Making a Python 2.7 package for OSGeo4W

Some rough notes for how I built a python 2.7 package.

Open a command shell and

set osgeo4w_root=c:\o4w_py27
apt.exe setup

:: to share cache with existing install 
:: and avoid needless downloads
copy c:\osgeo4w\etc\setup\last-cache %osgeo4w_root%\etc\setup\

:: install py25, then examine folder structure
apt install python

:: install py27 from standard msi installer (outside o4w)
start d:\dee\Downloads\Programming\python-2.7.1.msi

:: Manually compare c:\python27 to c:\o4w_py27\
:: then reflect the structure

xcopy /s c:\python27 C:\o4w_py27\apps\Python27
pushd %osgeo4w_root%
move apps\Python27\*.exe bin\

if exist %windir%\SysWOW64\python27.dll copy %windir%\SysWOW64\python27.dll bin\
if exist %windir%\System32\python27.dll copy %windir%\System32\python27.dll bin\

:: overwrite python shell batch file
:: (must be run from within bat file or the %% don't collapse properly to single %)
SET PYTHONHOME=%%OSGEO4W_ROOT%%\apps\Python27> etc\ini\python.bat

:: now create the package archive
7z a -ttar python-2.7.1-1.tar apps\Python27 bin\python*.exe bin\w9xpopen.exe bin\python27.dll etc\ini\python.bat
7z a -tbzip2 -mx9 -mmt=on python-2.7.1-1.tar.bz2 python-2.7.1-1.tar

Then