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/apt-offline/default.nix

@@ -0,0 +1,42 @@
+{ lib, fetchFromGitHub, python3Packages, nix-update-script, gnupg }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "apt-offline";
+  version = "1.8.4";
+
+  src = fetchFromGitHub {
+    owner = "rickysarraf";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "RBf/QG0ewLS6gnQTBXi0I18z8QrxoBAqEXZ7dro9z5A=";
+  };
+
+  postPatch = ''
+    substituteInPlace org.debian.apt.aptoffline.policy \
+      --replace /usr/bin/ "$out/bin"
+
+    substituteInPlace apt_offline_core/AptOfflineCoreLib.py \
+      --replace /usr/bin/gpgv "${gnupg}/bin/gpgv"
+  '';
+
+  preFixup = ''
+    rm "$out/bin/apt-offline-gui"
+    rm "$out/bin/apt-offline-gui-pkexec"
+  '';
+
+  doCheck = false;
+
+  pythonimportsCheck = [ "apt-offline" ];
+
+  passthru.updateScript = nix-update-script {
+    attrPath = pname;
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/rickysarraf/apt-offline";
+    description = "Offline APT package manager";
+    license = licenses.gpl3;
+    maintainers = [ ];
+    platforms = platforms.linux;
+  };
+}