Converting old py3-only ports to new-style

We have a number of older ports for py3-only Python modules from before
the simpler "FLAVOR=python3" setup that we're using now.

Here's an example of a conversion:

- change ../Makefile to add ,python3

- bump REVISION

- set FLAVOR/FLAVORS = python3, remove MODPY_VERSION = ${MODPY_DEFAULT_VERSION_3}

- add @pkgpath so that the new package is considered as a candidate to replace
the unflavoured version

- bump REVISION and add ${MODPY_FLAVOR} to all ports depending on the one you
are switching

- ...and since I'm there anyway, use https for HOMEPAGE

Index: databases/Makefile
===================================================================
RCS file: /cvs/ports/databases/Makefile,v
retrieving revision 1.390
diff -u -p -r1.390 Makefile
--- databases/Makefile 27 Feb 2020 18:10:24 -0000 1.390
+++ databases/Makefile 29 Feb 2020 16:01:00 -0000
@@ -163,7 +163,7 @@
SUBDIR += py-ldap,python3
SUBDIR += py-ldap3
SUBDIR += py-ldap3,python3
- SUBDIR += py-minidb
+ SUBDIR += py-minidb,python3
SUBDIR += py-mongo
SUBDIR += py-mongo,python3
SUBDIR += py-mysql
Index: databases/py-minidb/Makefile
===================================================================
RCS file: /cvs/ports/databases/py-minidb/Makefile,v
retrieving revision 1.8
diff -u -p -r1.8 Makefile
--- databases/py-minidb/Makefile 8 Nov 2019 14:48:10 -0000 1.8
+++ databases/py-minidb/Makefile 29 Feb 2020 16:01:00 -0000
@@ -5,11 +5,11 @@ COMMENT = simple SQLite3 store for Pyth
MODPY_EGG_VERSION = 2.0.2
DISTNAME = minidb-${MODPY_EGG_VERSION}
PKGNAME = py-minidb-${MODPY_EGG_VERSION}
-REVISION = 0
+REVISION = 1

CATEGORIES = databases

-HOMEPAGE = http://thp.io/2010/minidb/
+HOMEPAGE = https://thp.io/2010/minidb/

# BSD
PERMIT_PACKAGE = Yes
@@ -18,6 +18,7 @@ MODULES = lang/python
MODPY_PI = Yes
MODPY_PYTEST = Yes

-MODPY_VERSION = ${MODPY_DEFAULT_VERSION_3}
+FLAVORS = python3
+FLAVOR = python3

.include <bsd.port.mk>
Index: databases/py-minidb/pkg/PLIST
===================================================================
RCS file: /cvs/ports/databases/py-minidb/pkg/PLIST,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 PLIST
--- databases/py-minidb/pkg/PLIST 1 Nov 2016 13:20:10 -0000 1.1.1.1
+++ databases/py-minidb/pkg/PLIST 29 Feb 2020 16:01:00 -0000
@@ -1,4 +1,5 @@
@comment $OpenBSD: PLIST,v 1.1.1.1 2016/11/01 13:20:10 rpe Exp $
+@pkgpath databases/py-minidb
${MODPY_COMMENT}lib/python${MODPY_VERSION}/site-packages/${MODPY_PYCACHE}/
lib/python${MODPY_VERSION}/site-packages/${MODPY_PYCACHE}minidb.${MODPY_PYC_MAGIC_TAG}pyc
lib/python${MODPY_VERSION}/site-packages/minidb-${MODPY_EGG_VERSION}-py${MODPY_VERSION}.egg-info
Index: www/urlwatch/Makefile
===================================================================
RCS file: /cvs/ports/www/urlwatch/Makefile,v
retrieving revision 1.25
diff -u -p -r1.25 Makefile
--- www/urlwatch/Makefile 3 Jun 2019 16:06:58 -0000 1.25
+++ www/urlwatch/Makefile 29 Feb 2020 16:01:00 -0000
@@ -4,7 +4,7 @@ COMMENT= monitor webpages for updates

MODPY_EGG_VERSION= 2.17
DISTNAME= urlwatch-${MODPY_EGG_VERSION}
-REVISION= 0
+REVISION= 1

CATEGORIES= www

@@ -23,7 +23,7 @@ MODPY_SETUPTOOLS= Yes

BUILD_DEPENDS= ${RUN_DEPENDS}
RUN_DEPENDS= converters/py-html2text${MODPY_FLAVOR} \
- databases/py-minidb \
+ databases/py-minidb${MODPY_FLAVOR} \
devel/py-appdirs${MODPY_FLAVOR} \
security/py-keyring${MODPY_FLAVOR} \
textproc/py-cssselect${MODPY_FLAVOR} \