We use the preseed method to automate the installation process since Ubuntu 10.04. In particular, we use the pkgsel/include parameter to preinstall a set of packages. Up to Ubuntu 12.04 everything worked fine. For the old versions, we used the alternate installer.
Now we try to migrate to Ubuntu 14.04. Since there is no alternate installer anymore, we use the standard installer. In principle the installer recognizes the preseed file. For example, it correctly extracts the partition layout, sets the correct root password and mirror.
However, it ignores the pkgsel/include option. It just installs the standard set of packages. Moreover, it ignores the hostname obtained from dhcp.
Any ideas?