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/text/namazu/default.nix

@@ -0,0 +1,34 @@
+{ fetchurl, lib, stdenv, perl, perlPackages, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  pname = "namazu";
+  version = "2.0.21";
+
+  src = fetchurl {
+    url = "http://namazu.org/stable/${pname}-${version}.tar.gz";
+    sha256 = "1xvi7hrprdchdpzhg3fvk4yifaakzgydza5c0m50h1yvg6vay62w";
+  };
+
+  buildInputs = [ perl perlPackages.FileMMagic ];
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    wrapProgram $out/bin/mknmz --set PERL5LIB ${perlPackages.makeFullPerlPath [ perlPackages.FileMMagic ]}
+  '';
+
+  meta = {
+    description = "Full-text search engine";
+
+    longDescription = ''
+      Namazu is a full-text search engine intended for easy use.  Not
+      only does it work as a small or medium scale Web search engine,
+      but also as a personal search system for email or other files.
+    '';
+
+    license = lib.licenses.gpl2Plus;
+    homepage = "http://namazu.org/";
+
+    platforms = lib.platforms.gnu ++ lib.platforms.linux;  # arbitrary choice
+    maintainers = [ ];
+  };
+}