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Bug#976148: lxml: enable test suite during build

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  Bug#976148: lxml: enable test suite during build Emilio Pozuelo Monfort <pochu@debian.org> - 2021-06-08 14:10 +0200

#1061414 — Bug#976148: lxml: enable test suite during build

On 19/05/2021 10:01, Matthias Klose wrote:
> On 11/30/20 2:36 PM, Emilio Pozuelo Monfort wrote:
>> Source: lxml
>> Version: 4.6.1-1
>> Severity: normal
>> Tags: patch
>>
>> Hi,
>>
>> The attached patch runs the test suite for each supported python
>> version. It'd be good to do that to ensure lxml's funcionality.
>> The patch needs to do an in-tree build so that etree.so can be found.
>> I couldn't find a workaround for that but if that's a blocker I could
>> investigate further to avoid that in-tree build.
> 
> do we get that "for free" when using pybuild for the build?

pybuild also does out of tree builds (for py3.* and for py3.*-dbg). The same 
problem arises, I somehow can't get the out of tree etree.so picked up (setting 
up PYTHONPATH), perhaps because some files are being read from src/lxml/*.py 
(package lxml), while others (etree.so) need to be read from 
.pybuild/cpython3_3.9/build/lxml/ (also package lxml).

This seems to work:

cp .pybuild/cpython3_3.9/build/lxml/etree.cpython-39-x86_64-linux-gnu.so 
src/lxml/etree.so
cp .pybuild/cpython3_3.9/build/lxml/objectify.cpython-39-x86_64-linux-gnu.so 
src/lxml/objectify.so

python3.9 ./test.py
Skipping tests in lxml.cssselect - external cssselect package is not installed
Comparing with ElementTree 1.3.0

TESTED VERSION: 4.6.1
     Python:           sys.version_info(major=3, minor=9, micro=2, 
releaselevel='final', serial=0)
     lxml.etree:       (4, 6, 1, 0)
     libxml used:      (2, 9, 10)
     libxml compiled:  (2, 9, 10)
     libxslt used:     (1, 1, 34)
     libxslt compiled: (1, 1, 34)
     FS encoding:      utf-8
     Default encoding: utf-8
     Max Unicode:      1114111

----------------------------------------------------------------------
Ran 1938 tests in 3.742s


...but it's still somewhat hacky. Perhaps more modules need to be listed in 
setupinfo.py, and not just the compiled ones, so that src/*.py end up in 
.pybuild/cpython3_3.9/build/ and we don't have compiled and non-compiled modules 
split across two dirs? Or maybe there's something else I have missed that can be 
done to load the extension.

Cheers,
Emilio

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