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/pyverilog/default.nix

@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, jinja2
+, ply
+, verilog
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "pyverilog";
+  version = "1.3.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1a74k8r21swmfwvgv4c014y6nbcyl229fspxw89ygsgb0j83xnar";
+  };
+
+  disabled = pythonOlder "3.7";
+
+  patchPhase = ''
+    # The path to Icarus can still be overridden via an environment variable at runtime.
+    substituteInPlace pyverilog/vparser/preprocessor.py \
+      --replace "iverilog = 'iverilog'" "iverilog = '${verilog}/bin/iverilog'"
+  '';
+
+  propagatedBuildInputs = [
+    jinja2
+    ply
+    verilog
+  ];
+
+  preCheck = ''
+    substituteInPlace pytest.ini \
+      --replace "python_paths" "pythonpath"
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/PyHDI/Pyverilog";
+    description = "Python-based Hardware Design Processing Toolkit for Verilog HDL";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ trepetti ];
+  };
+}