Missing Dependency: xorg-x11-proto-devel >= 7.2-12

[Teus Benschop]

See ticket http://dev.laptop.org/ticket/6650

When doing a "yum install gtk2-devel", it errors on Missing Dependency: 
xorg-x11-proto-devel >= 7.2-12.

Any help would be appreciated to resolve this.

Could I point yum to another repository, and if so, which one?

I wonder how people compile their gtk2-based packages if such a 
dependency is missing.

Googling on the error only give the above ticket, nothing else.

Thanks!

Teus.