[Bug 1890481] Re: grub2 packaging should store a record of the core ABI and fail the build if it changes

[Francis Ginther]

** Tags added: id-5f2b00088bba155ee7970452

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Title:
  grub2 packaging should store a record of the core ABI and fail the
  build if it changes

Status in grub2 package in Ubuntu:
  New

Bug description:
  The update of grub2 for CVE-2020-10713 et al introduced a change to
  the ABI of the grub core.  This was intentional, but had consequences
  that were not obvious to those involved in the update who were aware
  of the ABI change.

  I propose that we store a record of the core ABI in the package,
  similar to what is done with dpkg-gensymbols, and fail the build when
  the ABI doesn't match, with an error message explaining to the builder
  the potential knock-on effects of a changed ABI.

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