On 04/19/2016 04:48 AM, Thierry Carrez wrote: > Thomas Goirand wrote: >> [...] >> Remember that in distros, there's only a single version of a library at >> any given time, at the exception of transitions (yes, in Red Hat it's >> technically possible to install multiple versions, but the policy >> strongly advocates against this). > > Depends on the distro. Gentoo for example lets you have multiple > versions of libraries installed at any given time.
For ruby or c-libs where the language allows that sure, but not for python where it isn't generally allowed. >> [...] > I say "old", since with the advent of containers this limitation is > slowly going away. Ubuntu supports snappy packaging for container-based > packages, for example. They could totally package OpenStack that way if > they wanted. I expect in the future the one-version-of-lib-at-a-time > will more and more be seen as a self-imposed limitation and less as a > distribution axiom, and next-generation distros will appear that will > solve that limitation one way or another. Even if things stay the same I'm working on getting Gentoo support into openstack-ansible (deploys via virtualenvs/containers). So work is progressing there too. > That said, I still think we benefit from global requirements for the > second reason: it provides us a mechanism to encourage dependency > convergence. This is very important, as it limits the knowledge required > to operate OpenStack, facilitates contributors jumping from one code > base to another, provides a great checkpoint for licensing checks, and > reduce our overall security exposure by limiting the body of code we > rely on. If we dump global requirements we would have to replace it with > a lot of manual effort to push convergence overall. > Well said :D -- -- Matthew Thode (prometheanfire)
signature.asc
Description: OpenPGP digital signature
__________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
