diff --git a/build-aux/meson/post-install.py b/build-aux/meson/post-install.py
new file mode 100644
index 0000000000..f84b1971f5
--- /dev/null
+++ b/build-aux/meson/post-install.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import subprocess
+
+if 'DESTDIR' not in os.environ:
+    gtk_api_version = sys.argv[1]
+    gtk_abi_version = sys.argv[2]
+    gtk_libdir = sys.argv[3].replace('/', os.sep)
+    gtk_datadir = sys.argv[4].replace('/', os.sep)
+
+    gtk_moduledir = os.path.join(gtk_libdir, 'gtk-' + gtk_api_version, gtk_abi_version)
+    gtk_printmodule_dir = os.path.join(gtk_moduledir, 'printbackends')
+    gtk_immodule_dir = os.path.join(gtk_moduledir, 'immodules')
+
+    print('Compiling GSettings schemas...')
+    subprocess.call(['glib-compile-schemas',
+                    os.path.join(gtk_datadir, 'glib-2.0', 'schemas')])
+
+    print('Updating icon cache...')
+    subprocess.call(['gtk-update-icon-cache', '-q', '-t' ,'-f',
+                    os.path.join(gtk_datadir, 'icons', 'hicolor')])
+
+    print('Updating module cache for print backends...')
+    if not os.path.isdir(gtk_printmodule_dir):
+        os.mkdir(gtk_printmodule_dir)
+    subprocess.call(['gio-querymodules', gtk_printmodule_dir])
+
+    print('Updating module cache for input methods...')
+    if not os.path.isdir(gtk_immodule_dir):
+        os.mkdir(gtk_immodule_dir)
+    subprocess.call(['gio-querymodules', gtk_immodule_dir])
diff --git a/build-aux/meson/post-install.sh b/build-aux/meson/post-install.sh
deleted file mode 100755
index 0d18b13d76..0000000000
--- a/build-aux/meson/post-install.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/bin/sh
-
-gtk_api_version=$1
-gtk_abi_version=$2
-gtk_libdir=$3
-gtk_datadir=$4
-
-# Package managers set this so we don't need to run
-if [ -z "$DESTDIR" ]; then
-  echo Compiling GSettings schemas...
-  glib-compile-schemas ${gtk_datadir}/glib-2.0/schemas
-
-  echo Updating desktop database...
-  update-desktop-database -q ${gtk_datadir}/applications
-
-  echo Updating icon cache...
-  gtk-update-icon-cache -q -t -f ${gtk_datadir}/icons/hicolor
-
-  echo Updating module cache for print backends...
-  mkdir -p ${gtk_libdir}/gtk-4.0/4.0.0/printbackends
-  gio-querymodules ${gtk_libdir}/gtk-4.0/4.0.0/printbackends
-
-  echo Updating module cache for input methods...
-  mkdir -p ${gtk_libdir}/gtk-4.0/4.0.0/immodules
-  gio-querymodules ${gtk_libdir}/gtk-4.0/4.0.0/immodules
-fi
diff --git a/meson.build b/meson.build
index 53504f9279..923e13e635 100644
--- a/meson.build
+++ b/meson.build
@@ -897,7 +897,7 @@ if get_option('documentation')
 endif
 
 # Keep this in sync with post-install.sh expected arguments
-meson.add_install_script('build-aux/meson/post-install.sh',
+meson.add_install_script('build-aux/meson/post-install.py',
                          gtk_api_version,
                          gtk_binary_version,
                          gtk_libdir,