Also, as discussed, it would be good to have the building of language packs be done language by language, so we can specify the languages to rebuild here. You can do:

`shell: "python /tmp/ka-lite-build/kalite/manage.py update_language_packs --ver=0.10.3 -l {{ item }}"
with_items: language_packs_to_build
when: language_packs_to_build is defined`

and then, in keep/vars/main.yml you can put:

`# language_packs_to_build: ["en", "es", "de", ...]`
(if you put that `when: language_packs_to_build is defined` on each of the language-pack-related tasks, then you can uncomment them here)