Move documentation requirements to setup.cfg

docs/requirements.txt

@@ -1,9 +1,1 b''
--e .[test]
-ipykernel
-setuptools>=18.5
-sphinx
-sphinx-rtd-theme
-docrepr
-matplotlib
-stack_data
-pytest<7
+-e .[doc]

setup.cfg

@@ -1,114 +1,122 b''
 [metadata]
 name = ipython
 version = attr: IPython.core.release.__version__
 url = https://ipython.org
 description = IPython: Productive Interactive Computing
 long_description_content_type = text/x-rst
 long_description = file: long_description.rst
 license_file = LICENSE
 project_urls =
     Documentation = https://ipython.readthedocs.io/
     Funding = https://numfocus.org/
     Source = https://github.com/ipython/ipython
     Tracker = https://github.com/ipython/ipython/issues
 keywords = Interactive, Interpreter, Shell, Embedding
 platforms = Linux, Mac OSX, Windows
 classifiers =
     Framework :: IPython
     Framework :: Jupyter
     Intended Audience :: Developers
     Intended Audience :: Science/Research
     License :: OSI Approved :: BSD License
     Programming Language :: Python
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
     Topic :: System :: Shells
 
 [options]
 packages = find:
 python_requires = >=3.8
 zip_safe = False
 install_requires =
     appnope; sys_platform == "darwin"
     backcall
     colorama; sys_platform == "win32"
     decorator
     jedi>=0.16
     matplotlib-inline
     pexpect>4.3; sys_platform != "win32"
     pickleshare
     prompt_toolkit>3.0.1,<3.1.0
     pygments>=2.4.0
     stack_data
     traitlets>=5
 
 [options.extras_require]
 black =
     black
 doc =
-    Sphinx>=1.3
+    ipykernel
+    setuptools>=18.5
+    sphinx>=1.3
+    sphinx-rtd-theme
+    docrepr
+    matplotlib
+    stack_data
+    pytest<7
+    %(test)s
 kernel =
     ipykernel
 nbconvert =
     nbconvert
 nbformat =
     nbformat
 notebook =
     ipywidgets
     notebook
 parallel =
     ipyparallel
 qtconsole =
     qtconsole
 terminal =
 test =
     pytest<7.1
     pytest-asyncio
     testpath
 test_extra =
     %(test)s
     curio
     matplotlib!=3.2.0
     nbformat
     numpy>=1.19
     pandas
     trio
 all =
     %(black)s
     %(doc)s
     %(kernel)s
     %(nbconvert)s
     %(nbformat)s
     %(notebook)s
     %(parallel)s
     %(qtconsole)s
     %(terminal)s
     %(test_extra)s
     %(test)s
 
 [options.packages.find]
 exclude =
     setupext
 
 [options.package_data]
 IPython.core = profile/README*
 IPython.core.tests = *.png, *.jpg, daft_extension/*.py
 IPython.lib.tests = *.wav
 IPython.testing.plugin = *.txt
 
 [options.entry_points]
 console_scripts =
     ipython = IPython:start_ipython
     ipython3 = IPython:start_ipython
 pygments.lexers =
     ipythonconsole = IPython.lib.lexers:IPythonConsoleLexer
     ipython = IPython.lib.lexers:IPythonLexer
     ipython3 = IPython.lib.lexers:IPython3Lexer
 
 [velin]
 ignore_patterns =
    IPython/core/tests
    IPython/testing
 
 [tool.black]
 exclude = 'timing\.py'