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/tools/misc/birdfont/default.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, fetchurl, pkg-config, python3, xmlbird,
+cairo, gdk-pixbuf, libgee, glib, gtk3, webkitgtk, libnotify, sqlite, vala,
+gobject-introspection, gsettings-desktop-schemas, wrapGAppsHook }:
+
+stdenv.mkDerivation rec {
+  pname = "birdfont";
+  version = "2.30.0";
+
+  src = fetchurl {
+    url = "https://birdfont.org/releases/${pname}-${version}.tar.xz";
+    sha256 = "sha256-aIhJXmzLY2Sw9mFe2AmLkXb+YRnFu1pMnFeDF+zfHRE=";
+  };
+
+  nativeBuildInputs = [ python3 pkg-config vala gobject-introspection wrapGAppsHook ];
+  buildInputs = [ xmlbird libgee cairo gdk-pixbuf glib gtk3 webkitgtk libnotify sqlite gsettings-desktop-schemas ];
+
+  postPatch = ''
+    substituteInPlace install.py \
+      --replace 'platform.version()' '"Nix"'
+
+    patchShebangs .
+  '';
+
+  buildPhase = "./build.py";
+
+  installPhase = "./install.py";
+
+  meta = with lib; {
+    description = "Font editor which can generate fonts in TTF, EOT, SVG and BIRDFONT format";
+    homepage = "https://birdfont.org";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}