dose-builddepcheck thinks that no package is buildable

[Paul Dufresne]

Was searching what are the missing package needed for sbcl to be built (sbcl is 
a Common Lisp compiler).

~/.config/dpkg/buildflags.conf

paul@binou:~$ dose-builddebcheck -v --deb-native-arch=i386 
/var/lib/apt/lists/deb.debian.org_debian-ports_dists_sid_main_binary-all_Packages
 /var/lib/apt/lists/deb.debian.org_debian_dists_sid_main_source_Sources 
(I)Dose_deb: Parsing Sources file 
/var/lib/apt/lists/deb.debian.org_debian_dists_sid_main_source_Sources...
(I)Dose_common: total packages 32570
(I)Dose_deb: Parsing Packages file 
/var/lib/apt/lists/deb.debian.org_debian-ports_dists_sid_main_binary-all_Packages...
(I)Dose_common: total packages 30324
output-version: 1.2
native-architecture: i386
host-architecture: i386
binary-packages: 62894
source-packages: 32570
broken-packages: 32570
paul@binou:~$ 

The reason:
output-version: 1.2
native-architecture: i386
host-architecture: i386
report:
 -
  package: 0ad
  version: 0.0.23.1-5
  architecture: amd64,arm64,armhf,i386,kfreebsd-amd64,kfreebsd-i386
  type: src
  status: broken
  reasons:
   -
    missing:
     pkg:
      package: init-system-helpers
      version: 1.60
      architecture: all
      essential: true
      unsat-dependency: perl-base:i386 (>= 5.20.1-3)

They all miss: init-system-helpers of perl-base:i386

apt install perl-base shows:
perl-base is already at the newest version (5.32.1-3)

Obviously something is wrong, because lot of packages are installable.
Maybe because debian-ports not having source repository... so I had to edit in 
sources.list to use debian rather than debian-ports?

Sad it is not working, would be an informative report.