Thomas Heller wrote:

I have a possible solution for this problem.

(I'll use the name INSTALLPATH for installation directory stored in the registry under the key HKEY_LOCAL_MACHINE\Software\Python\PythonCore\<version>\InstallPath).

The bdist_wininst installer at _install_ time sets the PYTHONHOME environment variable to INSTALLPATH, then loads the python dll and retrieves the 'extinstallpath' attribute from the sys module:

wwsprintf(buffer, "PYTHONHOME=%s", INSTALLPATH); _putenv(buffer); Py_SetProgramName(modulename); Py_Initialize(); pextinstallpath = PySys_GetObject("extinstallpath"); Py_Finalize();

If this is successful, the (string contents of) pextinstallpath is appended to INSTALLPATH, and that will be the directory where the package will be installed. If unsuccessful, INSTALLPATH will be used as before.

Sounds OK.

I'm unsure about the change to site.py, but this should work:

diff -c -r1.26 site.py *** site.py 2001/03/23 17:53:49 1.26 --- site.py 2001/07/13 15:32:27 *************** *** 140,153 **** "python" + sys.version[:3], "site-packages"), makepath(prefix, "lib", "site-python")] - elif os.sep == ':': - sitedirs = [makepath(prefix, "lib", "site-packages")] else: ! sitedirs = [prefix] for sitedir in sitedirs: if os.path.isdir(sitedir): addsitedir(sitedir)

# Define new built-ins 'quit' and 'exit'. # These are simply strings that display a hint on how to exit. if os.sep == ':': --- 140,154 ---- "python" + sys.version[:3], "site-packages"), makepath(prefix, "lib", "site-python")] else: ! sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")] for sitedir in sitedirs: if os.path.isdir(sitedir): addsitedir(sitedir)

+ if os.sep == '\\': + sys.extinstallpath = os.path.join(sys.prefix, "lib", "site-packages") +

Why not do this for all platforms (which support site-packages) ? -- Marc-Andre Lemburg CEO eGenix.com Software GmbH ______________________________________________________________________ Consulting & Company: http://www.egenix.com/ Python Software: http://www.lemburg.com/python/