On 05/07/2012 03:52 AM, "Martin v. Löwis" wrote:
3) Symlink the interpreter rather than copying. I include this here for
the sake of completeness, but it's already been rejected due to
significant problems on older Windows' and OS X.
That sounds the right solution to me. PEP 405 specifies that bin/python3
exists, but not that it is the actual Python interpreter binary that is
normally used. For each target system, a solution should be defined that
allows in-place updates of Python that also update all venvs automatically.
I propose that for Windows, that solution is to have a new enough
version of Windows and the necessary privileges, and use the --symlink
option to the pyvenv script, or else to manually update venvs using
pyvenv --upgrade.
For example, for Windows, it would be sufficient to just have the
executable in bin/, as the update will only affect pythonXY.dll.
That executable may be different from the regular python.exe, and
it might be necessary that it locates its Python installation first.
This sounds to me like a level of complexity unwarranted by the severity
of the problem, especially when considering the additional burden it
imposes on alternative Python implementations.
Carl
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