[d-spy/wip/jtojnar/meson-postinstall] build: Switch to gnome.post_install

[Jan Tojnar <jtojnar src gnome org>]

commit b86b7181bd48d3f8633db333d154b4ff5e842330
Author: Jan Tojnar <jtojnar gmail com>
Date:   Sat Mar 26 18:22:47 2022 +0100

    build: Switch to gnome.post_install
    
    Removes direct dependency on Python and GTK 3.

 build-aux/meson/postinstall.py | 21 ---------------------
 meson.build                    |  8 ++++++--
 2 files changed, 6 insertions(+), 23 deletions(-)
---
diff --git a/meson.build b/meson.build
index 320bf75..f9b54da 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('dspy', 'c',
         version: '1.2.0',
-  meson_version: '>= 0.56.0',
+  meson_version: '>= 0.59.0',
 )
 
 symbolic_version = '42.0'
@@ -188,4 +188,8 @@ subdir('lib')
 subdir('src')
 subdir('po')
 
-meson.add_install_script('build-aux/meson/postinstall.py')
+gnome.post_install(
+  glib_compile_schemas: true,
+  gtk_update_icon_cache: true,
+  update_desktop_database: true,
+)