sbuild dh: error: unable to load addon python3

[Geert Stappers <stappers@stappers.nl>]

Hello Mentors,


Your insights on `sbuild` are desired.

For an yet unknown reason does `sbuild` NOT honour Build-Depends request.


My sbuild has version 0.81.2

git clone URL https://salsa.debian.org/obfusk/kanjidraw.git
branch  debian/sid

In debian/control is

   Build-Depends: debhelper-compat (= 13),
               dh-python,
               python3-all,
               python3-setuptools,


Invoking sbuild with just 'sbuild' gives me:

  $ sbuild
  dh clean --with python3 --buildsystem=pybuild
  dh: error: unable to load addon python3: Can't locate
    Debian/Debhelper/Sequence/python3.pm in @INC
    (you may need to install the Debian::Debhelper::Sequence::python3 module)


Doing `apt-file search Debian/Debhelper/Sequence/python3.pm` yields
dh-python: /usr/share/perl5/Debian/Debhelper/Sequence/python3.pm


Why doesn't sbuild fetch and install build dependencies?

How deal with it??



Groeten
Geert Stappers
-- 
Silence is hard to parse