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/xmlbird.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchurl, python3, pkg-config, vala, glib, gobject-introspection }:
+
+stdenv.mkDerivation rec {
+  pname = "xmlbird";
+  version = "1.2.12";
+
+  src = fetchurl {
+    url = "https://birdfont.org/${pname}-releases/lib${pname}-${version}.tar.xz";
+    sha256 = "15z4rvii3p54g2hasibjnf83c1702d84367fnl8pbisjqqrdcl04";
+  };
+
+  nativeBuildInputs = [ python3 pkg-config vala gobject-introspection ];
+
+  buildInputs = [ glib ];
+
+  postPatch = ''
+    substituteInPlace configure \
+      --replace 'platform.dist()[0]' '"nix"'
+    patchShebangs .
+  '';
+
+  buildPhase = "./build.py";
+
+  installPhase = "./install.py";
+
+  meta = with lib; {
+    description = "XML parser for Vala and C programs";
+    homepage = "https://birdfont.org/xmlbird.php";
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}