Hello, I am updating the xraylarch package which contain something like this in the setup.cfg
``` install_requires = asteval>=0.9.28 numpy>=1.20 scipy>=1.7 uncertainties>=3.1.4 lmfit>=1.2.1 pyshortcuts>=1.9.0 xraydb>=4.5 silx>=0.15.2 matplotlib>=3.5 sqlalchemy>=2.0 sqlalchemy_utils h5py>=3.2 hdf5plugin pillow>=8.3.2 numdifftools pandas packaging pip pyyaml toml termcolor dill imageio charset-normalizer peakutils requests scikit-image scikit-learn psutil pymatgen mp_api pycifrw fabio pyfai numexpr==2.8.4; python_version < '3.9' numexpr>=2.8.7; python_version > '3.8' [options.extras_require] wxgui = wxpython>=4.1 wxutils>=0.3.0 wxmplot>=0.9.57 qtgui = PyQt5 pyqtwebengine pyqtgraph epics = pyepics>=3.5.0 psycopg2-binary jupyter = jupyter_core>=5.0 jupyter_client jupyter_server notebook nbformat ipywidgets plotly py3dmol doc = sphinx numpydoc sphinxcontrib-bibtex sphinxcontrib-argdoc pycairo; platform_system=="Windows" dev = pytest pytest-cov coverage build pre-commit twine larix = %(wxgui)s %(jupyter)s all = %(dev)s %(doc)s %(wxgui)s %(qtgui)s %(jupyter)s %(epics)s ``` When I compile the package, I got the dh_python3 computed runtime dependencies from the install_requires. Now I would like to build this package but with the larix optional dependencies. so I added all the dependencies in the Build-Depends, but dh_python3 still produce the previous dependencies. How can I teach pybuild that I really want xraylarch[larix] ? thanks Frederic