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/deal-solver/default.nix

@@ -0,0 +1,68 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, flit-core
+, z3
+, astroid
+, pytestCheckHook
+, hypothesis
+}:
+
+buildPythonPackage rec {
+  pname = "deal-solver";
+  version = "0.1.0";
+  format = "pyproject";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "life4";
+    repo = pname;
+    rev = "refs/tags/${version}";
+    hash = "sha256-eSSyLBwPc0rrfew91nLBagYDD6aJRyx0cE9YTTSODI8=";
+  };
+
+  nativeBuildInputs = [
+    flit-core
+  ];
+
+  postPatch = ''
+    # Use upstream z3 implementation
+    substituteInPlace pyproject.toml \
+      --replace "\"z3-solver\"," "" \
+      --replace "\"--cov=deal_solver\"," "" \
+      --replace "\"--cov-report=html\"," "" \
+      --replace "\"--cov-report=xml\"," "" \
+      --replace "\"--cov-report=term-missing:skip-covered\"," "" \
+      --replace "\"--cov-fail-under=100\"," ""
+  '';
+
+  propagatedBuildInputs = [
+    z3
+    astroid
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    hypothesis
+  ];
+
+  disabledTests = [
+    # z3 assertion error
+    "test_expr_asserts_ok"
+  ];
+
+  disabledTestPaths = [
+    # regex matching seems flaky on tests
+    "tests/test_stdlib/test_re.py"
+  ];
+
+  pythonImportsCheck = [ "deal_solver" ];
+
+  meta = with lib; {
+    description = "Z3-powered solver (theorem prover) for deal";
+    homepage = "https://github.com/life4/deal-solver";
+    license = licenses.mit;
+    maintainers = with maintainers; [ gador ];
+  };
+}