[Python-Dev] Unable to build old version from hg.python.org

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    Vinay> I want to maintain several working copies, as sometimes I have to
    Vinay> make bugfix changes across several revisions. Since we are
    Vinay> supposed to use forward-porting, I tried to set up a 2.5 clone,
    Vinay> but building from it fails with a "Fatal Python error: subversion
    Vinay> keywords missing".

I encountered the same problem.  My "solution" was to manually expand the
$HeadURL$ string at the top of posixmodule.c as it would have been expanded
by Subversion.  I then committed that locally.

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