doc: Describe how to make X server find TrueType fonts.

* doc/guix.texi (Application Setup): Document how to add TrueType fonts
installed in a Guix profile to the X server font path.
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Alex Kost 2016-07-01 11:12:33 +03:00
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@ -13,6 +13,7 @@
Copyright @copyright{} 2012, 2013, 2014, 2015, 2016 Ludovic Courtès@*
Copyright @copyright{} 2013, 2014, 2016 Andreas Enge@*
Copyright @copyright{} 2013 Nikita Karetnikov@*
Copyright @copyright{} 2014, 2015, 2016 Alex Kost@*
Copyright @copyright{} 2015, 2016 Mathieu Lirzin@*
Copyright @copyright{} 2014 Pierre-Antoine Rault@*
Copyright @copyright{} 2015 Taylan Ulrich Bayırlı/Kammer@*
@ -1208,6 +1209,24 @@ for Chinese languages:
guix package -i font-adobe-source-han-sans:cn
@end example
Older programs such as @command{xterm} do not use Fontconfig and instead
rely on server-side font rendering. Such programs require to specify a
full name of a font using XLFD (X Logical Font Description), like this:
@example
-*-dejavu sans-medium-r-normal-*-*-100-*-*-*-*-*-1
@end example
To be able to use such full names for the TrueType fonts installed in
your Guix profile, you need to extend the font path of the X server:
@example
xset +fp ~/.guix-profile/share/fonts/truetype
@end example
After that, you can run @code{xlsfonts} (from @code{xlsfonts} package)
to make sure your TrueType fonts are listed there.
@subsection X.509 Certificates
The @code{nss-certs} package provides X.509 certificates, which allow