, ubuntu-usb-live, edubuntu-live, edubuntu-usb-live, xubuntu-live, lubuntu-live, ubuntustudio-desktop, ubuntu-gnome-live. So perhaps the installer checks that somehow ? – Sergiy Kolodyazhnyy Jun 15 '15 at 11:17i18n/l10n? – Pandya Jun 15 '15 at 11:20