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/development/python-modules/pysmart/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, smartmontools
+, humanfriendly
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "pysmart";
+  version = "1.1.0";
+
+  src = fetchFromGitHub {
+    owner = "truenas";
+    repo = "py-SMART";
+    rev = "v${version}";
+    sha256 = "sha256-e46ALiYg0Db/gOzqLmVc1vi9ObhfxzqwfQk9/9pz+r0=";
+  };
+
+  postPatch = ''
+    substituteInPlace pySMART/utils.py \
+      --replace "which('smartctl')" '"${smartmontools}/bin/smartctl"'
+  '';
+
+  propagatedBuildInputs = [ humanfriendly ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "pySMART" ];
+
+  meta = with lib; {
+    description = "Wrapper for smartctl (smartmontools)";
+    homepage = "https://github.com/truenas/py-SMART";
+    maintainers = with maintainers; [ nyanloutre ];
+    license = licenses.lgpl21Only;
+  };
+}