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/applications/graphics/fig2dev/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, stdenv
+, fetchurl
+, ghostscript
+, libpng
+, makeWrapper
+, coreutils
+, bc
+, gnugrep
+, gawk
+, gnused
+}:
+
+stdenv.mkDerivation rec {
+  pname = "fig2dev";
+  version = "3.2.8b";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/mcj/fig2dev-${version}.tar.xz";
+    sha256 = "1jv8rg71dsy00lpg434r5zqs5qrg8mxqvv2gpcjjvmzsm551d2j1";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ libpng ];
+
+  GSEXE="${ghostscript}/bin/gs";
+
+  configureFlags = [ "--enable-transfig" ];
+
+  postInstall = ''
+    wrapProgram $out/bin/fig2ps2tex \
+        --set PATH ${lib.makeBinPath [ coreutils bc gnugrep gawk ]}
+    wrapProgram $out/bin/pic2tpic \
+        --set PATH ${lib.makeBinPath [ gnused ]}
+  '';
+
+  meta = with lib; {
+    description = "Tool to convert Xfig files to other formats";
+    homepage = "http://mcj.sourceforge.net/";
+    license = licenses.xfig;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ lesuisse ];
+  };
+}