============================= test session starts ==============================
platform linux -- Python 3.10.1, pytest-6.2.5, py-1.11.0, pluggy-0.13.1
rootdir: /build/python-pygments/src/Pygments-2.11.0
collected 3721 items / 1 error / 3720 selected

==================================== ERRORS ====================================
________ ERROR collecting tests/test_html_formatter_linenos_elements.py ________
ImportError while importing test module '/build/python-pygments/src/Pygments-2.11.0/tests/test_html_formatter_linenos_elements.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_html_formatter_linenos_elements.py:9: in <module>
    from .support import structural_diff
tests/support/structural_diff.py:1: in <module>
    import lxml.html
E   ModuleNotFoundError: No module named 'lxml'
=========================== short test summary info ============================
ERROR tests/test_html_formatter_linenos_elements.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
============================== 1 error in 24.29s ===============================
==> ERROR: A failure occurred in check().
    Aborting...