Use antsibull-nox for CI. (#361)

noxfile.py

@@ -0,0 +1,50 @@
+
+# The following metadata allows Python runners and nox to install the required
+# dependencies for running this Python script:
+#
+# /// script
+# dependencies = ["nox>=2025.02.09", "antsibull-nox"]
+# ///
+
+import os
+import sys
+
+import nox
+
+
+# We try to import antsibull-nox, and if that doesn't work, provide a more useful
+# error message to the user.
+try:
+    import antsibull_nox
+except ImportError:
+    print("You need to install antsibull-nox in the same Python environment as nox.")
+    sys.exit(1)
+
+
+IN_CI = os.environ.get("CI") == "true"
+
+
+antsibull_nox.load_antsibull_nox_toml()
+
+
+@nox.session(name="update-docs", default=True)
+def update_docs_fragments(session: nox.Session) -> None:
+    """
+    Update/check auto-generated parts of docs fragments.
+    """
+    session.install("ansible-core")
+    prepare = antsibull_nox.sessions.prepare_collections(
+        session, install_in_site_packages=True
+    )
+    if not prepare:
+        return
+    data = ["python", "tests/update-docs.py"]
+    if IN_CI:
+        data.append("--lint")
+    session.run(*data)
+
+
+# Allow to run the noxfile with `python noxfile.py`, `pipx run noxfile.py`, or similar.
+# Requires nox >= 2025.02.09
+if __name__ == "__main__":
+    nox.main()