[Bug 1792189] Re: linux-firmware does not depend on initramfs-tools

[Julian Andres Klode]

** Tags removed: patch

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Title:
  linux-firmware does not depend on initramfs-tools

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  In bug #1646197 the linux-firmware.postinst was added to call update-
  initramfs (provided by initramfs-tools.  If the initramfs-tools
  package is not installed the installation of linux-firmware will fail.

  Recreate:
  sudo apt-get purge --assume-yes '^linux-.*' 'linux-base+' initramfs*
  sudo apt-get install --assume-yes linux-generic

  Result:
  Setting up linux-modules-4.15.0-34-generic (4.15.0-34.37) ...
  Setting up linux-headers-4.15.0-34 (4.15.0-34.37) ...
  Setting up linux-headers-4.15.0-34-generic (4.15.0-34.37) ...
  Setting up initramfs-tools-bin (0.130ubuntu3.3) ...
  Setting up linux-firmware (1.173.1) ...
  update-initramfs: Generating /boot/initrd.img-4.15.0-1021-kvm
  /usr/sbin/mkinitramfs: 66: .: Can't open /etc/initramfs-tools/initramfs.conf
  update-initramfs: failed for /boot/initrd.img-4.15.0-1021-kvm with 2.
  dpkg: error processing package linux-firmware (--configure):
   installed linux-firmware package post-installation script subprocess returned error exit status 2
  ...
  Errors were encountered while processing:
   linux-firmware
   linux-image-generic
   linux-generic
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  Impact:
  Builds of minimized images start with an image that has the linux-kvm kernel but lack initramfs-tools.  Derivative builds that require a different kernel, linux-generic for example, will purge the existing kernel and install the correct kernel which could pull in linux-firmware and initramfs-tools.  In that case the builds fail unless initramfs-tools is installed prior to kernel installation as a workaround for this missing package dependency.

  This has been recreated on cosmic and bionic, a fix is desired on
  each.  (I was unable to recreate on Xenial but that package lacks the
  dependency as well).

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