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/debts/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, python
+, buildPythonPackage
+, fetchFromGitLab
+, isPy27
+, jinja2
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "debts";
+  version = "0.5";
+
+  # pypi does not ship tests
+  src = fetchFromGitLab {
+    domain = "framagit.org";
+    owner = "almet";
+    repo = "debts";
+    rev = "d887bd8b340172d1c9bbcca6426529b8d1c2a241"; # no tags
+    sha256 = "1d66nka81mv9c07mki78lp5hdajqv4cq6aq2k7bh3mhkc5hwnwlg";
+  };
+
+  disabled = isPy27;
+
+  propagatedBuildInputs = [ jinja2 ];
+
+  checkInputs = [ pytest ];
+
+  # for some reason tests only work if the module is properly installed
+  checkPhase = ''
+    rm -r debts
+    export PYTHONPATH=$out/${python.sitePackages}:$PYTHONPATH
+    py.test tests
+  '';
+
+  meta = with lib; {
+    inherit (src.meta) homepage;
+    description = "A simple library and cli-tool to help you solve some debts settlement scenarios";
+    license = licenses.beerware;
+    maintainers = [ maintainers.symphorien ];
+  };
+}