Hello,
I have tried to create RMP packages, So I tried to create development environment. When trying to set up, gives error, After  I have disabled chromium( yum repolist disabled chromium )  and tried again. Again give some error. How can I solve that.

[root@localhost charindu]# yum install @development-tools
Loaded plugins: langpacks, presto, refresh-packagekit
http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found : http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml
Trying other mirror.
google-chrome                                            |  951 B     00:00     
updates/metalink                                         | 6.0 kB     00:00     
updates                                                  | 4.5 kB     00:00     
http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found : http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: chromium. Please verify its path and try again

Thanks.