On Sun, 12 Sep 2021 10:27:15 +0100 Simon McVittie <s...@debian.org> wrote:
> Package: dpkg
> Version: 1.20.9
> Severity: wishlist
>
> Packages that have a plugin architecture, like glib2.0 and gdk-pixbuf,
> often want to know the multiarch tuple in their maintainer scripts so
> that they can enumerate plugins in a multiarch-qualified directory or
> run multiarch-qualified helper programs.
>
> At the moment, dpkg provides DPKG_MAINTSCRIPT_PACKAGE and
> DPKG_MAINTSCRIPT_ARCH in maintainer scripts' enviroment, but packages
> that need to know the multiarch tuple have to generate their maintainer
> scripts from a template: for example, glib2.0 and gdk-pixbuf have a
> .postinst.in template containing #MULTIARCH#, which gets substituted by
> the package build.
>
> It would be simpler for packages in this situation if dpkg provided
> something like DPKG_MAINTSCRIPT_MULTIARCH in the environment.
>
> smcv
>
>
Hi,
Already mentioned this to Simon on IRC, but I figured it would make
sense to say it on the bug as well.
Since debhelper/12.5(.1), dh_installdeb provides the Multi-arch tuple
for you via the #DEB_HOST_MULTIARCH# token in your hand-written
maintainer scripts. You can also reference other
DEB_{HOST,BUILD,TARGET} variables as well as environment variables
without any custom substitution process (see man dh_installdeb for
details). I hope it will cover your need for having ".in" maintainer
scripts and your custom substitution.
(This is not a statement on whether dpkg should or should not provide
this variable at runtime - just a remark that dh_installdeb might solve
the use-case already)
Thanks,
~Niels
