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;
+  };
+}