Bug#970689: live-build: fails when lilo can't be installed, even if unused

[Witold Baryluk <witold.baryluk@gmail.com>]

Package: live-build
Version: 1:20191221
Severity: important
X-Debbugs-Cc: witold.baryluk@gmail.com

Dear Maintainer,

I am using lb this way:L

sudo --preserve-env=DEBIAN_FRONTEND,APT_LISTCHANGES,NEEDRESTART_MODE,NEEDRESTART_SUSPEND,DEBIAN_FRONT \
  lb config \
  --apt-recommends true \
  --archive-areas "main non-free contrib" \
  --binary-images iso-hybrid \
  --backports false \
  --bootloaders syslinux \
  --debconf-priority critical \
  --debian-installer live \
  --debian-installer-gui true \
  --distribution bullseye \
  --security false \
  --zsync false \
  --bootappend-live "intel_iommu=on iommu=pt radeon.si_support=0 amdgpu.si_support=1 amdgpu.ppfeaturemask=0xffffffff boot=live components locales=en_US.UTF-8"




Yet, `lb build` fails because it tries to install package lilo, which is
at the moment not available in Debian testing (removed due to ftbfs with
gcc-10). I don't need lilo in this build, so lb build shouldn't even
attempt to install it.

I am building iso image image, so I need to use syslinux (which is a
default for iso-hybrid anyway). I don't think grub-efi would work on iso?

I don't know why lb build is trying to install (and then remove) lilo.


-- Package-specific info:

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing-debug
  APT policy: (500, 'testing-debug'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.7.0-1-amd64 (SMP w/32 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages live-build depends on:
ii  debootstrap  1.0.123

Versions of packages live-build recommends:
ii  apt-utils                       2.1.7
ii  bzip2                           1.0.8-3
ii  cpio                            2.13+dfsg-2
ii  file                            1:5.38-5
ii  live-boot-doc                   1:20190614
ii  live-config-doc                 11.0.1
ii  live-manual-html [live-manual]  2:20151217.1
ii  wget                            1.20.3-1+b3
ii  xz-utils                        5.2.4-1+b1

Versions of packages live-build suggests:
ii  e2fsprogs  1.45.6-1
ii  mtd-utils  1:2.1.1-1.1
ii  parted     3.3-4

-- no debconf information