Update infrastructure for new pythons and prep for latest sphinx

.github/workflows/tests.yml

@@ -19,32 +19,26 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-        sphinx: [""]  # Newest Sphinx (any)
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        sphinx: ["~=8.0"]  # temporary limit, bring it back to newest sphinx once we are sphinx9 compatible
         myst-parser: [""]  # Newest MyST Parser (any)
         include:
           # Just check the other platforms once
           - os: windows-latest
-            python-version: "3.12"
+            python-version: "3.13"
             sphinx: "~=8.0"
             myst-parser: "~=4.0"
             pillow: "==11.0.0"
           - os: macos-latest
-            python-version: "3.12"
+            python-version: "3.13"
             sphinx: "~=8.0"
             myst-parser: "~=4.0"
             pillow: "==11.0.0"
           - os: ubuntu-latest
-            python-version: "3.12"
+            python-version: "3.13"
             sphinx: "~=8.0"
             myst-parser: "~=4.0"
             pillow: "==11.0.0"
-          # Oldest known-compatible dependencies
-          - os: ubuntu-latest
-            python-version: "3.9"
-            sphinx: "==5.0.0"
-            myst-parser: "==1.0.0"
-            pillow: "==11.0.0"
           # Mid-range dependencies
           - os: ubuntu-latest
             python-version: "3.11"
@@ -53,8 +47,8 @@ jobs:
             pillow: "==11.0.0"
           # Newest known-compatible dependencies
           - os: ubuntu-latest
-            python-version: "3.12"
-            sphinx: "==8.0.2"
+            python-version: "3.13"
+            sphinx: "~=8.0"
             myst-parser: "==4.0.0"
             pillow: "==11.0.0"
 

myst_nb/_compat.py

@@ -1,7 +1,19 @@
+from typing import Any
+
 from docutils.nodes import Element
 
 
 def findall(node: Element):
     # findall replaces traverse in docutils v0.18
     # note a difference is that findall is an iterator
     return getattr(node, "findall", node.traverse)
+
+
+def get_env_app(env: Any):
+    """Return the Sphinx app without triggering deprecated accessors."""
+    # This is the new Sphinx app behavior
+    app = getattr(env, "_app", None)
+    if app is None:
+        # This was removed in Sphinx 9
+        app = env.app
+    return app

myst_nb/core/render.py

@@ -27,6 +27,7 @@
 from nbformat import NotebookNode
 from typing_extensions import Protocol
 
+from myst_nb._compat import get_env_app
 from myst_nb.core.config import NbParserConfig
 from myst_nb.core.execute import NotebookClientBase
 from myst_nb.core.loggers import LoggerType  # DEFAULT_LOG_TYPE,
@@ -405,7 +406,8 @@ def write_file(
                 # Can't get relative path between drives on Windows
                 return filepath.as_posix()
             # Path().relative_to() doesn't work when not a direct subpath
-            return "/" + os.path.relpath(filepath, self.renderer.sphinx_env.app.srcdir)
+            app = get_env_app(self.renderer.sphinx_env)
+            return "/" + os.path.relpath(filepath, app.srcdir)
         else:
             return str(filepath)
 

myst_nb/ext/download.py

@@ -5,6 +5,7 @@
 from sphinx.addnodes import download_reference
 from sphinx.util.docutils import ReferenceRole
 
+from myst_nb._compat import get_env_app
 from myst_nb.sphinx_ import SphinxEnvType
 
 
@@ -21,7 +22,7 @@ def run(self):
         reftarget = (
             path.as_posix()
             if os.name == "nt"
-            else ("/" + os.path.relpath(path, self.env.app.srcdir))
+            else ("/" + os.path.relpath(path, get_env_app(self.env).srcdir))
         )
         node = download_reference(self.rawtext, reftarget=reftarget)
         self.set_source_info(node)

myst_nb/ext/glue/crossref.py

@@ -21,7 +21,7 @@
 from sphinx.transforms.post_transforms import SphinxPostTransform
 from sphinx.util import logging as sphinx_logging
 
-from myst_nb._compat import findall
+from myst_nb._compat import findall, get_env_app
 from myst_nb.core.loggers import DEFAULT_LOG_TYPE
 from myst_nb.core.render import get_mime_priority
 from myst_nb.core.variables import format_plain_text
@@ -54,7 +54,8 @@ class ReplacePendingGlueReferences(SphinxPostTransform):
     def apply(self, **kwargs):
         """Apply the transform."""
         cache_folder = self.env.mystnb_config.output_folder  # type: ignore
-        bname = self.app.builder.name
+        app = get_env_app(self.env)
+        bname = app.builder.name
         priority_list = get_mime_priority(
             bname, self.config["nb_mime_priority_overrides"]
         )
@@ -79,7 +80,7 @@ def apply(self, **kwargs):
                     node,
                     output,
                     priority_list,
-                    self.app.builder,
+                    app.builder,
                     self.env,
                 )
 

myst_nb/sphinx_.py

@@ -25,7 +25,7 @@
 from sphinx.util import logging as sphinx_logging
 from sphinx.util.docutils import SphinxTranslator
 
