todayman

d-i partman-auto/method         string raid
d-i partman-auto/disk           string  /dev/sdy /dev/sdac
d-i partman-md/device_remove_md boolean true
d-i partman-md/confirm          boolean true
d-i partman-lvm/confirm         boolean true
d-i partman-lvm/device_remove_lvm   boolean true
d-i partman/confirm             boolean true
d-i partman/confirm_nooverwrite boolean true 
d-i partman-auto-lvm/new_vg_name    string  vg0
d-i partman-auto-raid/recipe    string  \

todayman

#include <iostream>
#include <stdexcept>
#include <string>

class CompilerError : public std::runtime_error
{
    public:
    CompilerError(const std::string& what_arg)
        : std::runtime_error(what_arg)
    { }