[Bug 1947424] [NEW] Cannot set pbuilder build locale

[Rob Savoury]

Public bug reported:

The build locale cannot be set with pbuilder and always defaults to "C"
(for both LANG and LC_ALL on Launchpad builds) rather than to "C.UTF-8"
as used by sbuild for all official Debian and Ubuntu builds. This causes
FTBFS of various packages that depend on the correct locale being set on
the build system, often noticeable with the test suites of Python
packages for instance.

The attached patch changes only five lines of code (pbuilder-
buildpackage and pbuilderrc) to allow easy setting of the pbuilder build
locale. Based on local testing the patch works as intended, in that
packages depending on the correct locale which FTBFS using unpatched
pbuilder (yet build successfully with sbuild on Launchpad) now also
build successfully with the local patched pbuilder. Please consider
applying the patch.

** Affects: pbuilder (Ubuntu)
     Importance: Undecided
         Status: New

** Patch added: "allow-setting-pbuilder-build-locale.patch"
   https://bugs.launchpad.net/bugs/1947424/+attachment/5533328/+files/allow-setting-pbuilder-build-locale.patch

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https://bugs.launchpad.net/bugs/1947424

Title:
  Cannot set pbuilder build locale

Status in pbuilder package in Ubuntu:
  New

Bug description:
  The build locale cannot be set with pbuilder and always defaults to
  "C" (for both LANG and LC_ALL on Launchpad builds) rather than to
  "C.UTF-8" as used by sbuild for all official Debian and Ubuntu builds.
  This causes FTBFS of various packages that depend on the correct
  locale being set on the build system, often noticeable with the test
  suites of Python packages for instance.

  The attached patch changes only five lines of code (pbuilder-
  buildpackage and pbuilderrc) to allow easy setting of the pbuilder
  build locale. Based on local testing the patch works as intended, in
  that packages depending on the correct locale which FTBFS using
  unpatched pbuilder (yet build successfully with sbuild on Launchpad)
  now also build successfully with the local patched pbuilder. Please
  consider applying the patch.

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