libpeas: correct gtk .pc file

Here's the diff post meson:
-prefix=/nix/store/hfrrby8wapcz17v927as18z3znqdv2ps-libpeas-1.22.0
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
+prefix=/nix/store/sc8h3m6fv3zdjzpkimhm4yqarafhjp6y-libpeas-1.24.0
+libdir=${prefix}/lib
 includedir=${prefix}/include

-Name: libpeas-gtk
-Description: libpeas-gtk, a GObject plugins library (Gtk widgets)
-Requires: glib-2.0 >= 2.38.0, gtk+-3.0 >= 3.0.0, libpeas-1.0 >= 1.22.0
-Version: 1.22.0
+Name: libpeas-gtk-1.0
+Description: GObject plugins library widgetery
+Version: 1.24.0
+Requires.private: libpeas-1.0, glib-2.0 >=  2.38.0, gobject-2.0 >=  2.38.0, gobject-introspection-1.0 >=  1.39.0, gtk+-3.0 >=  3.0.0, gmodule-2.0 >=  2.38.0, gio-2.0 >=  2.38.0
+Libs: -L${prefix}//lib  -lpeas-gtk-1.0
 Cflags: -I${includedir}/libpeas-1.0
-Libs: -L${libdir} -lpeas-gtk-1.0

As we can see, all the requires got moved into private.
This appears to have broken midori [0]

[0]: https://hydra.nixos.org/build/101627205

pkgs/development/libraries/libpeas/default.nix

@@ -18,6 +18,10 @@ stdenv.mkDerivation rec {
     gobject-introspection
   ];
 
+  patches = [
+    ./fix-libpeas-gtk-pc.patch
+  ];
+
   passthru = {
     updateScript = gnome3.updateScript {
       packageName = pname;

pkgs/development/libraries/libpeas/fix-libpeas-gtk-pc.patch

@@ -0,0 +1,22 @@
+diff --git a/libpeas-gtk/meson.build b/libpeas-gtk/meson.build
+index bf590de..00def42 100644
+--- a/libpeas-gtk/meson.build
++++ b/libpeas-gtk/meson.build
+@@ -111,10 +111,17 @@ libpeas_gtk_test_dep = declare_dependency(
+   sources: libpeas_gtk_dep_sources,
+ )
+ 
++libpeas_gtk_pc_reqs = [
++  glib_dep,
++  gtk_dep,
++  package_string + ' >= @0@'.format(version)
++]
++
+ libpeas_gtk_pc = pkg.generate(
+   libpeas_gtk_sha,
+   name: package_gtk_string,
+   description: 'GObject plugins library widgetery',
++  requires: libpeas_gtk_pc_reqs,
+   subdirs: package_string,
+   install_dir: pkgconfigdir,
+ )