-from myst_nb._compat import findall
+from myst_nb._compat import findall, get_env_app
 from myst_nb.core.config import NbParserConfig
 from myst_nb.core.execute import ExecutionResult, create_client
 from myst_nb.core.loggers import DEFAULT_LOG_TYPE, SphinxDocLogger
@@ -70,17 +70,20 @@ def parse(self, inputstring: str, document: nodes.document) -> None:
         :param inputstring: The source string to parse
         :param document: The root docutils node to add AST elements to
         """
-        assert self.env is not None, "env not set"
-        document_path = self.env.doc2path(self.env.docname)
+        env = getattr(document.settings, "env", None)
+        if env is None:
+            env = self.env
+        assert env is not None, "env not set"
+        document_path = env.doc2path(env.docname)
 
         # get a logger for this document
         logger = SphinxDocLogger(document)
 
         # get markdown parsing configuration
-        md_config: MdParserConfig = self.env.myst_config
+        md_config: MdParserConfig = env.myst_config
 
         # get notebook rendering configuration
-        nb_config: NbParserConfig = self.env.mystnb_config
+        nb_config: NbParserConfig = env.mystnb_config
 
         # create a reader for the notebook
         nb_reader = create_nb_reader(document_path, md_config, nb_config, inputstring)
@@ -159,13 +162,11 @@ def parse(self, inputstring: str, document: nodes.document) -> None:
 
         # save final execution data
         if nb_client.exec_metadata:
-            NbMetadataCollector.set_exec_data(
-                self.env, self.env.docname, nb_client.exec_metadata
-            )
+            NbMetadataCollector.set_exec_data(env, env.docname, nb_client.exec_metadata)
             if nb_client.exec_metadata["traceback"]:
                 # store error traceback in outdir and log its path
-                reports_file = Path(self.env.app.outdir).joinpath(
-                    "reports", *(self.env.docname + ".err.log").split("/")
+                reports_file = Path(get_env_app(env).outdir).joinpath(
+                    "reports", *(env.docname + ".err.log").split("/")
                 )
                 reports_file.parent.mkdir(parents=True, exist_ok=True)
                 reports_file.write_text(
@@ -177,7 +178,7 @@ def parse(self, inputstring: str, document: nodes.document) -> None:
                 )
 
         # write final (updated) notebook to output folder (utf8 is standard encoding)
-        path = self.env.docname.split("/")
+        path = env.docname.split("/")
         ipynb_path = path[:-1] + [path[-1] + ".ipynb"]
         content = nbformat.writes(notebook).encode("utf-8")
         nb_renderer.write_file(ipynb_path, content, overwrite=True)
@@ -193,16 +194,14 @@ def parse(self, inputstring: str, document: nodes.document) -> None:
                 overwrite=True,
             )
             NbMetadataCollector.set_doc_data(
-                self.env, self.env.docname, "glue", list(nb_client.glue_data.keys())
+                env, env.docname, "glue", list(nb_client.glue_data.keys())
             )
 
         # move some document metadata to environment metadata,
         # so that we can later read it from the environment,
         # rather than having to load the whole doctree
         for key, (uri, kwargs) in document.attributes.pop("nb_js_files", {}).items():
-            NbMetadataCollector.add_js_file(
-                self.env, self.env.docname, key, uri, kwargs
-            )
+            NbMetadataCollector.add_js_file(env, env.docname, key, uri, kwargs)
 
         # remove temporary state
         document.attributes.pop("nb_renderer")
@@ -325,7 +324,7 @@ def run(self, **kwargs: Any) -> None:
         """Run the transform."""
         # get priority list for this builder
         # TODO allow for per-notebook/cell priority dicts?
-        bname = self.app.builder.name
+        bname = get_env_app(self.env).builder.name
         priority_list = get_mime_priority(
             bname, self.config["nb_mime_priority_overrides"]
         )

myst_nb/warnings_.py

@@ -90,7 +90,7 @@ def create_warning(
     # otherwise we will use the configuration set by docutils
     suppress_warnings: Sequence[str] = []
     try:
-        suppress_warnings = document.settings.env.app.config.suppress_warnings
+        suppress_warnings = document.settings.env.config.suppress_warnings
     except AttributeError:
         suppress_warnings = document.settings.myst_suppress_warnings or []
     if _is_suppressed_warning(wtype, subtype.value, suppress_warnings):

