[Bug 2054741] Re: dpkg-buildpackage ignores DEB_BUILD_PROFILES

[Andreas Hasenack]

Mantic verification

Reproducing the bug with 1.22.0ubuntu1:
$ apt-cache policy dpkg-dev
dpkg-dev:
  Installed: 1.22.0ubuntu1
  Candidate: 1.22.0ubuntu1
  Version table:
 *** 1.22.0ubuntu1 500
        500 http://br.archive.ubuntu.com/ubuntu mantic/main amd64 Packages
        100 /var/lib/dpkg/status

$ dpkg-buildpackage -uc -us 2>&1 | grep -A 1 DEB_BUILD_PROFILES
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb

$ DEB_BUILD_PROFILES=foo dpkg-buildpackage -uc -us 2>&1 | grep -A 1 DEB_BUILD_PROFILES
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb


Updating to 1.22.0ubuntu1.1 from mantic-proposed:
$ apt-cache policy dpkg-dev
dpkg-dev:
  Installed: 1.22.0ubuntu1.1
  Candidate: 1.22.0ubuntu1.1
  Version table:
 *** 1.22.0ubuntu1.1 500
        500 http://br.archive.ubuntu.com/ubuntu mantic-proposed/main amd64 Packages
        100 /var/lib/dpkg/status


Default was kept:
$ dpkg-buildpackage -uc -us 2>&1 | grep -A 1 DEB_BUILD_PROFILES
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb
--
echo $DEB_BUILD_PROFILES
noudeb


And the extra profile was added:
$ DEB_BUILD_PROFILES=foo dpkg-buildpackage -uc -us 2>&1 | grep -A 1 DEB_BUILD_PROFILES
echo $DEB_BUILD_PROFILES
noudeb foo
--
echo $DEB_BUILD_PROFILES
noudeb foo
--
echo $DEB_BUILD_PROFILES
noudeb foo


Mantic verification succeeded.

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https://bugs.launchpad.net/bugs/2054741

Title:
  dpkg-buildpackage ignores DEB_BUILD_PROFILES

Status in dpkg package in Ubuntu:
  Fix Released
Status in dpkg source package in Jammy:
  Fix Released
Status in dpkg source package in Mantic:
  Fix Released
Status in dpkg source package in Noble:
  Fix Released

Bug description:
  [Impact]

  DEB_BUILD_PROFILES= can be used in Debian to specify a build profile
  to use with dpkg-buildpackage. We want to use it in the systemd
  project to build the upstream packages for the Ubuntu autopkgtest
  cloud CI on Github. But in the Ubuntu's fork of dpkg,
  DEB_BUILD_PROFILES's value is ignored and unconditionally swapped with
  'noudeb'. This makes it impossible to use package-specific profiles,
  and it's a regression w.r.t Debian.

  [Fix]

  Backport patch from Noble that fixes the issue: https://code.launchpad.net/~bluca/ubuntu/+source/dpkg/+git/dpkg/+merge/461136
  and takes into account if the environment variable is set when reading the profile

  [Test]

  To reproduce it, simply print the content of DEB_BUILD_PROFILES in
  d/rules in any package and build with DEB_BUILD_PROFILES=foo dpkg-
  buildpackage. Before the fix, whatever is passed via the env var is
  ignored. After the fix, it will be respected.

  [Regression Potential]

  dpkg-buildpackage is used to build all packages, so in case of
  unforeseen issues other packages could potentially fail to build. A
  unit test exercising this change is included in the patch to minimize
  potential for regressions.

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