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/development/interpreters/clips/default.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  version = "6.40";
+  pname = "clips";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/clipsrules/CLIPS/${version}/clips_core_source_${
+        builtins.replaceStrings [ "." ] [ "" ] version
+      }.tar.gz";
+    sha256 = "1pr5l61zxf6kjs8b2b028g2aq45pigavwjmrf4l5mrdmlnk3fq5d";
+  };
+
+  postPatch = ''
+    substituteInPlace core/makefile --replace 'gcc' '${stdenv.cc.targetPrefix}cc'
+  '';
+
+  makeFlags = [ "-C" "core" ];
+
+  installPhase = ''
+    runHook preInstall
+    install -D -t $out/bin core/clips
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "A Tool for Building Expert Systems";
+    homepage = "http://www.clipsrules.net/";
+    longDescription = ''
+      Developed at NASA's Johnson Space Center from 1985 to 1996,
+      CLIPS is a rule-based programming language useful for creating
+      expert systems and other programs where a heuristic solution is
+      easier to implement and maintain than an algorithmic solution.
+    '';
+    license = licenses.publicDomain;
+    maintainers = [ maintainers.league ];
+    platforms = platforms.unix;
+  };
+}