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/tools/misc/betterdiscordctl/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenvNoCC, fetchFromGitHub }:
+
+stdenvNoCC.mkDerivation rec {
+  pname = "betterdiscordctl";
+  version = "2.0.1";
+
+  src = fetchFromGitHub {
+    owner = "bb010g";
+    repo = "betterdiscordctl";
+    rev = "v${version}";
+    sha256 = "0p321rfcihz2779sdd6qfgpxgk5yd53d33vq5pvb50dbdgxww0bc";
+  };
+
+  postPatch = ''
+    substituteInPlace betterdiscordctl \
+      --replace "DISABLE_SELF_UPGRADE=" "DISABLE_SELF_UPGRADE=yes"
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p "$out/bin" "$out/share/doc/betterdiscordctl"
+    install -Dm744 betterdiscordctl $out/bin/betterdiscordctl
+    install -Dm644 README.md $out/share/doc/betterdiscordctl/README.md
+
+    runHook postInstall
+  '';
+
+  doInstallCheck = true;
+
+  installCheckPhase = ''
+    $out/bin/betterdiscordctl --version
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/bb010g/betterdiscordctl";
+    description = "A utility for managing BetterDiscord on Linux";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ivar bb010g ];
+    platforms = platforms.linux;
+  };
+}