[Catalog-sig] What is the point of pythonpackages.com?
faassen at startifact.com
Mon Feb 6 16:32:59 CET 2012
On 02/05/2012 07:12 PM, Terry Reedy wrote:
> On 2/5/2012 8:37 AM, Kai Diefenbach wrote:
>> Why not? Packages, which are not hosted on PyPi suck.
> This is a technical discussion list, not a flame list.
> That comment is both wrong and unhelpful.
'suck' is not the right way to express the problem, and it's the
original poster's choice to host somewhere else, but it can indeed be
inconvenient to quite a few users of PyPI if a package is not hosted on
This because setuptools (and thus, easy_install, pip, buildout) for
better or for worse uses a "trawl the web" approach to find download
links, and multiple sites to download from create multiple potential
points of failure besides PyPI itself.
This makes setuptools work for a range of cases and that's nice, but
it's also a drawback, because on a fairly regular basis I at least have
had the issue that a package wasn't hosted on PyPI and that the site
hosting the package was suddenly down or had changed, breaking the
setuptools-based automatic download. If the package were hosted on PyPI
I wouldn't have had this issue, as PyPI itself is actually tolerably
reliable (especially with mirroring in place; but these external
packages are also not mirrored).
Of course the response I'll undoubtedly get is that I should host these
packages myself or include them in my version control system and all
that. And yes, I can do this, and sometimes I do. But doing that is in
this subjective user's opinion actually an inconvenience. Any 'pip' user
that installs a package from PyPI that has dependencies listed in
setup.py can run into this problem.
So the original poster could at least consider uploading their package
on PyPI to lessen his complaint. Besides the web UI, they'll find handy
tools available to help automate things, such as 'setup.py sdist upload'
and for more power, zest.releaser. But of course they can choose not to
do so at all too - that's the way things work .
 I suspect an alternate timeline in which setuptools had never done
this web trawling and would only download from PyPI would have lead to a
more pleasant situation for users, though I'm not sure: setuptools being
able to download dependencies might've retarded adoption of setuptools
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