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/science/logic/abella/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchurl, rsync, ocamlPackages }:
+
+stdenv.mkDerivation rec {
+  pname = "abella";
+  version = "2.0.7";
+
+  src = fetchurl {
+    url = "http://abella-prover.org/distributions/${pname}-${version}.tar.gz";
+    sha256 = "sha256-/eOiebMFHgrurtrSHPlgZO3xmmxBOUmyAzswXZLd3Yc=";
+  };
+
+  buildInputs = [ rsync ] ++ (with ocamlPackages; [ ocaml ocamlbuild findlib ]);
+
+  installPhase = ''
+    mkdir -p $out/bin
+    rsync -av abella    $out/bin/
+
+    mkdir -p $out/share/emacs/site-lisp/abella/
+    rsync -av emacs/    $out/share/emacs/site-lisp/abella/
+
+    mkdir -p $out/share/abella/examples
+    rsync -av examples/ $out/share/abella/examples/
+  '';
+
+  meta = {
+    description = "Interactive theorem prover";
+    longDescription = ''
+      Abella is an interactive theorem prover based on lambda-tree syntax.
+      This means that Abella is well-suited for reasoning about the meta-theory
+      of programming languages and other logical systems which manipulate
+      objects with binding.
+    '';
+    homepage = "http://abella-prover.org/";
+    license = lib.licenses.gpl3;
+    maintainers = with lib.maintainers; [ bcdarwin ciil ];
+    platforms = lib.platforms.unix;
+  };
+}