Donald Stufft schreef op 15-12-14 18:26:
On Dec 15, 2014, at 9:05 AM, Maurits van Rees <[email protected]>
wrote:
But I now run into unexpected behaviour when two packages have a constraint on the
same third package. For example one has 'zest.releaser==3.50' and another has
'zest.releaser>=3.40'. Wanted and expected behaviour is to get 3.50, as that
satisfies both constraints.
You can test this in a virtualenv with setuptools 8.0.2:
$ pip install 'zest.releaser==3.50,>=3.40'
Downloading/unpacking zest.releaser>=3.40,==3.50
Downloading zest.releaser-3.53.2.zip
...
So expected is 3.50, but you get the latest version, currently 3.53.2.
Sound like a bug?
Try with the develop version of pip. pip bundles setuptools internally in order
to prevent issues from setuptools accidentally getting uninstalled breaking pip
and such,
Ah, that works. Thanks.
(venv)mauritsvanrees@procyon:venv $ pip install
https://github.com/pypa/pip/tarball/develop#egg=pip-dev
Downloading/unpacking pip-dev from
https://github.com/pypa/pip/tarball/develop
...
Successfully installed pip-dev
Cleaning up...
(venv)mauritsvanrees@procyon:venv $ pip --version
pip 6.0.dev1 from
/Users/mauritsvanrees/tmp/venv/lib/python2.7/site-packages (python 2.7)
(venv)mauritsvanrees@procyon:venv $ pip install 'zest.releaser==3.50,>=3.40'
Collecting zest.releaser==3.50,>=3.40
Downloading zest.releaser-3.50.zip (124kB)
100% |################################| 126kB 1.1MB/s
Requirement already satisfied (use --upgrade to upgrade): setuptools in
./lib/python2.7/site-packages (from zest.releaser==3.50,>=3.40)
Installing collected packages: zest.releaser
Found existing installation: zest.releaser 3.53.2
Uninstalling zest.releaser:
Successfully uninstalled zest.releaser
Running setup.py install for zest.releaser
Skipping installation of
/Users/mauritsvanrees/tmp/venv/lib/python2.7/site-packages/zest/__init__.py
(namespace package)
Installing
/Users/mauritsvanrees/tmp/venv/lib/python2.7/site-packages/zest.releaser-3.50-py2.7-nspkg.pth
...
Successfully installed zest.releaser
--
Maurits van Rees: http://maurits.vanrees.org/
Zest Software: http://zestsoftware.nl
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