[rhythmbox/postinstall] build: use gnome.post_install() to compile schemas etc.

[Jonathan Matthew <jmatthew src gnome org>]

commit 5c44467d9cfeef3b92f8224ca32cdddd87f75fdd
Author: Jonathan Matthew <jonathan d14n org>
Date:   Wed Apr 20 21:55:36 2022 +1000

    build: use gnome.post_install() to compile schemas etc.
    
    This simplifies the instructions for building from source too.

 INSTALL     | 1 -
 meson.build | 5 +++++
 2 files changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/INSTALL b/INSTALL
index 5e926d704..a76aebd2b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -40,7 +40,6 @@ Simple install procedure
   % meson _build -Dprefix=$PWD/_install          # prepare the build
   % ninja -C _build                              # build Rhythmbox
   % ninja -C _build install                      # install Rhythmbox
-  % glib-compile-schemas _install/share/glib-2.0/schemas
 
 This installs Rhythmbox to the _install directory under the source tree.
 The executable to run will then be _install/bin/rhythmbox.
diff --git a/meson.build b/meson.build
index 960eb6a29..332e090ef 100644
--- a/meson.build
+++ b/meson.build
@@ -328,3 +328,8 @@ if get_option('help')
   subdir('help')
 endif
 
+gnome.post_install(
+  gtk_update_icon_cache: true,
+  glib_compile_schemas: true,
+  update_desktop_database: true
+)