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/servers/dns/dnsdist/default.nix

@@ -0,0 +1,52 @@
+{ lib, stdenv, fetchurl, pkg-config, systemd
+, boost, libsodium, libedit, re2
+, net-snmp, lua, protobuf, openssl, zlib, h2o
+, nghttp2, nixosTests
+}:
+
+stdenv.mkDerivation rec {
+  pname = "dnsdist";
+  version = "1.7.0";
+
+  src = fetchurl {
+    url = "https://downloads.powerdns.com/releases/dnsdist-${version}.tar.bz2";
+    sha256 = "sha256-eMxyywzPf7Xz8vrgnHntplpSVjdNoJu1Qbc16mho/GQ=";
+  };
+
+  patches = [
+    # Disable tests requiring networking:
+    # "Error connecting to new server with address 192.0.2.1:53: connecting socket to 192.0.2.1:53: Network is unreachable"
+    ./disable-network-tests.patch
+  ];
+
+  nativeBuildInputs = [ pkg-config protobuf ];
+  buildInputs = [ systemd boost libsodium libedit re2 net-snmp lua openssl zlib h2o nghttp2 ];
+
+  configureFlags = [
+    "--with-libsodium"
+    "--with-re2"
+    "--enable-dnscrypt"
+    "--enable-dns-over-tls"
+    "--enable-dns-over-https"
+    "--with-protobuf=yes"
+    "--with-net-snmp"
+    "--disable-dependency-tracking"
+    "--enable-unit-tests"
+    "--enable-systemd"
+  ];
+
+  doCheck = true;
+
+  enableParallelBuilding = true;
+
+  passthru.tests = {
+    inherit (nixosTests) dnsdist;
+  };
+
+  meta = with lib; {
+    description = "DNS Loadbalancer";
+    homepage = "https://dnsdist.org";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ jojosch ];
+  };
+}