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/pysatochip/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, certifi
+, cryptography
+, ecdsa
+, pyaes
+, pyopenssl
+, pyscard
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "pysatochip";
+  version = "0.14.2";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-+Z3D6ITZouhLbEotvJ9MDfg6QOhjGVKrLi1QL1kOdkE=";
+  };
+
+  postPatch = ''
+    substituteInPlace requirements.txt \
+      --replace "cryptography==3.3.2" "cryptography" \
+      --replace "ecdsa==0.15" "ecdsa" \
+      --replace "pyopenssl==20.0.0" "pyopenssl"
+  '';
+
+  propagatedBuildInputs = [ cryptography ecdsa pyaes pyopenssl pyscard ];
+
+  checkInputs = [ certifi ];
+
+  pythonImportsCheck = [ "pysatochip" ];
+
+  meta = with lib; {
+    description = "Simple python library to communicate with a Satochip hardware wallet";
+    homepage = "https://github.com/Toporin/pysatochip";
+    license = licenses.lgpl3Only;
+    maintainers = with maintainers; [ oxalica ];
+  };
+}