[fractal/fractal-next] meson: Drop post install script

[Julian Sparber <jsparber src gnome org>]

commit b31db8808672fc39928edd7efae09d9c30fd6b4c
Author: Julian Sparber <julian sparber net>
Date:   Mon Jan 24 13:18:20 2022 +0100

    meson: Drop post install script

 build-aux/meson_post_install.py | 14 --------------
 meson.build                     |  8 ++++++--
 2 files changed, 6 insertions(+), 16 deletions(-)
---
diff --git a/meson.build b/meson.build
index 31d526de..af0a9ce4 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project('fractal',
         'rust',
         version: '0.0.1',
         license: 'GPL-3.0-or-later',
-  meson_version: '>= 0.57')
+        meson_version: '>= 0.59')
 
 i18n = import('i18n')
 gnome = import('gnome')
@@ -80,4 +80,8 @@ subdir('data')
 subdir('po')
 subdir('src')
 
-meson.add_install_script('build-aux/meson_post_install.py')
+gnome.post_install(
+  gtk_update_icon_cache: true,
+  glib_compile_schemas: true,
+  update_desktop_database: true,
+)