make application runnable under flatpak, correct permission missing

src/config.rs.in

@@ -0,0 +1,4 @@
+pub static VERSION: &str = @VERSION@;
+pub static GETTEXT_PACKAGE: &str = @GETTEXT_PACKAGE@;
+pub static LOCALEDIR: &str = @LOCALEDIR@;
+pub static PKGDATADIR: &str = @PKGDATADIR@;

src/meson.build

@@ -0,0 +1,76 @@
+pkgdatadir = join_paths(get_option('prefix'), get_option('datadir'), meson.project_name())
+gnome = import('gnome')
+
+gnome.compile_resources('toolbx-tuner',
+  'toolbx_tuner.gresource.xml',
+  gresource_bundle: true,
+  install: true,
+  install_dir: pkgdatadir,
+)
+
+conf = configuration_data()
+conf.set_quoted('VERSION', meson.project_version())
+conf.set_quoted('GETTEXT_PACKAGE', 'toolbx-tuner')
+conf.set_quoted('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))
+conf.set_quoted('PKGDATADIR', pkgdatadir)
+
+configure_file(
+    input: 'config.rs.in',
+    output: 'config.rs',
+    configuration: conf
+)
+
+# Copy the config.rs output to the source directory.
+run_command(
+  'cp',
+  join_paths(meson.project_build_root(), 'src', 'config.rs'),
+  join_paths(meson.project_source_root(), 'src', 'config.rs'),
+  check: true
+)
+
+rust_sources = files(
+  'main.rs',
+  'toolbx/mod.rs',
+  'ui/mod.rs',
+  'ui/ui_strings.rs',
+  'ui/app/mod.rs',
+  'ui/app/model.rs',
+  'ui/app/widgets.rs',
+  'ui/app/workers.rs',
+  'ui/app/messages.rs',
+  'ui/app/toolbox_list.rs',
+  'ui/app/update.rs',
+  'ui/components/mod.rs',
+  'ui/components/toolbox_apps/factory.rs',
+  'ui/components/toolbox_apps/messages.rs',
+  'ui/components/toolbox_apps/mod.rs',
+  'ui/components/toolbox_apps/model.rs',
+  'ui/components/toolbox_apps/update.rs',
+  'ui/components/toolbox_apps/widgets.rs',
+  'ui/components/toolbox_settings/messages.rs',
+  'ui/components/toolbox_settings/mod.rs',
+  'ui/components/toolbox_settings/model.rs',
+  'ui/components/toolbox_settings/update.rs',
+  'ui/components/toolbox_settings/widgets.rs',  
+)
+
+sources = [cargo_sources, rust_sources]
+
+cargo_script = find_program(join_paths(meson.project_source_root(), 'build-aux/cargo.sh'))
+cargo_release = custom_target(
+  'cargo-build',
+  build_by_default: true,
+  input: sources,
+  output: meson.project_name(),
+  console: true,
+  install: true,
+  install_dir: get_option('bindir'),
+  command: [
+    cargo_script,
+    meson.project_build_root(),
+    meson.project_source_root(),
+    '@OUTPUT@',
+    get_option('buildtype'),
+    meson.project_name(),
+  ]
+)

src/toolbx_tuner.gresource.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/kuchelmeister/toolbxtuner">
+  </gresource>
+</gresources>