abiword: fix gschemas crash and missing icons

The gtk3 file dialogs were crashing, as always without wrapping.
/cc maintainer @pSub.

pkgs/applications/office/abiword/default.nix

···
 { stdenv, fetchurl, pkgconfig, gtk3, libglade, libgnomecanvas, fribidi
 , libpng, popt, libgsf, enchant, wv, librsvg, bzip2, libjpeg, perl
-, boost, libxslt, goffice
+, boost, libxslt, goffice, makeWrapper, iconTheme
 }:
 
 stdenv.mkDerivation rec {
···
 
   buildInputs =
     [ pkgconfig gtk3 libglade librsvg bzip2 libgnomecanvas fribidi libpng popt
-      libgsf enchant wv libjpeg perl boost libxslt goffice
+      libgsf enchant wv libjpeg perl boost libxslt goffice makeWrapper iconTheme
     ];
+
+  postFixup = ''
+    wrapProgram "$out/bin/abiword" \
+      --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"
+  '';
 
   meta = with stdenv.lib; {
     description = "Word processing program, similar to Microsoft Word";

pkgs/top-level/all-packages.nix

···
 
   abiword = callPackage ../applications/office/abiword {
     inherit (gnome) libglade libgnomecanvas;
+    iconTheme = gnome3.defaultIconTheme;
   };
 
   abook = callPackage ../applications/misc/abook { };