[Bug 2012762] Re: If fonts-ubuntu isn't installed, the initramfs plymouth hook fails at fc-cache

[feren]

A custom Plymouth theme that is not any of the default themes.

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https://bugs.launchpad.net/bugs/2012762

Title:
  If fonts-ubuntu isn't installed, the initramfs plymouth hook fails at
  fc-cache

Status in plymouth package in Ubuntu:
  Triaged

Bug description:
  If you remove fonts-ubuntu from your system, or never have said package installed in the first place, and have plymouth installed, and try to update-initramfs, the hook at /usr/share/initramfs-tools/hooks/plymouth will abort, causing the update-initramfs command to fail.
  While semi-unrelated, in the case of an APT operation triggering initramfs-tools, this would also lead to package management failure (which can cause an endless loop of package management failure as APT may attempt, and fail, to run update-initramfs before it ever tries to install other packages such as fonts-ubuntu).

  The script fails at line 147 (fc-cache) and removing the output
  disabling contents at the end of the command reveals that it fails to
  read /usr/share/fonts - upon further inspection /usr/share/fonts
  indeed never exists, with these conditions in effect, inside the
  initramfs being created.

  It appears that having fonts-ubuntu installed leads to a mkdir command
  right before that command, which only runs if the Ubuntu fonts exist,
  creating /usr/share/fonts while it's in the process of creating a
  directory to copy those fonts to.

  This can be fixed by adding this command underneath 'mkdir -p "${DESTDIR}/usr/local/share/fonts"':
  mkdir -p "${DESTDIR}/usr/share/fonts"

  Ubuntu version: 22.04.2
  plymouth version: 0.9.5+git20211018-1ubuntu3

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