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/cepa/default.nix

@@ -0,0 +1,32 @@
+{ lib, buildPythonPackage, fetchPypi, python, mock }:
+
+buildPythonPackage rec {
+  pname = "cepa";
+  version = "1.8.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "HcbwsyTTei7SyidGSOzo/SyWodL0QPWMDKF6/Ute3no=";
+  };
+
+  postPatch = ''
+    rm test/unit/installation.py
+    sed -i "/test.unit.installation/d" test/settings.cfg
+    # https://github.com/torproject/stem/issues/56
+    sed -i '/MOCK_VERSION/d' run_tests.py
+  '';
+
+  checkInputs = [ mock ];
+
+  checkPhase = ''
+    touch .gitignore
+    ${python.interpreter} run_tests.py -u
+  '';
+
+  meta = with lib; {
+    description = "Controller library that allows applications to interact with Tor";
+    homepage = "https://github.com/onionshare/cepa";
+    license = licenses.lgpl3Only;
+    maintainers = with maintainers; [ lourkeur ];
+  };
+}