[reportlab-users] Installer needs a bit of help on 64 bit Windows Server

[Paul Keating]

I ran into a snag installing ReportLab 2.4 on a Windows Server 2003 Enterprise x64 edition, because the installer complained that it could not find Python in the registry.

This happens because registry calls from 32-bit programs to HKLM\Software get redirected to HKLM\Software\Wow6432Node. (Extended explanation in KB article 896459.)

I fixed this by manually copying the registry subtree HKLM\Software\Python to HKLM\Software\Wow6432Node\Python. (It would  probably have been enough to copy Python\PythonCore\2.6\InstallPath but I wasn't in a mood to play with it.)

Since there's nothing in the install but pure Python, I quite see that there doesn't need to be a separate 64-bit installer. There is a flag on RegOpenKeyEx that allows a 32-bit app to open a 64-bit registry key: KEY_WOW64_64KEY (http://msdn.microsoft.com/en-us/library/aa384129(VS.85).aspx). I don't know if distutils knows about it, though.

Regards
Paul Keating


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