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/ml-collections/default.nix

@@ -0,0 +1,53 @@
+{ absl-py
+, buildPythonPackage
+, contextlib2
+, fetchPypi
+, fetchurl
+, lib
+, pyyaml
+}:
+
+let
+  requirements = fetchurl {
+    url = "https://raw.githubusercontent.com/google/ml_collections/7f749a281c69f9d0b339c05ecb94b80d95029f25/requirements.txt";
+    sha256 = "1xb351hiscj4zmajfkql3swpacdp6lmz8iwdvwwdx2zqw9a62zps";
+  };
+  requirements-test = fetchurl {
+    url = "https://raw.githubusercontent.com/google/ml_collections/7f749a281c69f9d0b339c05ecb94b80d95029f25/requirements-test.txt";
+    sha256 = "0r457k2nrg5jkf093r0x29yf8xwy6l7jxi6al0fh7mmnfrhr9cb1";
+  };
+in
+buildPythonPackage rec {
+  pname = "ml-collections";
+  version = "0.1.0";
+
+  # ml-collections does not have any git release tags. See https://github.com/google/ml_collections/issues/8.
+  src = fetchPypi {
+    inherit version;
+    pname = "ml_collections";
+    sha256 = "0g6gxfz8g6fh1sghys869ylxgpda9hq7ylc8jw05608l3k6pz8ar";
+  };
+
+  # The pypi source archive does not include requirements.txt or
+  # requirements-test.txt. See https://github.com/google/ml_collections/issues/7.
+  postPatch = ''
+    cp ${requirements} requirements.txt
+    cp ${requirements-test} requirements-test.txt
+  '';
+
+  propagatedBuildInputs = [ absl-py contextlib2 pyyaml ];
+
+  # The official test suite uses bazel. With pytestCheckHook there are name
+  # conflicts between files and tests have assumptions that are broken by the
+  # nix-build environment, eg. re module names and __file__ attributes.
+  doCheck = false;
+
+  pythonImportsCheck = [ "ml_collections" ];
+
+  meta = with lib; {
+    description = "ML Collections is a library of Python collections designed for ML usecases.";
+    homepage = "https://github.com/google/ml_collections";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ samuela ];
+  };
+}