pyproject.toml

@@ -16,7 +16,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -34,7 +33,7 @@ keywords = [
     "docutils",
     "sphinx",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "importlib_metadata",
     "ipython",
@@ -43,7 +42,7 @@ dependencies = [
     "myst-parser>=1.0.0",
     "nbformat>=5.0",
     "pyyaml",
-    "sphinx>=5",
+    "sphinx>=5,<9",  # If we get bugs for older versions, just pin this higher
     "typing-extensions",
     # ipykernel is not a requirement of the library,
     # but is a common requirement for users (registers the python3 kernel)
@@ -97,7 +96,7 @@ testing = [
     "ipywidgets>=8",
     "jupytext>=1.11.2",
     # Matplotlib outputs are sensitive to the matplotlib version
-    "matplotlib==3.7.*",
+    "matplotlib==3.10.*",
     "nbdime",
     "numpy",
     "pandas",
@@ -175,6 +174,10 @@ filterwarnings = [
     'ignore:datetime.datetime.utcnow\(\) is deprecated:DeprecationWarning:jupyter_cache',
     # From matplotlib’s dependencies
     'ignore::DeprecationWarning:pyparsing',  # imports deprecated `sre_constants`
+    # From myst-parser on Sphinx 9
+    'ignore:.*MystReferenceResolver.app.*:DeprecationWarning',
+    # Upstream myst-parser still hits env.app deprecations under Sphinx 9
+    'ignore:.*env\\.app.*:DeprecationWarning:myst_parser',
     # Windows issues, some may need to be fixed in MyST-NB, others are upstream
     'ignore:Proactor event loop does not implement add_reader:RuntimeWarning:zmq',
 ]

tests/conftest.py

@@ -21,6 +21,7 @@
 from sphinx.util.console import nocolor
 
 pytest_plugins = "sphinx.testing.fixtures"
+LATEST_SPHINX_MAJOR = 9
 
 # -Diff Configuration-#
 NB_VERSION = 4
@@ -100,7 +101,9 @@ def invalidate_files(self):
     def get_resolved_doctree(self, docname=None):
         """Load and return the built docutils.document, after post-transforms."""
         docname = docname or self.files[0]
-        doctree = self.env.get_and_resolve_doctree(docname, self.app.builder)
+        doctree = self.env.get_and_resolve_doctree(
+            docname, self.app.builder, tags=self.app.builder.tags
+        )
         doctree["source"] = docname
         return doctree
 
@@ -287,6 +290,9 @@ def _func(doctree):
 # alternatively the resolution of https://github.com/ESSS/pytest-regressions/issues/32
 @pytest.fixture()
 def file_regression(file_regression):
+    # Only run regression tests on the latest Sphinx since minor document changes will cause these to break otherwise
+    if sphinx_version_info[0] < LATEST_SPHINX_MAJOR:
+        pytest.skip("file-regression checks run only on the latest Sphinx")
     return FileRegression(file_regression)
 
 

tests/test_execute/test_allow_errors_auto.ipynb

@@ -19,10 +19,10 @@
      "evalue": "oopsie!",
      "output_type": "error",
      "traceback": [
-      "\u001B[0;31m---------------------------------------------------------------------------\u001B[0m",
-      "\u001B[0;31mException\u001B[0m                                 Traceback (most recent call last)",
-      "Cell \u001B[0;32mIn[1], line 1\u001B[0m\n\u001B[0;32m----> 1\u001B[0m \u001B[38;5;28;01mraise\u001B[39;00m \u001B[38;5;167;01mException\u001B[39;00m(\u001B[38;5;124m\"\u001B[39m\u001B[38;5;124moopsie!\u001B[39m\u001B[38;5;124m\"\u001B[39m)\n",
-      "\u001B[0;31mException\u001B[0m: oopsie!"
+      "\u001b[31m---------------------------------------------------------------------------\u001b[39m",
+      "\u001b[31mException\u001b[39m                                 Traceback (most recent call last)",
+      "\u001b[36mCell\u001b[39m\u001b[36m \u001b[39m\u001b[32mIn[1]\u001b[39m\u001b[32m, line 1\u001b[39m\n\u001b[32m----> \u001b[39m\u001b[32m1\u001b[39m \u001b[38;5;28;01mraise\u001b[39;00m \u001b[38;5;167;01mException\u001b[39;00m(\u001b[33m\"\u001b[39m\u001b[33moopsie!\u001b[39m\u001b[33m\"\u001b[39m)\n",
+      "\u001b[31mException\u001b[39m: oopsie!"
      ]
     }
    ],
@@ -47,7 +47,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.13.11"
   },
   "test_name": "notebook1"
  },

