[openstack-dev] Is yaml-devel still needed for Devstack

Sean Dague sean at dague.net
Fri Mar 27 13:04:50 UTC 2015

On 03/27/2015 09:01 AM, Adam Young wrote:
> I recently got Devstack to run on RHEL.  In doing so, I had to hack
> around the dependency on yaml-devel (I just removed it from devstack's
> required packages)
> There is no yaml-devel in EPEL or the main repos for RHEL7.1/Centos7.
> Any idea what the right approach is to this moving forward?  Is this
> something that is going to bite us in RDO packaging?
> The dependency is a general one:
> http://git.openstack.org/cgit/openstack-dev/devstack/tree/files/rpms/general#n25
> So I don't know what actually needs it.  I find it interesting that
> Fedora does not seem to have it, either, but  I've had no problem
> running devstack on Fedora 21.  Can we remove this dependency, or at
> least move it closer to where it is needed?

pyyaml will use libyaml to c accelerate yaml parsing. It's not strictly
required, but there may be performance implications.


Sean Dague

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