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/blockchains/bitcoin-classic/default.nix

@@ -0,0 +1,78 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, autoreconfHook
+, openssl
+, db48
+, boost
+, zlib
+, miniupnpc
+, qtbase ? null
+, qttools ? null
+, util-linux
+, protobuf
+, qrencode
+, libevent
+, withGui
+}:
+
+stdenv.mkDerivation rec {
+  pname = "bitcoin" + lib.optionalString (!withGui) "d" + "-classic";
+  version = "1.3.8uahf";
+
+  src = fetchFromGitHub {
+    owner = "bitcoinclassic";
+    repo = "bitcoinclassic";
+    rev = "v${version}";
+    sha256 = "sha256-fVmFD1B4kKoejd2cmPPF5TJJQTAA6AVsGlVY8IIUNK4=";
+  };
+
+  nativeBuildInputs = [ pkg-config autoreconfHook ];
+  buildInputs = [
+    openssl
+    db48
+    boost
+    zlib
+    miniupnpc
+    util-linux
+    protobuf
+    libevent
+  ] ++ lib.optionals withGui [ qtbase qttools qrencode ];
+
+  configureFlags = [ "--with-boost-libdir=${boost.out}/lib" ]
+    ++ lib.optionals withGui [
+    "--with-gui=qt5"
+    "--with-qt-bindir=${qtbase.dev}/bin:${qttools.dev}/bin"
+  ];
+
+  CXXFLAGS = [ "-std=c++14" ];
+
+  enableParallelBuilding = true;
+
+  dontWrapQtApps = true;
+
+  meta = with lib; {
+    description = "Peer-to-peer electronic cash system (Classic client)";
+    longDescription = ''
+      Bitcoin is a free open source peer-to-peer electronic cash system that is
+      completely decentralized, without the need for a central server or trusted
+      parties. Users hold the crypto keys to their own money and transact directly
+      with each other, with the help of a P2P network to check for double-spending.
+
+      Bitcoin Classic stands for the original Bitcoin as Satoshi described it,
+      "A Peer-to-Peer Electronic Cash System". We are writing the software that
+      miners and users say they want. We will make sure it solves their needs, help
+      them deploy it, and gracefully upgrade the bitcoin network's capacity
+      together. The data shows that Bitcoin can grow, on-chain, to welcome many
+      more users onto our coin in a safe and distributed manner. In the future we
+      will continue to release updates that are in line with Satoshi’s whitepaper &
+      vision, and are agreed upon by the community.
+    '';
+    homepage = "https://bitcoinclassic.com/";
+    maintainers = with maintainers; [ jefdaj ];
+    license = licenses.mit;
+    broken = stdenv.isDarwin;
+    platforms = platforms.unix;
+  };
+}