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/cone/default.nix

@@ -0,0 +1,42 @@
+{ llvmPackages
+, lib
+, fetchFromGitHub
+, cmake
+}:
+
+llvmPackages.stdenv.mkDerivation rec {
+  pname = "cone";
+  version = "unstable-2021-07-25";
+
+  src = fetchFromGitHub {
+    owner = "jondgoodwin";
+    repo = pname;
+    rev = "5feaabc342bcff3755f638a7e25155cd12127592";
+    sha256 = "CTDS83AWtuDY5g6NDn7O2awrYsKFf3Kp35FkMEjfbVw=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [
+    llvmPackages.llvm
+  ];
+
+  postPatch = ''
+    sed -i CMakeLists.txt \
+        -e 's/LLVM 7/LLVM/' \
+        -e '/AVR/d'
+  '';
+
+  installPhase = ''
+    install -Dm755 conec $out/bin/conec
+    install -Dm644 libconestd.a $out/lib/libconestd.a
+  '';
+
+  meta = with lib; {
+    description = "Cone Programming Language";
+    homepage = "https://cone.jondgoodwin.com";
+    license = licenses.mit;
+    maintainers = with maintainers; [ luc65r ];
+    platforms = platforms.all;
+  };
+}