tests/test_execute/test_allow_errors_cache.ipynb

@@ -19,10 +19,10 @@
      "evalue": "oopsie!",
      "output_type": "error",
      "traceback": [
-      "\u001B[0;31m---------------------------------------------------------------------------\u001B[0m",
-      "\u001B[0;31mException\u001B[0m                                 Traceback (most recent call last)",
-      "Cell \u001B[0;32mIn[1], line 1\u001B[0m\n\u001B[0;32m----> 1\u001B[0m \u001B[38;5;28;01mraise\u001B[39;00m \u001B[38;5;167;01mException\u001B[39;00m(\u001B[38;5;124m\"\u001B[39m\u001B[38;5;124moopsie!\u001B[39m\u001B[38;5;124m\"\u001B[39m)\n",
-      "\u001B[0;31mException\u001B[0m: oopsie!"
+      "\u001b[31m---------------------------------------------------------------------------\u001b[39m",
+      "\u001b[31mException\u001b[39m                                 Traceback (most recent call last)",
+      "\u001b[36mCell\u001b[39m\u001b[36m \u001b[39m\u001b[32mIn[1]\u001b[39m\u001b[32m, line 1\u001b[39m\n\u001b[32m----> \u001b[39m\u001b[32m1\u001b[39m \u001b[38;5;28;01mraise\u001b[39;00m \u001b[38;5;167;01mException\u001b[39;00m(\u001b[33m\"\u001b[39m\u001b[33moopsie!\u001b[39m\u001b[33m\"\u001b[39m)\n",
+      "\u001b[31mException\u001b[39m: oopsie!"
      ]
     }
    ],
@@ -47,7 +47,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.13.11"
   },
   "test_name": "notebook1"
  },

tests/test_execute/test_basic_failing_auto.ipynb

@@ -19,10 +19,10 @@
      "evalue": "oopsie!",
      "output_type": "error",
      "traceback": [
-      "\u001B[0;31m---------------------------------------------------------------------------\u001B[0m",
-      "\u001B[0;31mException\u001B[0m                                 Traceback (most recent call last)",
-      "Cell \u001B[0;32mIn[1], line 1\u001B[0m\n\u001B[0;32m----> 1\u001B[0m \u001B[38;5;28;01mraise\u001B[39;00m \u001B[38;5;167;01mException\u001B[39;00m(\u001B[38;5;124m\"\u001B[39m\u001B[38;5;124moopsie!\u001B[39m\u001B[38;5;124m\"\u001B[39m)\n",
-      "\u001B[0;31mException\u001B[0m: oopsie!"
+      "\u001b[31m---------------------------------------------------------------------------\u001b[39m",
+      "\u001b[31mException\u001b[39m                                 Traceback (most recent call last)",
+      "\u001b[36mCell\u001b[39m\u001b[36m \u001b[39m\u001b[32mIn[1]\u001b[39m\u001b[32m, line 1\u001b[39m\n\u001b[32m----> \u001b[39m\u001b[32m1\u001b[39m \u001b[38;5;28;01mraise\u001b[39;00m \u001b[38;5;167;01mException\u001b[39;00m(\u001b[33m\"\u001b[39m\u001b[33moopsie!\u001b[39m\u001b[33m\"\u001b[39m)\n",
+      "\u001b[31mException\u001b[39m: oopsie!"
      ]
     }
    ],
@@ -47,7 +47,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.13.11"
   },
   "test_name": "notebook1"
  },

tests/test_execute/test_basic_failing_cache.ipynb

@@ -19,10 +19,10 @@
      "evalue": "oopsie!",
      "output_type": "error",
      "traceback": [
-      "\u001B[0;31m---------------------------------------------------------------------------\u001B[0m",
-      "\u001B[0;31mException\u001B[0m                                 Traceback (most recent call last)",
-      "Cell \u001B[0;32mIn[1], line 1\u001B[0m\n\u001B[0;32m----> 1\u001B[0m \u001B[38;5;28;01mraise\u001B[39;00m \u001B[38;5;167;01mException\u001B[39;00m(\u001B[38;5;124m\"\u001B[39m\u001B[38;5;124moopsie!\u001B[39m\u001B[38;5;124m\"\u001B[39m)\n",
-      "\u001B[0;31mException\u001B[0m: oopsie!"
+      "\u001b[31m---------------------------------------------------------------------------\u001b[39m",
+      "\u001b[31mException\u001b[39m                                 Traceback (most recent call last)",
+      "\u001b[36mCell\u001b[39m\u001b[36m \u001b[39m\u001b[32mIn[1]\u001b[39m\u001b[32m, line 1\u001b[39m\n\u001b[32m----> \u001b[39m\u001b[32m1\u001b[39m \u001b[38;5;28;01mraise\u001b[39;00m \u001b[38;5;167;01mException\u001b[39;00m(\u001b[33m\"\u001b[39m\u001b[33moopsie!\u001b[39m\u001b[33m\"\u001b[39m)\n",
+      "\u001b[31mException\u001b[39m: oopsie!"
      ]
     }
    ],
@@ -47,7 +47,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.13.11"
   },
   "test_name": "notebook1"
  },