Add a matpltolib optional target dependency

Would help with https://github.com/ipython/matplotlib-inline/issues/4

pyproject.toml

@@ -1,206 +1,209 b''
 [build-system]
 requires = ["setuptools>=61.2"]
 # We need access to the 'setupbase' module at build time.
 # Hence we declare a custom build backend.
 build-backend = "_build_meta"  # just re-exports setuptools.build_meta definitions
 backend-path = ["."]
 
 [project]
 name = "ipython"
 description = "IPython: Productive Interactive Computing"
 keywords = ["Interactive", "Interpreter", "Shell", "Embedding"]
 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",
 ]
 requires-python = ">=3.10"
 dependencies = [
     'colorama; sys_platform == "win32"',
     "decorator",
     "exceptiongroup; python_version<'3.11'",
     "jedi>=0.16",
     "matplotlib-inline",
     'pexpect>4.3; sys_platform != "win32" and sys_platform != "emscripten"',
     "prompt_toolkit>=3.0.41,<3.1.0",
     "pygments>=2.4.0",
     "stack_data",
     "traitlets>=5.13.0",
     "typing_extensions; python_version<'3.12'",
 ]
 dynamic = ["authors", "license", "version"]
 
 [project.entry-points."pygments.lexers"]
 ipythonconsole = "IPython.lib.lexers:IPythonConsoleLexer"
 ipython = "IPython.lib.lexers:IPythonLexer"
 ipython3 = "IPython.lib.lexers:IPython3Lexer"
 
 [project.scripts]
 ipython = "IPython:start_ipython"
 ipython3 = "IPython:start_ipython"
 
 [project.readme]
 file = "long_description.rst"
 content-type = "text/x-rst"
 
 [project.urls]
 Homepage = "https://ipython.org"
 Documentation = "https://ipython.readthedocs.io/"
 Funding = "https://numfocus.org/"
 Source = "https://github.com/ipython/ipython"
 Tracker = "https://github.com/ipython/ipython/issues"
 
 [project.optional-dependencies]
 black = [
     "black",
 ]
 doc = [
     "ipykernel",
     "setuptools>=18.5",
     "sphinx>=1.3",
     "sphinx-rtd-theme",
     "sphinxcontrib-jquery",
     "docrepr",
     "matplotlib",
     "stack_data",
     "typing_extensions",
     "exceptiongroup",
     "ipython[test]",
 ]
 kernel = [
     "ipykernel",
 ]
 nbconvert = [
     "nbconvert",
 ]
 nbformat = [
     "nbformat",
 ]
 notebook = [
     "ipywidgets",
     "notebook",
 ]
 parallel = [
     "ipyparallel",
 ]
 qtconsole = [
     "qtconsole",
 ]
 terminal = []
 test = [
     "pytest<8",
     "pytest-asyncio<0.22",
     "testpath",
     "pickleshare",
 ]
 test_extra = [
     "ipython[test]",
     "curio",
     "matplotlib!=3.2.0",
     "nbformat",
     "numpy>=1.23",
     "pandas",
     "trio",
 ]
+matplotlib = [
+   "matplotlib"
+]
 all = [
-    "ipython[black,doc,kernel,nbconvert,nbformat,notebook,parallel,qtconsole,terminal]",
+    "ipython[black,doc,kernel,nbconvert,nbformat,notebook,parallel,qtconsole,matplotlib]",
     "ipython[test,test_extra]",
 ]
 
 [tool.mypy]
 python_version = "3.10"
 ignore_missing_imports = true
 follow_imports = 'silent'
 exclude = [
    'test_\.+\.py',
    'IPython.utils.tests.test_wildcard',
    'testing',
    'tests',
    'PyColorize.py',
    '_process_win32_controller.py',
    'IPython/core/application.py',
    'IPython/core/profileapp.py',
    'IPython/lib/deepreload.py',
    'IPython/sphinxext/ipython_directive.py',
    'IPython/terminal/ipapp.py',
    'IPython/utils/_process_win32.py',
    'IPython/utils/path.py',
 ]
 
 [tool.pytest.ini_options]
 addopts = [
    "--durations=10",
    "-pIPython.testing.plugin.pytest_ipdoctest",
    "--ipdoctest-modules",
    "--ignore=docs",
    "--ignore=examples",
    "--ignore=htmlcov",
    "--ignore=ipython_kernel",
    "--ignore=ipython_parallel",
    "--ignore=results",
    "--ignore=tmp",
    "--ignore=tools",
    "--ignore=traitlets",
    "--ignore=IPython/core/tests/daft_extension",
    "--ignore=IPython/sphinxext",
    "--ignore=IPython/terminal/pt_inputhooks",
    "--ignore=IPython/__main__.py",
    "--ignore=IPython/external/qt_for_kernel.py",
    "--ignore=IPython/html/widgets/widget_link.py",
    "--ignore=IPython/html/widgets/widget_output.py",
    "--ignore=IPython/terminal/console.py",
    "--ignore=IPython/utils/_process_cli.py",
    "--ignore=IPython/utils/_process_posix.py",
    "--ignore=IPython/utils/_process_win32.py",
    "--ignore=IPython/utils/_process_win32_controller.py",
    "--ignore=IPython/utils/daemonize.py",
    "--ignore=IPython/utils/eventful.py",
    "--ignore=IPython/kernel",
    "--ignore=IPython/consoleapp.py",
    "--ignore=IPython/core/inputsplitter.py",
    "--ignore=IPython/lib/kernel.py",
    "--ignore=IPython/utils/jsonutil.py",
    "--ignore=IPython/utils/localinterfaces.py",
    "--ignore=IPython/utils/log.py",
    "--ignore=IPython/utils/signatures.py",
    "--ignore=IPython/utils/traitlets.py",
    "--ignore=IPython/utils/version.py"
 ]
 doctest_optionflags = [
    "NORMALIZE_WHITESPACE",
    "ELLIPSIS"
 ]
 ipdoctest_optionflags = [
    "NORMALIZE_WHITESPACE",
    "ELLIPSIS"
 ]
 asyncio_mode = "strict"
 
 [tool.pyright]
 pythonPlatform="All"
 
 [tool.setuptools]
 zip-safe = false
 platforms = ["Linux", "Mac OSX", "Windows"]
 license-files = ["LICENSE"]
 include-package-data = false
 
 [tool.setuptools.packages.find]
 exclude = ["setupext"]
 namespaces = false
 
 [tool.setuptools.package-data]
 "IPython" = ["py.typed"]
 "IPython.core" = ["profile/README*"]
 "IPython.core.tests" = ["*.png", "*.jpg", "daft_extension/*.py"]
 "IPython.lib.tests" = ["*.wav"]
 "IPython.testing.plugin" = ["*.txt"]
 
 [tool.setuptools.dynamic]
 version = {attr = "IPython.core.release.__version__"}