Install application icons via meson

data/icons/meson.build

@@ -0,0 +1,29 @@
+application_id = meson.project_name()
+
+# Install our icons in all the required sizes
+icon_sizes = ['16', '24', '32', '48', '64', '128']
+
+foreach i : icon_sizes
+    install_data(
+        'hicolor' / i + 'x' + i / application_id + '.svg',
+        install_dir: get_option('datadir') / 'icons' / 'hicolor' / i + 'x' + i / 'apps',
+        rename: application_id + '.svg'
+    )
+    install_data(
+        'hicolor' / i + 'x' + i / application_id + '.svg',
+        install_dir: get_option('datadir') / 'icons' / 'hicolor' / i + 'x' + i + '@2' / 'apps',
+        rename: application_id + '.svg'
+    )
+    install_data(
+        'hicolor' / i + 'x' + i / application_id + '.svg',
+        install_dir: get_option('datadir') / 'icons' / 'hicolor' / i + 'x' + i / 'mimetypes',
+        rename: application_id + '.svg'
+    )
+endforeach
+
+
+install_data(
+    'hicolor/128x128/' + meson.project_name() + '.svg',
+    install_dir: get_option('datadir') / 'icons' / 'hicolor' / 'scalable' / 'apps',
+    rename: application_id + '.svg'
+)

data/meson.build

@@ -49,3 +49,5 @@ if compile_schemas.found()
         compile_schemas,
         args: ['--strict', '--dry-run', meson.current_source_dir()])
 endif
+
+subdir('icons')

meson.build

@@ -25,6 +25,6 @@ subdir('src')
 
 gnome.post_install(
     glib_compile_schemas: true,
-    # gtk_update_icon_cache: true,
+    gtk_update_icon_cache: true,
     update_desktop_database: true,
 )