Bug#990969: lxml: reproducible-builds: Build path embedded in documentation

[Vagrant Cascadian]

Source: lxml
Severity: normal
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: buildpath
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

The version is derived from the build directory name, which gets
embedded into the changes-VERSION.html file:

  https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/lxml.html

  usr/share/doc/python-lxml/html/changes-4.6.3+dfsg.html
  vs.
  usr/share/doc/python-lxml/html/changes-2nd.html

The attached patch changes debian/rules to use DEB_UPSTREAM_VERSION from
dpkg's pkg-info.mk instead of deriving the upstream version from the
build directory.


Unfortunately, there are other build path related issues in binaries,
but this significantly reduces the diff between builds.


Thanks for maintaining lxml!


live well,
  vagrant
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