On Sun, 2020-05-10 at 12:39 -0400, Doug Hellmann wrote: > The PyPA team is working on a new resolver for pip. As part of that work, they have had some questions about the way > OpenStack uses the constraints feature. They’ve been great about taking input, and prometheanfire has been doing some > testing to ensure the new work doesn’t break compatibility [1] (thanks Matthew!). > > There is a new question from the pip maintainers about whether constraints need to support “nameless” entries (by > referring to a URL in a constraints file instead of using package names) [2]. I don’t see anything in the upper- > constraints.txt that looks like a URL, but I don’t know how teams might be configuring their lower-constraints.txt or > whether we do anything in devstack to munge the constraints list to point to local packages as part of LIBS_FROM_GIT > handling. > > Is anyone aware of any uses of URLs in constraints files anywhere within OpenStack? yes we sometimes have urls to git repos. they are not in constraits files but the are in test-requiremente or requirements.txt its not the best example but networking-ovs-dpdk has neutron for several reasons https://opendev.org/x/networking-ovs-dpdk/src/branch/master/test-requirements.txt#L14 -e git+https://github.com/openstack/neutron.git@master#egg=neutron in that url i have @master which can be a brach,tag or commit so you could use the same to tack an unreleased version fo an external depncy in a constraits file. im not sure if we require this for anythign i know in white box we had to also use the url syntax cor crundini and iniparse because the python 3 version were not released on pypi yet https://opendev.org/x/whitebox-tempest-plugin/commit/3ef1dded7d18eeec48e75c715df73da09237c965 if it was not packaged on pypi ever and we supported lower constratins... then i can see us using git+https://github.com/pixelb/crudini.git@0.9.3#egg=crudini to be our lower constraint. right now we are installing master as they still have not pushed 0.9.3 to pypi https://github.com/pixelb/crudini/issues/58 this is the only why i think it would be useful to have support for the urls in constraits. > Doug > > [1] https://review.opendev.org/#/c/726186/ > [2] https://github.com/pypa/pip/issues/8210 >