DH_INSTALLDEBCONF(1) Debhelper DH_INSTALLDEBCONF(1)
NAME
dh_installdebconf - install files used by debconf in package build
directories
SYNOPSIS
dh_installdebconf [debhelper options] [-n] [-- params]
DESCRIPTION
dh_installdebconf is a debhelper program that is responsible for
installing files used by debconf into package build directories.
It also automatically generates the postrm commands needed to interface
with debconf. The commands are added to the maintainer scripts by
dh_installdeb. See dh_installdeb(1) for an explanation of how that
works.
Note that if you use debconf, your package probably needs to depend on
it (it will be added to ${misc:Depends} by this program).
Note that for your config script to be called by dpkg, your postinst
needs to source debconf's confmodule. dh_installdebconf does not
install this statement into the postinst automatically as it is too
hard to do it right.
FILES
debian/package.config
This is the debconf config script, and is installed into the DEBIAN
directory in the package build directory.
Inside the script, the token #DEBHELPER# is replaced with shell
script snippets generated by other debhelper commands.
debian/package.templates
This is the debconf templates file, and is installed into the
DEBIAN directory in the package build directory.
debian/po/
If this directory is present, this program will automatically use
po2debconf(1) to generate merged templates files that include the
translations from there.
For this to work, your package should build-depend on po-debconf.
OPTIONS
-n, --no-scripts
Do not modify postrm script.
-- params
Pass the params to po2debconf.
-DTOKEN=VALUE, --define TOKEN=VALUE
Define tokens to be replaced inside the maintainer scripts when it
is generated. Please note that the limitations described in
"Limitations in token names" also applies to tokens defined on the
command line. Invalid token names will trigger an error.
In the simple case, this parameter will cause #TOKEN# to be
replaced by VALUE. If VALUE starts with a literal @-sign, then
VALUE is expected to point to a file containing the actual value to
insert.
An explicit declared token with this parameter will replace built-
in tokens.
Test examples to aid with the understanding:
cat >> debian/config <<EOF
#SIMPLE#
#FILEBASED#
EOF
echo -n "Complex value" > some-file
dh_installdeb --define SIMPLE=direct --define FILEBASED=@some-file
In this example, #SIMPLE# will expand to direct and #FILEBASED#
will expand to Complex value.
It is also possible to set package-specific values for a given
token. This is useful when dh_installdebconf is acting on multiple
packages that need different values for the same token. This is
done by prefixing the token name with pkg.package-name..
This can be used as in the following example:
cat >> debian/foo.config <<EOF
# Script for #PACKAGE#
#TOKEN#
EOF
cat >> debian/bar.config <<EOF
# Script for #PACKAGE#
#TOKEN#
EOF
cat >> debian/baz.config <<EOF
# Script for #PACKAGE#
#TOKEN#
EOF
dh_installdebconf -pfoo -pbar -pbaz --define TOKEN=default --define pkg.bar.TOKEN=unique-bar-value \
--define pkg.baz.TOKEN=unique-baz-value
In this example, #TOKEN# will expand to default in
debian/foo.config, to unique-bar-value in debian/bar.config and to
unique-baz-value in debian/baz.config.
Note that the #pkg.*# tokens will be visible in all scripts acted
on. E.g. you can refer to #pkg.bar.TOKEN# inside
debian/foo.config and it will be replaced by unique-bar-value.
SUBSTITUTION IN MAINTAINER SCRIPTS
The dh_installdebconf will automatically replace the following tokens
inside a provided maintainer script (if not replaced via -D/--define):
#DEB_HOST_NAME#, #DEB_BUILD_NAME#, #DEB_TARGET_NAME#
These tokens are replaced with the respective variable from
dpkg-architecture(1). In almost all cases, you will want use the
#DEB_HOST_NAME variant in a script to ensure you get the right
value when cross-building.
On a best effort, tokens of this pattern that do not match a
variable in dpkg-architecture(1) will be left as-is.
#ENV.NAME#
These tokens of this form will be replaced with value of the
corresponding environment variable. If the environment variable is
unset, the token is replaced with the empty string.
Note that there are limits on which names can be used (see
"Limitations in token names").
#PACKAGE#
This token is by default replaced by the package name, which will
contain the concrete script.
Limitations in token names
All tokens intended to be substituted must match the regex:
#[A-Za-z0-9_.+]+#
Tokens that do not match that regex will be silently ignored if found
in the script template. Invalid token names passed to -D or --define
will cause dh_installdebconf to reject the command with an error in
most cases.
SEE ALSO
debhelper(7)
This program is a part of debhelper.
AUTHOR
Joey Hess <joeyh@debian.org>
13.11.4 2023-01-02 DH_INSTALLDEBCONF(1)
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