The m2r project is dead upstream. The only DEP on it is coming from 
py-automat, although that project removed the dependency on m2r years ago. 
We just didn't remove the BDEP from the port.

ok on the below? And ok to remove the py-m2r port as well?

Once m2r is removed we can update mistune to version 2.0.3. And we 
need that update so the jupyter stack can be updated.


Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/py-automat/Makefile,v
diff -u -p -u -r1.16 Makefile
--- Makefile	18 Jan 2023 12:34:58 -0000	1.16
+++ Makefile	5 Feb 2024 03:11:20 -0000
@@ -4,6 +4,7 @@ MODPY_EGG_VERSION =	22.10.0
 
 DISTNAME =		Automat-${MODPY_EGG_VERSION}
 PKGNAME =		py-automat-${MODPY_EGG_VERSION}
+REVISION =		0
 
 CATEGORIES =		devel
 
@@ -17,7 +18,6 @@ MODPY_PI =		Yes
 MODPY_PYBUILD =		setuptools_scm
 #MODPY_PYTEST_ARGS =	lib/automat/_test/
 
-BUILD_DEPENDS =		textproc/py-m2r${MODPY_FLAVOR}
 RUN_DEPENDS =		devel/py-attrs${MODPY_FLAVOR} \
 			devel/py-six${MODPY_FLAVOR}