Depend on ipython-pygments-lexers for pygments lexers

Author: takluyver

IPython/lib/lexers.py

@@ -4,7 +4,7 @@
 """
 
 from sphinx import highlighting
-from IPython.lib.lexers import IPyLexer
+from ipython_pygments_lexers import IPyLexer
 
 def setup(app):
     """Setup as a sphinx extension."""
@@ -20,9 +20,7 @@ def setup(app):
 # Alternatively, we could register the lexer with pygments instead. This would
 # require using setuptools entrypoints: http://pygments.org/docs/plugins
 
-ipy2 = IPyLexer(python3=False)
-ipy3 = IPyLexer(python3=True)
+ipy3 = IPyLexer()
 
-highlighting.lexers['ipython'] = ipy2
-highlighting.lexers['ipython2'] = ipy2
+highlighting.lexers['ipython'] = ipy3
 highlighting.lexers['ipython3'] = ipy3

IPython/lib/tests/test_lexers.py

@@ -37,8 +37,6 @@
         r"\.lib\.inputhook.+",
         r"\.ipdoctest",
         r"\.testing\.plugin",
-        # Backwards compat import for lib.lexers
-        r"\.nbconvert\.utils\.lexers",
         # We document this manually.
         r"\.utils\.py3compat",
         # These are exposed in display

IPython/lib/tests/test_pygments.py

@@ -16,6 +16,5 @@ Developer's guide for third party tools and libraries
    how_ipython_works
    wrapperkernels
    execution
-   lexer
    config
    inputhook_app

IPython/sphinxext/ipython_console_highlighting.py

@@ -24,6 +24,7 @@ requires-python = ">=3.11"
 dependencies = [
     'colorama; sys_platform == "win32"',
     "decorator",
+    "ipython-pygments-lexers",
     "jedi>=0.16",
     "matplotlib-inline",
     'pexpect>4.3; sys_platform != "win32" and sys_platform != "emscripten"',
@@ -35,11 +36,6 @@ dependencies = [
 ]
 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"