For the Yahoo! Weather data, I know ... But this is a free (money) software ;) I will make a port to LibGWeather soon !

To get translations, what I do (http://git.gnome.org/browse/gnome-shell-extensions/tree/Makefile.am#n17) is installing the extension package via make install DESTDIR=... and then manually copying the locale directory from $(DESTDIR)$(prefix)/share to the zip file. This is unfortunately needed because gettext uses a complex directory layout, and translations must be in $(localedir)/LC_MESSAGES/$(language)/$(domain).mo If you don't want to mess with autotools, I recommend you to just copy the build system from gnome-shell-extensions at git.gnome.org. Then you can make zip-file and stuff just works. Anyway, this is fine for now.

Ah ! Autotools works with extensions.gnome.org ? I have autotools script in my github. I send a new version ;) ! Thanks !

Sorry, I readed too fast. Make the extension : I have 3 dir ("locale", "gnome-shell", and "glib-2.0"). It work too with the glib-2.0 (like locale, just include de dir in zip-file) ? Because my extension use gschema. Thanks !

Again, look at the link I posted early. It has all you need to go from a standard autotools setup to a zip-file that is good to use with convenience.js. Indeed, they're developed to work together, by the same project. :)

Ok ! :) I will try the build system on gnome-shell-extensions at git.gnome.org ! Thanks for helping ! :)