meson: Make post-install script a Python script

This is so that the post install script will work on environments where
*NIX shell scripts are not supported, such as on Windows cmd.exe for
Visual Studio builds.

build-aux/meson/post-install.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+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_bindir = sys.argv[3]
+    gtk_libdir = sys.argv[4]
+    gtk_datadir = sys.argv[5]
+    gtk_query_immodules = os.path.join(gtk_bindir, 'gtk-query-immodules-' + gtk_api_version)
+
+    gtk_moduledir = os.path.join(gtk_libdir, 'gtk-' + gtk_api_version, gtk_abi_version)
+    gtk_immodule_dir = os.path.join(gtk_moduledir, 'immodules')
+    gtk_printmodule_dir = os.path.join(gtk_moduledir, 'printbackends')
+
+    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 input methods...')
+    os.makedirs(gtk_immodule_dir, exist_ok=True)
+    immodule_cache_file = open(os.path.join(gtk_moduledir, 'immodules.cache'), 'w')
+    subprocess.call([gtk_query_immodules], stdout=immodule_cache_file)
+    immodule_cache_file.close()
+
+    # Untested!
+    print('Updating module cache for print backends...')
+    os.makedirs(gtk_printmodule_dir, exist_ok=True)
+    subprocess.call(['gio-querymodules', gtk_printmodule_dir])

build-aux/meson/post-install.sh

@@ -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-3.0/3.0.0/printbackends
-  gio-querymodules ${gtk_libdir}/gtk-3.0/3.0.0/printbackends
-
-  echo Updating module cache for input methods...
-  mkdir -p ${gtk_libdir}/gtk-3.0/3.0.0/immodules
-  gio-querymodules ${gtk_libdir}/gtk-3.0/3.0.0/immodules
-fi

meson.build

@@ -749,10 +749,11 @@ endif
 #  subdir('docs/reference')
 #endif
 
-# Keep this in sync with post-install.sh expected arguments
-meson.add_install_script('build-aux/meson/post-install.sh',
+# Keep this in sync with post-install.py expected arguments
+meson.add_install_script('build-aux/meson/post-install.py',
                          gtk_api_version,
                          gtk_binary_version,
+                         join_paths(gtk_prefix, get_option('bindir')),
                          gtk_libdir,
                          gtk_datadir)