Hi, As I have seen there is only a subset of development libraries included on the upstream's el6 DVD. While packaging my additional software with mock I needed to put some distro SRPMs into my local SRPMs directory to get the *-devel pkgs. (But it would make no sense when the distro packages are updated.) Will be there all *-devel packages included in the CentOS-6 [base]/[update] repositories and will be there a *-debuginfo repo, too? What about contributer repositories? My idea is to have 3 stages of user contrib repositories (two of them controlled by the CentOS dev team): [contrib-unstable] where everyone may upload software packages via web (requiring only a simple registration), that are not well tested and not targeted to a production system. [contrib-testing] packages that have been selected by the developer team that needs to be tested. [contib] packages that are fully tested and confirmed to be stable and which does not have any side-effects to the CentOS base installation. All these points would make C6 fantastic for everyone (for engineers, developers, administrators, end-users and even artists). Cheers, Brian.