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/cchardet/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, fetchPypi
+, python
+, nose
+}:
+
+buildPythonPackage rec {
+  pname = "cchardet";
+  version = "2.1.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c428b6336545053c2589f6caf24ea32276c6664cb86db817e03a94c60afa0eaf";
+  };
+
+  pythonImportsCheck = [
+    "cchardet"
+  ];
+
+  checkInputs = [ nose ];
+
+  # on non x86-64 some charsets are identified as their superset, so we skip these tests (last checked with version 2.1.7)
+  preCheck = ''
+    cp -R src/tests $TMPDIR
+    pushd $TMPDIR
+  '' + lib.optionalString (stdenv.hostPlatform.system != "x86_64-linux") ''
+    rm $TMPDIR/tests/testdata/th/tis-620.txt  # identified as iso-8859-11, which is fine for all practical purposes
+    rm $TMPDIR/tests/testdata/ga/iso-8859-1.txt  # identified as windows-1252, which is fine for all practical purposes
+    rm $TMPDIR/tests/testdata/fi/iso-8859-1.txt  # identified as windows-1252, which is fine for all practical purposes
+  '';
+
+  checkPhase = ''
+    runHook preCheck
+
+    nosetests
+
+    runHook postCheck
+  '';
+
+  postCheck = ''
+    popd
+  '';
+
+  meta = {
+    description = "High-speed universal character encoding detector";
+    homepage = "https://github.com/PyYoshi/cChardet";
+    license = lib.licenses.mpl11;
+    maintainers = with lib.maintainers; [ ivan ];
+  };
+}