MacOS 10.9 install procedure 2015-02-01

On MacOS 10.9 with Homebrew freshly installed, these steps will prepare
the machine to run Confidant Mail.

brew install python
brew install wxPython
brew install openssl
brew install gpg
pip uninstall cryptography
pip install --global-option=build_ext \
  --global-option="-I/usr/local/Cellar/openssl/1.0.2/include" \
  --global-option=build_ext \
  --global-option="-L/usr/local/Cellar/openssl/1.0.2/lib" \
  cryptography
pip install twisted
pip install PyOpenSSL
pip install service_identity
pip install pyenchant

Afterward just download confmail-src.zip, unzip it, and run:
/usr/local/bin/python config_chooser.py

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MacOS Porting Notes by inglem 2015-01-26

Confidant Mail can be made to work on a Macintosh.

I do not have a Macintosh, and I do not have detailed knowledge of MacOS.
However, I was able to test the program on MacOS 10.9 with xcode 6.1.1 and
wxPython-3.0-osx-3.0.2.0-cocoa-py2.7.dmg, using the default python 2.7 and
gpg provided by Apple.

After I made minor changes to the configuration dialog to get it to work
(grep for "darwin"), the UI is functional if not pretty.

There is a more serious problem with OpenSSL. The version included is very
old, and does not support TLS 1.2, therefore the code as written will not
make TLS connections, and is unusable.

Next I tried Homebrew, using the python 2.7 and OpenSSL 1.0.2 provided.
I installed all the necessary components using brew and pip, and it almost
worked. The TLSv1_2_METHOD was failing mysteriously.

Here is the result of several hours of debugging: the python cryptography
library, by default, is linking against the headers of the system-provided
openssl (the old version), so even though python is dynamic-loading OpenSSL
v1.0.2 (as determined by "lsof" command), it does not know about the new
features such as TLS 1.2!

The fix is:
brew install openssl
pip uninstall cryptography
pip install --global-option=build_ext \
  --global-option="-I/usr/local/Cellar/openssl/1.0.2/include" \
  --global-option=build_ext \
  --global-option="-L/usr/local/Cellar/openssl/1.0.2/lib" \
  cryptography

Once this evil little bug is squashed, the program works fine.