[gnome-text-editor: 2/3] Meson: Use gnome.post_install()

[Christian Hergert <chergert src gnome org>]

commit 0a9bca3e6460435ca8a2c96e4a6af7ef920465d4
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Wed Jun 23 13:57:50 2021 -0400

    Meson: Use gnome.post_install()
    
    It has a few advantages:
    - It uses gtk4-update-icon-cache, current script fails if gtk3 is not
      installed.
    - Get path for tools from pc files, they are not always in PATH.
    - The script is ran only once even if multiple subprojects use it.

 build-aux/meson/postinstall.py | 21 ---------------------
 meson.build                    |  6 +++++-
 2 files changed, 5 insertions(+), 22 deletions(-)
---
diff --git a/meson.build b/meson.build
index 153525d..cd09d14 100644
--- a/meson.build
+++ b/meson.build
@@ -162,4 +162,8 @@ configure_file(
   configuration: config_h,
 )
 
-meson.add_install_script('build-aux/meson/postinstall.py')
+gnome.post_install(
+  gtk_update_icon_cache: true,
+  glib_compile_schemas: true,
+  update_desktop_database: true,
+)