fix(rpi4): set up deconz

pkgs/deconz/default.nix

@@ -0,0 +1,42 @@
+{ stdenv, fetchurl, mkDerivation, dpkg, autoPatchelfHook
+, qtserialport, qtwebsockets
+, libredirect, makeWrapper, gzip, gnutar
+}:
+
+mkDerivation rec {
+  name = "deconz-${version}";
+  version = "2.05.82";
+
+  src = fetchurl {
+    url = "https://deconz.dresden-elektronik.de/raspbian/alpha/deconz_${version}-debian-stretch-beta_arm64.deb";
+    sha256 = "cCH7XhRXCHKm5AVsM19TyHwAjhbTv4qyDx2GamuDWQw=";
+  };
+
+  nativeBuildInputs = [ dpkg autoPatchelfHook makeWrapper ];
+
+  buildInputs = [ qtserialport qtwebsockets ];
+
+  unpackPhase = "dpkg-deb -x $src .";
+
+  installPhase = ''
+    mkdir -p "$out"
+    cp -r usr/* .
+    cp -r share/deCONZ/plugins/* lib/
+    cp -r . $out
+
+    wrapProgram "$out/bin/deCONZ" \
+        --set LD_PRELOAD "${libredirect}/lib/libredirect.so" \
+        --set NIX_REDIRECTS "/usr/share=$out/share:/usr/bin=$out/bin" \
+        --prefix PATH : "${stdenv.lib.makeBinPath [ gzip gnutar ]}"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Manage ZigBee network with ConBee, ConBee II or RaspBee hardware";
+    # 2019-08-19: The homepage links to old software that doesn't even work --
+    # it fails to detect ConBee2.
+    homepage = "https://www.dresden-elektronik.de/funktechnik/products/software/pc-software/deconz/?L=1";
+    license = licenses.unfree;
+    platforms = with platforms; linux;
+    maintainers = with maintainers; [ felschr ];
+  };
+}