Re: User interaction in postinst
Tollef Fog Heen <firstname.lastname@example.org> writes:
> * Roger Leigh
> | >From what I have read about debconf, the questions it asks are static.
> | However, in this case, I can't generate the questions until the
> | package is installed: the translations are gettext .mo files in the
> | gimpprint-locales package (which may be not installed or incomplete),
> | and the list of printer drivers is extracted from libgimpprint.so.1 by
> | genppd at run-time (and the list of printers changes as new ones are
> | added).
> | Is using debconf possible in this case? Preconfiguring will fail, as
> | I can't get the data to list at that point. The "multiselect" widget
> | type is just what I'm looking for, though.
> db_subst in the postinst, or make it possible to run it after the
> package has been installed?
Do you mean like in the following script? I ran this once (as root)
but I only saw the first (note) question. The other two were not
asked (according to the debconf DB, they were seen, and when I deleted
those entries still nothing happened). The DB correctly shows the
I'm not sure why this is going wrong since the templates *do* exist,
and it does use the correct template file:
# ./config configure 4.3.4
debconf (developer): frontend started
debconf (developer): Trying to find a templates file..
debconf (developer): Trying ./config.templates
debconf (developer): Trying ./templates
debconf (developer): I guess it is ./templates
debconf (developer): frontend running, package name is
debconf (developer): starting ./config configure 4.3.4
debconf (developer): <-- INPUT medium cupsys-driver-gimpprint/autogen_ppd_tell
debconf (developer): --> 10 "cupsys-driver-gimpprint/autogen_ppd_tell" doesn't exist
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- SUBST cupsys-driver-gimpprint/language_ask default C
debconf (developer): --> 10 cupsys-driver-gimpprint/language_ask doesn't exist
Also, since the config script is passed the same parameters in both
the preconfigure and postinst cases, is there an easy way to terminate
the script when preconfiguring (since the questions might be empty or
outdated if the dependencies weren't met)??
Thanks for your help,
# Source debconf library.
echo "Display message"
# Display message about what the questions are about
db_input medium cupsys-driver-gimpprint/autogen_ppd_tell || true
db_go || true
echo "Get languages:"
languages=`echo C,\`cups-genppd -L\` | sed -e 's/ /,/g'`
#db_fset cupsys-driver-gimpprint/language_ask seen false
db_subst cupsys-driver-gimpprint/language_ask default "C"
db_subst cupsys-driver-gimpprint/language_ask choices $languages
db_input medium cupsys-driver-gimpprint/language_ask || true
db_go || true
echo "Get drivers"
drivers=`echo \`cups-genppd -M\` | sed -e 's/ /,/g'`
#db_fset cupsys-driver-gimpprint/driver_ask seen false
db_subst cupsys-driver-gimpprint/driver_ask default $drivers
db_subst cupsys-driver-gimpprint/driver_ask choices $drivers
db_input cupsys-driver-gimpprint/driver_ask || true
db_go || true
Description: Generation of PPD files
This package uses PostScript Printer Description files to allow
CUPS to use the GIMP-Print printer driver library for
Previously, the package included over a hundred PPD files, but
this approach was not flexible enough. Most users use only
one or two PPD files, and the rest take up a lot of disk space.
In addition, PPD files can be localised to use your native
language. Previously, the PPD files were in US English only.
The package will now ask you which languages you would like
the PPD files to use, and which printers you wish to
generate PPDs for.
Description: Which languages would you like to use?
You should choose at least one language. The PPD files which
are to be generated will use each of the languages that you
choose. A separate PPD file will be written (per printer)
for each language.
Descriptions: Which printer models would you like to use?
Choose which models of printer that you have. For each model,
one PPD file will be created for each language that you have chosen.
** Registration Number: 151826, http://counter.li.org **
Need Epson Stylus Utilities? http://gimp-print.sourceforge.net/
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