[Debconf-devel] Problems preseeding a package at install time - help?

[Jo Shields]

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On 21/04/14 01:31, Cyril Brulebois wrote:
> Jo Shields <directhex at apebox.org> (2014-04-20):
>> I want to preseed a preinst value used by the package "libfglrx",
>> which is installed via a dependency from "fglrx-driver" which is
>> listed in .disk/base_include
>> 
>> libfglrx.preinst includes the check:
>> 
>> # allow to disable the check via preseeding db_get
>> fglrx-driver/check-for-unsupported-gpu test "$RET" = "true" ||
>> return 0
>> 
>> And on an installed system, debconf-get-selections includes:
>> 
>> libfglrx	fglrx-driver/check-for-unsupported-gpu	boolean true
>> 
>> which matches the default value defined in libfglrx.templates:
>> 
>> Template: fglrx-driver/check-for-unsupported-gpu Type: boolean 
>> Default: true
>> 
>> What I want to do is preseed this value as false, to disable the
>> check. I have added to my preseed file:
>> 
>> libfglrx fglrx-driver/check-for-unsupported-gpu boolean false
> 
> I've done that (not installed anything fglrx-ish, just the base
> system) and the installed system has indeed the seen flag and the
> false value for the said setting… Installing libfglrx afterwards
> also keeps said settings.

This was a much more helpful clue than you'd think.

Apparently, preseeding does not work for packages installed by
debootstrap - and .disk/base_include passes package lists to
debootstrap for it to install. By removing those entries from
.disk/base_include, and installing them later via d-i pkgsel/include,
then preseeding works as intended.
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