NixOS/nixpkgs — pull request #3683 by ruediger (2014-08-19 18:40:05+00:00)
Title: gdb: Update to 7.8 and include Guile support.

GDB 7.8 adds Guile scripting support. This is now enabled by default as
well. Checking for guile also adds a pkg-config dependency.

It seems Python is explicitly excluded from cross building. I'm not
sure if Guile should also be excluded.