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/compilers/obliv-c/default.nix

@@ -0,0 +1,43 @@
+{ lib, stdenv, libgcrypt, fetchFromGitHub, ocamlPackages, perl }:
+stdenv.mkDerivation rec {
+  pname = "obliv-c";
+  version = "0.0pre20210621";
+  buildInputs = [ perl ]
+  ++ (with ocamlPackages; [ ocaml findlib ocamlbuild ]);
+  propagatedBuildInputs = [ libgcrypt ];
+  src = fetchFromGitHub {
+    owner = "samee";
+    repo = "obliv-c";
+    rev = "e02e5c590523ef4dae06e167a7fa00037bb3fdaf";
+    sha256 = "sha256:02vyr4689f4dmwqqs0q1mrack9h3g8jz3pj8zqiz987dk0r5mz7a";
+  };
+
+  hardeningDisable = [ "fortify" ];
+
+  patches = [ ./ignore-complex-float128.patch ];
+
+  preBuild = ''
+    patchShebangs .
+  '';
+
+  preInstall = ''
+    mkdir -p "$out/bin"
+    cp bin/* "$out/bin"
+    mkdir -p "$out/share/doc/obliv-c"
+    cp -r doc/* README* CHANGE* Change* LICEN* TODO* "$out/share/doc/obliv-c"
+    mkdir -p "$out/share/obliv-c"
+    cp -r test "$out/share/obliv-c"
+    mkdir -p "$out/include"
+    cp src/ext/oblivc/*.h "$out/include"
+    mkdir -p "$out/lib"
+    gcc $(ar t _build/libobliv.a | sed -e 's@^@_build/@') --shared -o _build/libobliv.so
+    cp _build/lib*.a _build/lib*.so* "$out/lib"
+  '';
+
+  meta = {
+    description = "A GCC wrapper that makes it easy to embed secure computation protocols inside regular C programs";
+    license = lib.licenses.bsd3;
+    maintainers = [lib.maintainers.raskin];
+    platforms = lib.platforms.linux;
+  };
+}