[wishlist] fontconfig's cache is not refreshed automatically

OpenSubmitted by Mark H Weaver.
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  • Mark H Weaver
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Mark H Weaver wrote on 5 Oct 2014 23:53
(address . bug-guix@gnu.org)
87sij2dvzn.fsf@netris.org
When a user runs emacs (or any other program that uses fontconfig), a
cache is created in ~/.cache/fontconfig. This cache is not updated
automatically after installing new fonts, and must be manually cleared
out.

I guess this might be related to our use of Jan 1, 1970 as the
timestamps for all files in /gnu/store (which includes user profiles).

We should either modify fontconfig to detect a stale cache using a
method that works on Guix, or else notify the user that they must clear
the cache after installing ttf fonts.

Mark
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