On Fri, May 28, 2010 at 9:14 PM, P.J. Eby <[email protected]> wrote:
> At 08:00 PM 5/28/2010 +0200, cool-RR wrote: > >> On Fri, May 28, 2010 at 7:44 PM, P.J. Eby <<mailto:[email protected]> >> [email protected]> wrote: >> At 02:53 AM 5/28/2010 +0200, cool-RR wrote: >> >> On Fri, May 28, 2010 at 2:36 AM, P.J. Eby <<mailto:[email protected] >> ><mailto:[email protected]>[email protected]> wrote: >> However, as long as both versions alert the user when used on the wrong >> Python version, they will quickly discover their mistake. ;-) >> >> Yes, I thought about this too. You suggest doing that on the setup script, >> the package itself, or both? >> >> >> The package itself; doing it in the setup script is ridiculously hard. >> (Not detecting the Python version, but detecting whether you're installing >> both versions to the same location.) >> >> >> I'm not sure we're on the same page here. My intention is that Python 2.x >> users will use only `garlicsim`, and Python 3.x users will use only >> `garlicsim_py3`. >> > > But both projects will contain a package named 'garlicsim' - so if they're > installed to the same location, then either one will overwrite the other > (distutils/pip install) or override the other (setuptools). > > In principle, they won't be installed to the same location, unless somebody > has a directory that's used for both Python 2 packages and Python 3 packages > -- and if they do that, they'll have other problems. (i.e., they shouldn't > be doing it) > > > > Why would I want to detect anything beyond the Python version in the >> setup script? >> > > Even though you detect the version in the setup script, it won't stop the > problem of installing both versions to the same location. That's why the > package itself needs to give a good error message if imported from the wrong > Python version, to handle the case where somebody's sys.path is wrong (e.g. > due to a PYTHONPATH that includes both Python 2 and 3 packages). > > Again, people are going to have other problems if they do that, unrelated > to your package. Putting in the check is just a courtesy measure so they > don't have to spend a lot of time figuring out what they did wrong. > Okay. Thanks for the tips, I'll put version checks in both the setup scripts and the packages. Ram.
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