Hi Ludo,

>>> Do you happen to know what part of the Enlightenment code refers to 
>>> the ‘locale’ command? 
>> Enlightenment uses output = popen("locale -a", "r"); in these three 
>> files: src/bin/e_intl.c (_e_intl_locale_system_locales_get) 
>> src/modules/conf_intl/e_int_config_intl.c (_fill_data) 
>> src/modules/wizard/page_010.c (wizard_page_init) 'page_010' is the 
>> language selection screen during first time config. 
> In that case a proper solution would be to replace ‘locale’ with 
> ‘/gnu/store/…/bin/locale’ in the files above, using the ‘substitute*’ 
> macro. Would you like to give it a try? There are many examples of 
> similar uses of ‘substitute*’ in the package definitions.

I attached a patch that uses 'substitute*'.

Thanks for your help,
Timo Eisenmann