system Python site-packages directory, to sys.path for macOS framework builds.
The coupling between the two Python instances often caused confusion and, as
of macOS 10.12, changes to the site-packages layout can cause pip component
installations to fail. This change reverts the effects introduced in 2.7.0
by Issue #4865. If you are using a package with both the Apple system Python
2.7 and a user-installed Python 2.7, you will need to ensure that copies of
the package are installed with both Python instances.
Among other issues, the Apple-supplied 0.9.7 libs for the 10.5 ABI cannot
verify newer SHA-256 certs as now used by python.org services. Document
in the installer ReadMe some of the certificate management issues that
users now need to be more concerned with due to PEP 476's enabling cert
verification by default. For now, continue to use the Apple-supplied
0.9.8 libs for the 10.6+ installer since they use Apple private APIs to
verify certificates using the system- and user-managed CA keychain stores.
As of 2.7.8, the 32-bit-only installer will support OS X 10.5
and later systems as is currently done for Python 3.x installers.
For 2.7.7 only, we will provide three installers:
the legacy deprecated 10.3+ 32-bit-only format;
the newer 10.5+ 32-bit-only format;
and the unchanged 10.6+ 64-/32-bit format.
Although binary installers will no longer be available from
python.org as of 2.7.8, it will still be possible to build from
source on 10.3.9 and 10.4 systems if necessary.
Some third-party projects, such as matplotlib and PIL/Pillow,
depended on being able to build with Tcl and Tk frameworks in
/Library/Frameworks. They were unable to build with the built-in
Tcl/Tk and/or execute correctly.
64-bit/32-bit installer for 10.6+. It is no longer necessary
to install a third-party version of Tcl/Tk 8.5 to work around the
problems in the Apple-supplied Tcl/Tk 8.5 shipped in OS X 10.6
and later releases.
svn+ssh://pythondev@svn.python.org/python/branches/py3k
........
r88003 | ned.deily | 2011-01-14 20:37:12 -0800 (Fri, 14 Jan 2011) | 5 lines
#10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5,
rather than the currently problematic Apple-supplied one,
when running with the 64-/32-bit installer variant.
........
This introduces a new configure option: --with-framework-name=NAME
(defaulting to 'Python'). This allows you to install several copies
of the Python framework with different names (such as a normal build
and a debug build).
