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/pantheon/desktop/wingpanel/default.nix

@@ -0,0 +1,92 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, nix-update-script
+, wrapGAppsHook
+, pkg-config
+, meson
+, ninja
+, vala
+, gala
+, gtk3
+, libgee
+, granite
+, gettext
+, mutter
+, mesa
+, json-glib
+, python3
+, elementary-gtk-theme
+, elementary-icon-theme
+}:
+
+stdenv.mkDerivation rec {
+  pname = "wingpanel";
+  version = "3.0.2";
+
+  src = fetchFromGitHub {
+    owner = "elementary";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-WvkQx+9YjKCINpyVg8KjCV0GAb0rJfblSFaO14/4oas=";
+  };
+
+  patches = [
+    ./indicators.patch
+  ];
+
+  nativeBuildInputs = [
+    gettext
+    meson
+    ninja
+    pkg-config
+    python3
+    vala
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    elementary-icon-theme
+    gala
+    granite
+    gtk3
+    json-glib
+    libgee
+    mutter
+    mesa # for libEGL
+  ];
+
+  postPatch = ''
+    chmod +x meson/post_install.py
+    patchShebangs meson/post_install.py
+  '';
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      # this GTK theme is required
+      --prefix XDG_DATA_DIRS : "${elementary-gtk-theme}/share"
+
+      # the icon theme is required
+      --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS"
+    )
+  '';
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = "pantheon.${pname}";
+    };
+  };
+
+  meta = with lib; {
+    description = "The extensible top panel for Pantheon";
+    longDescription = ''
+      Wingpanel is an empty container that accepts indicators as extensions,
+      including the applications menu.
+    '';
+    homepage = "https://github.com/elementary/wingpanel";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = teams.pantheon.members;
+    mainProgram = "io.elementary.wingpanel";
+  };
+}

pkgs/desktops/pantheon/desktop/wingpanel/indicators.patch

@@ -0,0 +1,21 @@
+diff --git a/lib/IndicatorManager.vala b/lib/IndicatorManager.vala
+index a99a1ec..0ae7799 100644
+--- a/lib/IndicatorManager.vala
++++ b/lib/IndicatorManager.vala
+@@ -115,7 +115,15 @@ public class Wingpanel.IndicatorManager : GLib.Object {
+         }
+ 
+         /* load indicators */
+-        var base_folder = File.new_for_path (Build.INDICATORS_DIR);
++
++        var indicators_path = Environment.get_variable("WINGPANEL_INDICATORS_PATH");
++        if (indicators_path != null) {
++            debug ("WINGPANEL_INDICATORS_PATH set to %s", indicators_path);
++        } else {
++            critical ("WINGPANEL_INDICATORS_PATH not set");
++        }
++
++        var base_folder = File.new_for_path (indicators_path);
+ 
+         try {
+             monitor = base_folder.monitor_directory (FileMonitorFlags.NONE, null);

pkgs/desktops/pantheon/desktop/wingpanel/wrapper.nix

@@ -0,0 +1,61 @@
+{ lib
+, wrapGAppsHook
+, glib
+, stdenv
+, xorg
+, wingpanel
+, wingpanelIndicators
+, switchboard-with-plugs
+, indicators ? null
+  # Only useful to disable for development testing.
+, useDefaultIndicators ? true
+}:
+
+let
+  selectedIndicators =
+    if indicators == null then wingpanelIndicators
+    else indicators ++ (lib.optionals useDefaultIndicators wingpanelIndicators);
+in
+stdenv.mkDerivation rec {
+  pname = "${wingpanel.pname}-with-indicators";
+  inherit (wingpanel) version;
+
+  src = null;
+
+  paths = [
+    wingpanel
+  ] ++ selectedIndicators;
+
+  passAsFile = [ "paths" ];
+
+  nativeBuildInputs = [
+    glib
+    wrapGAppsHook
+  ];
+
+  buildInputs = lib.forEach selectedIndicators (x: x.buildInputs)
+    ++ selectedIndicators;
+
+  dontUnpack = true;
+  dontConfigure = true;
+  dontBuild = true;
+
+  preferLocalBuild = true;
+  allowSubstitutes = false;
+
+  installPhase = ''
+    mkdir -p $out
+    for i in $(cat $pathsPath); do
+      ${xorg.lndir}/bin/lndir -silent $i $out
+    done
+  '';
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --set WINGPANEL_INDICATORS_PATH "$out/lib/wingpanel"
+      --set SWITCHBOARD_PLUGS_PATH "${switchboard-with-plugs}/lib/switchboard"
+    )
+  '';
+
+  inherit (wingpanel) meta;
+}