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/backup/zfs-replicate/default.nix

@@ -0,0 +1,42 @@
+{ buildPythonApplication, click, fetchPypi, hypothesis, mypy, pytest
+, pytest-cov, pytest-runner, lib, stringcase
+}:
+
+buildPythonApplication rec {
+  pname = "zfs-replicate";
+  version = "1.2.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "b2cb9d4670a6e12d14a446c10d857862e91af6e4526f607e08b41bde89953bb8";
+  };
+
+  checkInputs = [
+    hypothesis
+    mypy
+    pytest
+    pytest-cov
+  ];
+
+  buildInputs = [
+    pytest-runner
+  ];
+
+  propagatedBuildInputs = [
+    click
+    stringcase
+  ];
+
+  doCheck = true;
+
+  checkPhase = ''
+    pytest --doctest-modules
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/alunduil/zfs-replicate";
+    description = "ZFS Snapshot Replication";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ alunduil ];
+  };
+}