Please open a bug requesting a plague-client available in one of our repo
https://bugs.contribs.org/show_bug.cgi?id=9245
As per https://bugs.contribs.org/show_bug.cgi?id=9245#c1 this is now available in smedevNote on my vanilla CentOS 6 buildbox I got plague-client from the epel repo
-bash-4.1$ make build/usr/bin/plague-client build smeserver-gitweb smeserver-gitweb-1_1_0-1_el6_sme contribs9Package smeserver-gitweb enqueued. Job ID: 776.
Thanks. I search around in various repos including epel and was unable to find any plague for el6 at the time.
Managed to trigger the build server now: