Pierre Neidhardt <ambrevar@gmail.com> writes:

> Marius Bakke <mbakke@fastmail.com> writes:
>
>> Pierre Neidhardt <ambrevar@gmail.com> writes:
>>
>>>> guix package -I local
>>> glibc-utf8-locales	2.26.105-g0890d5379c	out	/gnu/store/3k6hl20c3b7big8ngrsl6mj9k8xav99d-glibc-utf8-locales-2.26.105-g0890d5379c
>>>
>>>> guix package -I emacs
>>> emacs	25.3	out	/gnu/store/y335nx4r08m6kg0yrna7spfwr4s05n36-emacs-25.3
>>>
>>> How do I check which glibc Emacs is using?
>>> I can think of `ldd emacs` but... Where is ldd? :p
>>
>> "ldd" is in "glibc" :-)
>>
>> You can also use `guix gc -R /gnu/store/...-emacs-25.3 | grep glibc`.
>
> Here:
>
> 	> guix gc -R ${guix build emacs} | grep glibc
> 	/gnu/store/4sqaib7c2dfjv62ivrg9b8wa7bh226la-glibc-2.26.105-g0890d5379c

This looks good.  Let's rewind for a bit.  The original error message
was:


	> stow .
	perl: warning: Setting locale failed.
	perl: warning: Please check that your locale settings:
		LANGUAGE = (unset),
		LC_ALL = (unset),
		LANG = "en_US.utf8"
	    are supported and installed on your system.
	perl: warning: Falling back to the standard locale ("C").

	> emacs
	(process:7796): Gtk-WARNING **: Locale not supported by C library.
		Using the fallback 'C' locale.

Can you post the output of these commands in a terminal:

$ locale
$ env | grep LOCPATH
$ ls -l /run/current-system/locale/