external/lxml: Fix --enable-python=fully-internal build

After

    commit a4b4a90557f9fc1839fc0eb297f4c6a4e94c761a
    Date:   Sun Jul 2 14:54:23 2023 +0900

        lxml: upgrade to release 4.9.2

, my `--enable-python=fully-internal` build started
to fail with

    Building lxml version 4.9.2.
    Building without Cython.
    Building against libxml2 2.9.14 and libxslt 1.1.35
    Traceback (most recent call last):
      File "setup.py", line 207, in <module>
        setup(
      File ".../libreoffice/instdir/program/python-core-3.8.18/lib/distutils/core.py", line 108, in setup
        _setup_distribution = dist = klass(attrs)
      File ".../libreoffice/instdir/program/python-core-3.8.18/lib/distutils/dist.py", line 274, in __init__
        warnings.warn(msg)
    UserWarning: Unknown distribution option: 'project_urls'
    make[1]: *** [.../libreoffice/external/lxml/ExternalProject_lxml.mk:26: .../libreoffice/workdir/ExternalProject/lxml/build] Error 1
    make[1]: *** Waiting for unfinished jobs....
    make: *** [Makefile:289: build] Error 2

and Julien reports the same in [1].

The above commit includes a patch to switch from
setuptools to distutils.
Possibly the distutils variant of the `setup` function
doesn't know about the "project_urls" keyword argument
(at least in our bundled Python version),
so extend the patch to drop that from the
`setup.py`.

[1] https://gerrit.libreoffice.org/c/core/+/153863

Change-Id: Icfac9fb0a3c62d3b30c12bc23ddbc0f9b088d788
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/158230
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

external/lxml/UnpackedTarball_lxml.mk

@@ -13,7 +13,7 @@ $(eval $(call gb_UnpackedTarball_set_tarball,lxml,$(LXML_TARBALL)))
 
 $(eval $(call gb_UnpackedTarball_add_patches,lxml, \
 	external/lxml/0001-Make-regexp-string-raw-to-correct-its-escape-sequenc.patch.1 \
-	external/lxml/replace-setuptools-with-distutils.patch.0 \
+	external/lxml/replace-setuptools-with-distutils.patch.1 \
 ))
 
 # vim: set noet sw=4 ts=4:

external/lxml/replace-setuptools-with-distutils.patch.0

@@ -1,11 +0,0 @@
---- setupinfo.py
-+++ setupinfo.py
-@@ -4,7 +4,7 @@
- import os.path
- import subprocess
- 
--from setuptools.command.build_ext import build_ext as _build_ext
-+from distutils.command.build_ext import build_ext as _build_ext
- from distutils.core import Extension
- from distutils.errors import CompileError, DistutilsOptionError
- from versioninfo import get_base_dir

external/lxml/replace-setuptools-with-distutils.patch.1

@@ -0,0 +1,29 @@
+diff -ur lxml.org/setupinfo.py lxml/setupinfo.py
+--- lxml.org/setupinfo.py	2023-10-20 10:32:17.921500435 +0200
++++ lxml/setupinfo.py	2023-10-20 10:33:40.303323572 +0200
+@@ -4,7 +4,7 @@
+ import os.path
+ import subprocess
+ 
+-from setuptools.command.build_ext import build_ext as _build_ext
++from distutils.command.build_ext import build_ext as _build_ext
+ from distutils.core import Extension
+ from distutils.errors import CompileError, DistutilsOptionError
+ from versioninfo import get_base_dir
+diff -ur lxml.org/setup.py lxml/setup.py
+--- lxml.org/setup.py	2023-10-20 10:32:17.949501053 +0200
++++ lxml/setup.py	2023-10-20 10:33:09.082631759 +0200
+@@ -217,9 +217,10 @@
+     # `Unknown distribution option: 'bugtrack_url'`
+     # which distract folks from real causes of problems when troubleshooting
+     # bugtrack_url="https://bugs.launchpad.net/lxml",
+-    project_urls={
+-        "Source": "https://github.com/lxml/lxml",
+-    },
++    # same as for bugtrack_urls also for project_urls when using distutils instead of setuptools
++    #project_urls={
++    #    "Source": "https://github.com/lxml/lxml",
++    #},
+     description=(
+         "Powerful and Pythonic XML processing library"
+         " combining libxml2/libxslt with the ElementTree API."