2 files changed, 13 insertions, 2 deletions
diff --git a/pkgs/desktops/xfce/applications/orage.nix b/pkgs/desktops/xfce/applications/orage.nix
index 9b347715c45e..2c99bad8156b 100644
--- a/pkgs/desktops/xfce/applications/orage.nix
+++ b/pkgs/desktops/xfce/applications/orage.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, pkgconfig, bison, flex, intltool, gtk, libical, dbus-glib
+{ stdenv, fetchurl, fetchpatch, pkgconfig, bison, flex, intltool, gtk, libical, dbus-glib, tzdata
 , libnotify, popt, xfce
 }:
 
@@ -22,6 +22,14 @@ stdenv.mkDerivation rec {
     })
   ];
 
+  postPatch = ''
+    substituteInPlace src/parameters.c        --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
+    substituteInPlace src/tz_zoneinfo_read.c  --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
+    substituteInPlace tz_convert/tz_convert.c --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
+  '';
+
+  postConfigure = "rm -rf libical"; # ensure pkgs.libical is used instead of one included in the orage sources
+
   nativeBuildInputs = [ pkgconfig intltool bison flex ];
 
   buildInputs = [ gtk libical dbus-glib libnotify popt xfce.libxfce4util
diff --git a/pkgs/desktops/xfce/core/xfce4-panel.nix b/pkgs/desktops/xfce/core/xfce4-panel.nix
index 17fd08faf69c..d2d992d54a88 100644
--- a/pkgs/desktops/xfce/core/xfce4-panel.nix
+++ b/pkgs/desktops/xfce/core/xfce4-panel.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, pkgconfig, intltool, gtk, libxfce4util, libxfce4ui
 , libxfce4ui_gtk3, libwnck, exo, garcon, xfconf, libstartup_notification
-, makeWrapper, xfce4-mixer, hicolor-icon-theme
+, makeWrapper, xfce4-mixer, hicolor-icon-theme, tzdata
 , withGtk3 ? false, gtk3, gettext, glib-networking
 }:
 let
@@ -24,6 +24,9 @@ stdenv.mkDerivation rec {
     for f in $(find . -name \*.sh); do
       substituteInPlace $f --replace gettext ${gettext}/bin/gettext
     done
+    substituteInPlace plugins/clock/clock.c \
+       --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo" \
+       --replace "if (!g_file_test (filename, G_FILE_TEST_IS_SYMLINK))" ""
   '';
 
   outputs = [ "out" "dev" "devdoc" ];