[Bug 1837254] Re: ubuntu-cpc parallel builds produce unused files

[Francis Ginther]

** Tags added: id-5d31721934a49770eea1ff43

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https://bugs.launchpad.net/bugs/1837254

Title:
  ubuntu-cpc parallel builds produce unused files

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  In parallel builds where a list of image targets are provided, the build
  may produce binaries that are not part of the named set of targets but
  are created by series dependencies.  These implicitly created binaries
  may be generated by multiple builds but are unused as our convention for
  the ubuntu-cpc project is to only consume binaries from the explicitly
  named image targets; this avoids overwriting the same object by multiple
  parallel builds.  The problem is that as we build out parallel jobs for
  a number of image targets (multiplied by each supported architecture)
  we're wasting a lot of resources.

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