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/xml2rfc/default.nix

@@ -0,0 +1,95 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, intervaltree
+, pyflakes
+, requests
+, lxml
+, google-i18n-address
+, pycountry
+, html5lib
+, six
+, kitchen
+, pypdf2
+, dict2xml
+, weasyprint
+, pyyaml
+, jinja2
+, configargparse
+, appdirs
+, decorator
+, pycairo
+, pytestCheckHook
+, python-fontconfig
+}:
+
+buildPythonPackage rec {
+  pname = "xml2rfc";
+  version = "3.12.4";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "ietf-tools";
+    repo = "xml2rfc";
+    rev = "v${version}";
+    sha256 = "sha256-TAu2Ls553t7wJ/Jhgu+Ff+H4P6az0Du8OL00JjZyCDs=";
+  };
+
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace "SHELL := /bin/bash" "SHELL := bash" \
+      --replace "test flaketest" "test" \
+      --replace "python setup.py --quiet install" ""
+    substituteInPlace setup.py \
+      --replace "'tox'," ""
+    substituteInPlace requirements.txt \
+      --replace "jinja2>=2.11,<3.0" "jinja2" \
+      --replace "markupsafe==2.0.1" "markupsafe"
+  '';
+
+  propagatedBuildInputs = [
+    intervaltree
+    jinja2
+    pyflakes
+    pyyaml
+    requests
+    lxml
+    google-i18n-address
+    pycountry
+    html5lib
+    six
+    kitchen
+    pypdf2
+    dict2xml
+    weasyprint
+    configargparse
+    appdirs
+  ];
+
+  checkInputs = [
+    decorator
+    pycairo
+    pytestCheckHook
+    python-fontconfig
+  ];
+
+   # requires Noto Serif and Roboto Mono font
+  doCheck = false;
+
+  checkPhase = ''
+    make tests-no-network
+  '';
+
+  pythonImportsCheck = [ "xml2rfc" ];
+
+  meta = with lib; {
+    description = "Tool generating IETF RFCs and drafts from XML sources";
+    homepage = "https://github.com/ietf-tools/xml2rfc";
+    # Well, parts might be considered unfree, if being strict; see:
+    # http://metadata.ftp-master.debian.org/changelogs/non-free/x/xml2rfc/xml2rfc_2.9.6-1_copyright
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ vcunat yrashk ];
+  };
+}