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-knots/default.nix

@@ -0,0 +1,83 @@
+{ lib
+, stdenv
+, fetchurl
+, autoreconfHook
+, pkg-config
+, util-linux
+, hexdump
+, autoSignDarwinBinariesHook
+, wrapQtAppsHook ? null
+, boost
+, libevent
+, miniupnpc
+, zeromq
+, zlib
+, db48
+, sqlite
+, qrencode
+, qtbase ? null
+, qttools ? null
+, python3
+, nixosTests
+, withGui
+, withWallet ? true
+}:
+
+with lib;
+stdenv.mkDerivation rec {
+  pname = if withGui then "bitcoin-knots" else "bitcoind-knots";
+  version = "22.0.knots20211108";
+
+  src = fetchurl {
+    url = "https://bitcoinknots.org/files/22.x/${version}/guix/bitcoin-${version}.tar.gz";
+    sha256 = "04sqbx4sp3bzwbl8z53nz96n3s0590h327ih0mbgyvfvl3b8pj4i";
+  };
+
+  nativeBuildInputs =
+    [ autoreconfHook pkg-config ]
+    ++ optionals stdenv.isLinux [ util-linux ]
+    ++ optionals stdenv.isDarwin [ hexdump ]
+    ++ optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ optionals withGui [ wrapQtAppsHook ];
+
+  buildInputs = [ boost libevent miniupnpc zeromq zlib ]
+    ++ optionals withWallet [ db48 sqlite ]
+    ++ optionals withGui [ qrencode qtbase qttools ];
+
+  configureFlags = [
+    "--with-boost-libdir=${boost.out}/lib"
+    "--disable-bench"
+  ] ++ optionals (!doCheck) [
+    "--disable-tests"
+    "--disable-gui-tests"
+  ] ++ optionals (!withWallet) [
+    "--disable-wallet"
+  ] ++ optionals withGui [
+    "--with-gui=qt5"
+    "--with-qt-bindir=${qtbase.dev}/bin:${qttools.dev}/bin"
+  ];
+
+  checkInputs = [ python3 ];
+
+  doCheck = true;
+
+  checkFlags =
+    [ "LC_ALL=en_US.UTF-8" ]
+    # QT_PLUGIN_PATH needs to be set when executing QT, which is needed when testing Bitcoin's GUI.
+    # See also https://github.com/NixOS/nixpkgs/issues/24256
+    ++ optional withGui "QT_PLUGIN_PATH=${qtbase}/${qtbase.qtPluginPrefix}";
+
+  enableParallelBuilding = true;
+
+  passthru.tests = {
+    smoke-test = nixosTests.bitcoind-knots;
+  };
+
+  meta = {
+    description = "A derivative of Bitcoin Core with a collection of improvements";
+    homepage = "https://bitcoinknots.org/";
+    maintainers = with maintainers; [ prusnak mmahut ];
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}