nemo-seahorse: Remove update script & cmake, simplify (#443344)

pkgs/by-name/ne/nemo-seahorse/fix-schemas.patch

···
---- a/data/meson.build
-+++ b/data/meson.build
-@@ -1,10 +1,13 @@
- dataconf = configuration_data()
- dataconf.set('VERSION', meson.project_version())
-
-+schemadir = get_option('prefix') / get_option('datadir') / 'glib-2.0' / 'schemas'
-+
- install_data(
-     'org.nemo.plugins.seahorse.gschema.xml',
-     'org.nemo.plugins.seahorse.window.gschema.xml',
-     install_dir: get_option('datadir') / 'glib-2.0' / 'schemas',
- )
-
-+meson.add_install_script('glib-compile-schemas', schemadir)
- install_man('nemo-seahorse-tool.1')

pkgs/by-name/ne/nemo-seahorse/package.nix

···
   glib,
   gtk3,
   nemo,
-  cmake,
   dbus-glib,
   libcryptui,
   gcr,
   libnotify,
   gnupg,
   gpgme,
-  nix-update-script,
 }:
 
 stdenv.mkDerivation rec {
···
 
   sourceRoot = "${src.name}/nemo-seahorse";
 
-  patches = [ ./fix-schemas.patch ];
-
   nativeBuildInputs = [
+    glib
     meson
     pkg-config
     ninja
-    cmake
   ];
 
   buildInputs = [
···
     gnupg
   ];
 
-  PKG_CONFIG_LIBNEMO_EXTENSION_EXTENSIONDIR = "${placeholder "out"}/${nemo.extensiondir}";
+  postInstall = ''
+    glib-compile-schemas $out/share/glib-2.0/schemas
+  '';
 
-  passthru.updateScript = nix-update-script { };
+  env.PKG_CONFIG_LIBNEMO_EXTENSION_EXTENSIONDIR = "${placeholder "out"}/${nemo.extensiondir}";
 
   meta = {
     homepage = "https://github.com/linuxmint/nemo-extensions/tree/master/nemo-seahorse";