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-indicators/datetime/default.nix

@@ -0,0 +1,80 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, nix-update-script
+, substituteAll
+, pkg-config
+, meson
+, python3
+, ninja
+, vala
+, gtk3
+, granite
+, wingpanel
+, evolution-data-server
+, libical
+, libgee
+, libhandy
+, libxml2
+, libsoup
+, libgdata
+, elementary-calendar
+}:
+
+stdenv.mkDerivation rec {
+  pname = "wingpanel-indicator-datetime";
+  version = "2.4.0";
+
+  src = fetchFromGitHub {
+    owner = "elementary";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-GxlnzLDrZmDDAGlUMoM4k4SkbCqra3Th6ugRAj3Wse4=";
+  };
+
+  patches = [
+    (substituteAll {
+      src = ./fix-paths.patch;
+      elementary_calendar = elementary-calendar;
+    })
+  ];
+
+  nativeBuildInputs = [
+    libxml2
+    meson
+    ninja
+    pkg-config
+    python3
+    vala
+  ];
+
+  buildInputs = [
+    evolution-data-server
+    granite
+    gtk3
+    libgee
+    libhandy
+    libical
+    libsoup
+    wingpanel
+  ];
+
+  postPatch = ''
+    chmod +x meson/post_install.py
+    patchShebangs meson/post_install.py
+  '';
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = "pantheon.${pname}";
+    };
+  };
+
+  meta = with lib; {
+    description = "Date & Time Indicator for Wingpanel";
+    homepage = "https://github.com/elementary/wingpanel-indicator-datetime";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = teams.pantheon.members;
+  };
+}

pkgs/desktops/pantheon/desktop/wingpanel-indicators/datetime/fix-paths.patch

@@ -0,0 +1,26 @@
+diff --git a/src/Indicator.vala b/src/Indicator.vala
+index 4aba03c..6385bc9 100644
+--- a/src/Indicator.vala
++++ b/src/Indicator.vala
+@@ -55,7 +55,7 @@ public class DateTime.Indicator : Wingpanel.Indicator {
+ 
+             panel_label.button_press_event.connect ((e) => {
+                 if (e.button == Gdk.BUTTON_MIDDLE) {
+-                    var command = "io.elementary.calendar --show-day %s".printf (new GLib.DateTime.now_local ().format ("%F"));
++                    var command = "@elementary_calendar@/bin/io.elementary.calendar --show-day %s".printf (new GLib.DateTime.now_local ().format ("%F"));
+                     try {
+                         var appinfo = AppInfo.create_from_commandline (command, null, AppInfoCreateFlags.NONE);
+                         appinfo.launch_uris (null, null);
+diff --git a/src/Widgets/calendar/CalendarView.vala b/src/Widgets/calendar/CalendarView.vala
+index cb54253..7477d1a 100644
+--- a/src/Widgets/calendar/CalendarView.vala
++++ b/src/Widgets/calendar/CalendarView.vala
+@@ -242,7 +242,7 @@ public class DateTime.Widgets.CalendarView : Gtk.Grid {
+ 
+     // TODO: As far as maya supports it use the Dbus Activation feature to run the calendar-app.
+     public void show_date_in_maya (GLib.DateTime date) {
+-        var command = "io.elementary.calendar --show-day %s".printf (date.format ("%F"));
++        var command = "@elementary_calendar@/bin/io.elementary.calendar --show-day %s".printf (date.format ("%F"));
+ 
+         try {
+             var appinfo = AppInfo.create_from_commandline (command, null, AppInfoCreateFlags.NONE);