py-pyobjc6: non-functional: update comments and claim maintainership

python/py-pyobjc6/Portfile

@@ -6,6 +6,7 @@ PortGroup           python 1.0
 
 # Pegged version for old systems.
 # https://github.com/ronaldoussoren/pyobjc/issues/587
+# The port is not going to be updated beyond maintenance and fix-ups.
 github.setup        ronaldoussoren pyobjc 6.2.2 v
 revision            1
 
@@ -17,7 +18,7 @@ github.tarball_from archive
 name                py-pyobjc6
 categories-append   devel
 license             MIT
-maintainers         nomaintainer
+maintainers         {@barracuda156 gmail.com:vital.had} openmaintainer
 platforms           {darwin < 11}
 description         Bidirectional bridge between Python and Objective C
 long_description    The PyObjC project aims to provide a bridge between \
@@ -34,6 +35,7 @@ homepage            https://pyobjc.readthedocs.io
 # for event 'builder-inited' threw an exception (exception: invalid mode: 'rU')
 # hello <sphinx.application.Sphinx object at 0x4420870>
 python.versions     38 39 310
+# Please refrain from dropping Python versions support here.
 
 # https://trac.macports.org/ticket/69728
 python.pep517       no
@@ -53,7 +55,9 @@ if {${name} ne ${subport}} {
                     patch-docs-conf.py.diff \
                     patch-install.py.diff
 
-    # Backport newer code from upstream:
+    # Backport newer code from upstream.
+    # Based on https://github.com/ronaldoussoren/pyobjc/commit/db2cdc8b2df25c1ef871534edd1ed97b1c89aa6e
+    # and https://github.com/ronaldoussoren/pyobjc/commit/2ae69be6c9b185417fa472f7a961771ae2600405
     patchfiles-append \
                     0001-Fix-obsolete-Python-API.patch