1. fix: PYTHON_VERSION not set correctly
2. fix: PLIST_SUB used old definition of PYTHON_VERSION
3. fix: prefer PYTHON_DEFAULT over PYTHON2_DEFAULT
4. update: added slave ports for setuptools for pypy
5. update: tests at version 0.2.0 (test for (1) and (2))

1. fix: add pypyX-setuptools to Makefile's SUBDIR
2. fix: merge python.pypy.mk and python.cpython.mk into python.mk
3. feature: add checks to ensure supported version of Python (g)
4. feature: add consistency checks for Python implementation
5. test: update tests to 0.3.0

1. fix: _PYTHON_DEFAULT_VERSION from $LOCALBASE/bin/python (test updated)
2. fix: indentation of some blocks in python.mk
3. update: use of PYTHON_VERSION in Mk/Uses/(kde|zope).mk
4. update: changed default back to cpython
5. update: setting of PYTHON_VERSION in pyXY-${PORTNAME} ports
6. update: some uses of PYTHON_VERSION by ports

1. fix: kde's use of PYTHON_VERSION
2. fix: IGNORE warnings
3. fix: add missing autotranslations from (python)?X.Y -> cpythonX.Y

• fix: eliminate including python.mk in kde.mk

• fix: remove PYTHON_VERSION from autofix list (unbreak lang/python[23])
• fix: remove extra '}' from _DEPENDS arguments
• fix: checking _PYTHON_VERSION againsted supported versions
• test: check _DEPENDS

(I hope this works, I now have a joint git/svn tracking thing going)

devel/libclc: replace ${PYTHON_VERSION} with ${PYTHON_CMD}

USES=python: fix concurrent's default link.

• Fix the comparison of ${PYTHON_DEFAULT_VERSION} against ${_PYTHON_VERSION}. The latter needs the ${_PYTHON_IMPL} as prefix.

devel/libsoup: use USES=shebangfix instead of ${PYTHON_VERSION}

devel/py-gobject: pkg-plist doesn't use implementation specific name.

www/webkit-qt5: replace ${PYTHON_VERSION} with ${PYTHON_CMD}

• Remove 'python' from the PATH checks as we use the absolute path.

devel/libsearpc: doesn't use implementation specific install directory.

USES=python: update documentation for changes with PYTHON_VERSION.

USES=python: add PYTHON_LIB variable.

• Some ports need to know which library to link to.

devel/py-cxx: installs files in an implementation agnostic directory.

net-mgmt/ccnet: doesn't use implementation specific install directory.

sysutils/py-zfs: link against PYTHON_LIB instead of PYTHON_VERSION.

devel/newt: fix build with python

• use PYTHON_CMD instead of PYTHON_VERSION
• install python files into PYTHON_SITELIBDIR instead of manually constructed path (in Makefile.in)
• fix build location for python files (only a single version of python is supported, so no need for different directories per python version)

devel/pysvn: use PYTHON_VER instead of truncating PYTHON_VERSION

print/system-config-printer: remove redundant PYTHON_VER from PLIST_SUB

sysutils/condor: use PYTHON_INCLUDEDIR and PYTHON_LIB instead

• Switch from PYTHON_LIBRARY:FILEPATH to PYTHON_LIBRARIES. The later correctly links against the python library.

databases/metakit: specify python's include and sitelib via configure.

• the --with-python accepts the include and sitelib paths as a comma separated argument.
• modernise port with option helpers.

devel/py-ice: use PYTHON_LIB instead of PYTHON_VERSION.

• Define PYTHON(=PYTHON_CMD) in MAKE_ENV so that py-ice can detect the correct include headers.
• Override the library flags to point directly to PYTHON_LIB.

games/kiki: use correct PYTHON_ variables.

• Change patch to use PYTHON_INCLUEDIR instead of assumed path
• Change patch to use PYTHON_LIBDIR instead of assumed path
• Use PYTHON_VER instead of inferring it from PYTHON_VERSION
• Change patch to link directly against PYTHON_LIB

devel/py-ocempgui: use PYTHON_INCLUEDIR instead of inferring it from PYTHON_VERSION

mail/opensmtpd-extras-*-python: fix detection of python-config.

• Specify the prefix in which the python command can be found
• Get python command name from PYTHON_CMD instead of assuming it is PYTHON_VERSION

net-mgmt/seafile: fix use of PYTHON_VERSION

• use PYTHON_CMD where python is being invoked
• use PYTHON_VER instead of a implementation aware PYTHON_VERSION

graphics/py-ming: link directly to PYTHON_LIB

games/pykawari: link directly against PYTHON_LIB

math/qtiplot: link directly against PYTHON_LIB

cad/freecad: use implementation agnostic version

editors/libreoffice(4): use PYTHON_CMD instead of PYTHON_VERSION

www/uzbl: use PYTHON_CMD instead of PYTHON_VERSION

devel/gps: use PYTHON_LIBDIR instead of PYTHON_VERSION

USES=python: add PYTHON_ABIVER to PYTHON_LIB for cpython.

USES=python: fixes for fmake.

• fmake cannot compare against a constant (or for loop variable) on the left hand side.
• fmake cannot compare against two variables on the left hand side.

• feature: add 'pydepends' to add package building guard (i.e. IGNORE port if it's dependencies are not compatible with PYTHON_DEFAULT). This is auto-detected.
• fix: many uses of PYTHON_VERSION and other variables.

Update the package building guard, remove keyword.

Unfortunately this slows down ports that USES=python due to the requirement to accurately check the dependencies (it spawns a sub-make process).

I think, strongly, that having an automatic mechanism to add the package guard is useful (until poudriere gains the ability for multiple packages from a port). For example, if we switch to python3 as the default (or even if a user does this) then the automatic machanism will work nicely.

However, I don't want this change to delay this change and will happily:
a) drop the autodetection and go with 'py3depends' (note the name change), or
b) just fix the guards, in place.
(or c) accept, or quickly fix the existing auto-detect guard).

Which route should we take?