Follow XDG Base Directory specifications
Currently abuild write it's config file and build keys to ~/.abuild, and puts generated packages in ~/packages. It would be nice if it would use the XDG Base Directory specification instead so it doesn't clutter the $HOME directory.
The config file would go to ~/.config/abuild/abuild.conf (if $XDG_CONFIG_DIR isn't set) and the keys and packages to ~/.local/share/abuild (if $XDG_DATA_DIRS isn't set).