Reported by Mark H Weaver <mhw@netris.org>
* guix/build/glib-or-gtk-build-system.scm (generate-icon-cache): Add check for
existence of icons directory.
* guix/build/glib-or-gtk-build-system.scm (data-directories): Rename
'schemas-directories' to 'data-directories' and add support for XDG theming
data.
* guix/build/glib-or-gtk-build-system.scm (gio-module-directories): New
function.
* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Update names to
reflect that we are dealing with more types of data and not only with
schemas. Add handling of GIO modules.
* guix/build-system/glib-or-gtk.scm (lower): Import the 'bin' output of GLib
instead of 'out'. This was an error since we need the program
'glib-compile-schemas'. Update the description.
* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Add
#:glib-or-gtk-wrap-excluded-outputs parameter and honor it.
* guix/build-system/glib-or-gtk.scm (glib-or-gtk-build): Add
#:glib-or-gtk-wrap-excluded-outputs parameter and pass it in BUILDER.
* doc/guix.texi (Build Systems): Mention it.
* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Move body
to 'handle-output' inner procedure, and parametrize it by output name
and directory. Call it for each element of OUTPUTS.
(compile-glib-schemas): Likewise.
* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Use
'for-each' instead of 'map' in for-effect contexts. Use 'cut' instead
of 'lambda' when appropriate.
Ludovic Courtès