On Wed, Aug 11, 2010 at 6:49 AM, Greg Troxel <[email protected]> wrote:
>
> From the pkgsrc point of view, I also would like to see this.
> Basically, I want to tell the build system: if anything you want isn't
> *already* provided, just fail and tell me.
Currently there is an option to "python setup.py install" named
"--single-version-externally-managed" which gives the behavior of just
not checking dependencies at all.
The behavior you're requesting: check dependencies but stop if they
aren't already satisfied instead of trying to satisfy them, could be
accomplished by first running install with
"--single-version-externally-managed" and then executing the resulting
"tahoe" script, for example, I uninstalled pyasn1 from my system and
then did the following:
$ python setup.py install --single-version-externally-managed
--prefix=targetinstalldir --record=/dev/null 1>/dev/null
$ cd targetinstalldir/
$ PYTHONPATH=lib/python2.6/site-packages ./bin/tahoe --version
Traceback (most recent call last):
File "./bin/tahoe", line 6, in <module>
from pkg_resources import load_entry_point
File
"/Library/Python/2.6/site-packages/distribute-0.6.13-py2.6.egg/pkg_resources.py",
line 2671, in <module>
working_set.require(__requires__)
File
"/Library/Python/2.6/site-packages/distribute-0.6.13-py2.6.egg/pkg_resources.py",
line 654, in require
needed = self.resolve(parse_requirements(requirements))
File
"/Library/Python/2.6/site-packages/distribute-0.6.13-py2.6.egg/pkg_resources.py",
line 552, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: pyasn1>=0.0.8a
Is that sufficient to satisfy the needs of the NetBSD and Ubuntu
packagers (Greg, Paul), or do you want something more?
Regards,
Zooko
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