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/pyhcl/default.nix

@@ -0,0 +1,46 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, isPy3k
+, lib
+
+# pythonPackages
+, coverage
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "pyhcl";
+  version = "0.4.4";
+  disabled = !isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "virtuald";
+    repo = pname;
+    rev = version;
+    sha256 = "0rcpx4vvj2c6wxp31vay7a2xa5p62kabi91vps9plj6710yz29nc";
+  };
+
+  # https://github.com/virtuald/pyhcl/blob/51a7524b68fe21e175e157b8af931016d7a357ad/setup.py#L64
+  configurePhase = ''
+    echo '__version__ = "${version}"' > ./src/hcl/version.py
+  '';
+
+  checkInputs = [
+    coverage
+    pytest
+  ];
+
+  # https://github.com/virtuald/pyhcl/blob/51a7524b68fe21e175e157b8af931016d7a357ad/tests/run_tests.sh#L4
+  checkPhase = ''
+    coverage run --source hcl -m pytest tests
+  '';
+
+  meta = with lib; {
+    description = "HCL is a configuration language. pyhcl is a python parser for it";
+    homepage = "https://github.com/virtuald/pyhcl";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [
+      kamadorueda
+    ];
+  };
+}