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/admin/s3bro/default.nix

@@ -0,0 +1,40 @@
+{ lib
+, python3
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "s3bro";
+  version = "2.8";
+  format = "setuptools";
+
+  src = python3.pkgs.fetchPypi {
+    inherit pname version;
+    hash = "sha256-+OqcLbXilbY4h/zRAkvRd8taVIOPyiScOAcDyPZ4RUw=";
+  };
+
+  propagatedBuildInputs = with python3.pkgs; [
+    boto3
+    botocore
+    click
+    termcolor
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "use_2to3=True," ""
+  '';
+
+  # No tests
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "s3bro"
+  ];
+
+  meta = with lib; {
+    description = "s3 CLI tool";
+    homepage = "https://github.com/rsavordelli/s3bro";
+    license = licenses.mit;
+    maintainers = with maintainers; [ psyanticy ];
+  };
+}