uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/desktops/xfce/core/xfce4-panel/default.nix

@@ -0,0 +1,59 @@
+{ lib
+, mkXfceDerivation
+, exo
+, garcon
+, glib
+, gobject-introspection
+, gtk3
+, libdbusmenu-gtk3
+, libwnck
+, libxfce4ui
+, libxfce4util
+, tzdata
+, vala
+, xfconf
+}:
+
+mkXfceDerivation {
+  category = "xfce";
+  pname = "xfce4-panel";
+  version = "4.16.4";
+
+  sha256 = "sha256-DlGcec5oUPDMzVztADw9fROmBIIO7isZ8gZEMGeDVcA=";
+
+  nativeBuildInputs = [
+    gobject-introspection
+    vala
+  ];
+
+  buildInputs = [
+    exo
+    garcon
+    libdbusmenu-gtk3
+    libxfce4ui
+    libwnck
+    xfconf
+    tzdata
+  ];
+
+  propagatedBuildInputs = [
+    glib
+    gtk3
+    libxfce4util
+  ];
+
+  patches = [ ./xfce4-panel-datadir.patch ];
+
+  postPatch = ''
+    substituteInPlace plugins/clock/clock.c \
+       --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
+  '';
+
+  # Workaround https://bugzilla.xfce.org/show_bug.cgi?id=15825
+  NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
+
+  meta = with lib; {
+    description = "Panel for the Xfce desktop environment";
+    maintainers = with maintainers; [ ] ++ teams.xfce.members;
+  };
+}

pkgs/desktops/xfce/core/xfce4-panel/xfce4-panel-datadir.patch

@@ -0,0 +1,24 @@
+diff --git a/panel/panel-module-factory.c b/panel/panel-module-factory.c
+index 529fe85..8c792b7 100644
+--- a/panel/panel-module-factory.c
++++ b/panel/panel-module-factory.c
+@@ -39,6 +39,7 @@
+ #include <panel/panel-module.h>
+ #include <panel/panel-module-factory.h>
+ 
++#define DATADIR "/run/current-system/sw/share/xfce4"
+ #define PANEL_PLUGINS_DATA_DIR     (DATADIR G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins")
+ #define PANEL_PLUGINS_DATA_DIR_OLD (DATADIR G_DIR_SEPARATOR_S "panel-plugins")
+ 
+diff --git a/panel/panel-module.c b/panel/panel-module.c
+index ba39320..519440b 100644
+--- a/panel/panel-module.c
++++ b/panel/panel-module.c
+@@ -35,6 +35,7 @@
+ #include <panel/panel-plugin-external-wrapper.h>
+ #include <panel/panel-plugin-external-46.h>
+ 
++#define LIBDIR "/run/current-system/sw/lib/xfce4"
+ #define PANEL_PLUGINS_LIB_DIR (LIBDIR G_DIR_SEPARATOR_S "panel" G_DIR_SEPARATOR_S "plugins")
+ #define PANEL_PLUGINS_LIB_DIR_OLD (LIBDIR G_DIR_SEPARATOR_S "panel-plugins")
+