Handle the TypeVar for format checker callables.

Mostly follows sphinx-doc/sphinx#10785

2 files changed, 30 insertions, 0 deletions

diff --git a/docs/api/jsonschema/index.rst b/docs/api/jsonschema/index.rst
index 21ba070..ebf4c8a 100644
--- a/docs/api/jsonschema/index.rst
+++ b/docs/api/jsonschema/index.rst
@@ -17,3 +17,6 @@ Package summary
 .. automodule:: jsonschema
    :members:
    :imported-members:
+
+
+.. autodata:: jsonschema._format._F
diff --git a/docs/conf.py b/docs/conf.py
index 3f1f4a9..d691aaf 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -36,6 +36,33 @@ pygments_dark_style = "one-dark"
 
 html_theme = "furo"
 
+# See sphinx-doc/sphinx#10785
+_TYPE_ALIASES = {
+    "jsonschema._format._F",  # format checkers
+}
+
+
+def _resolve_type_aliases(app, env, node, contnode):
+    if (
+        node["refdomain"] == "py"
+        and node["reftype"] == "class"
+        and node["reftarget"] in _TYPE_ALIASES
+    ):
+        return app.env.get_domain("py").resolve_xref(
+            env,
+            node["refdoc"],
+            app.builder,
+            "data",
+            node["reftarget"],
+            node,
+            contnode,
+        )
+
+
+def setup(app):
+    app.connect("missing-reference", _resolve_type_aliases)
+
+
 # = Builders =
 
 doctest_global_setup = """