Revert "Maintenance / investigation: reapply lxml workaround for MacO…

…S unit test workflows (#779)"

This reverts commit 0a875e8.

Conflicts:
	.github/workflows/unittests.yaml

.github/workflows/unittests.yaml

@@ -17,11 +17,6 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-        include:
-          # set toxenv to workaround-darwin on macos (check tox.ini)
-          - toxenv: py
-          - os: macos-latest
-            toxenv: workaround-darwin
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -32,4 +27,4 @@ jobs:
       - name: Run Tests
         run: |
           pip install tox
-          tox -e ${{ matrix.toxenv }}
+          tox

tox.ini

@@ -5,15 +5,6 @@ isolated_build = true
 deps = -r{toxinidir}/requirements-dev.txt
 commands = coverage run -m unittest {posargs}
 
-# The system-provided libxml2 on MacOS is typically outdated and this can lead to lxml parsing issues
-# Using PyPi-provided binary wheels instead resolves this
-# We are affected by https://bugs.launchpad.net/lxml/+bug/1949271 in test_wild_mode when using system-provided libxml2 on MacOS
-platform =
-    workaround-darwin: darwin
-install_command =
-    py: python -I -m pip install {opts} {packages}
-    workaround-darwin: python -I -m pip install --only-binary=lxml {opts} {packages}
-
 [testenv:lint]
 # note: skip_install affects whether the package-under-test is installed; not whether deps are installed
 skip_install = true