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/pysaml2/default.nix

@@ -0,0 +1,90 @@
+{ lib
+, buildPythonPackage
+, cryptography
+, defusedxml
+, fetchFromGitHub
+, importlib-resources
+, mock
+, pyasn1
+, pymongo
+, pyopenssl
+, pytestCheckHook
+, python-dateutil
+, pythonOlder
+, pytz
+, requests
+, responses
+, setuptools
+, six
+, substituteAll
+, xmlschema
+, xmlsec
+}:
+
+buildPythonPackage rec {
+  pname = "pysaml2";
+  version = "7.1.2";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "IdentityPython";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-nyQcQ1OO9PuuQROg+km2vIRF1sZ22MZhiHpmVXWl+is=";
+  };
+
+  propagatedBuildInputs = [
+    cryptography
+    defusedxml
+    pyopenssl
+    python-dateutil
+    pytz
+    requests
+    setuptools
+    six
+    xmlschema
+  ] ++ lib.optionals (pythonOlder "3.9") [
+    importlib-resources
+  ];
+
+  checkInputs = [
+    mock
+    pyasn1
+    pymongo
+    pytestCheckHook
+    responses
+  ];
+
+  patches = [
+    (substituteAll {
+      src = ./hardcode-xmlsec1-path.patch;
+      inherit xmlsec;
+    })
+  ];
+
+  postPatch = ''
+    # fix failing tests on systems with 32bit time_t
+    sed -i 's/2999\(-.*T\)/2029\1/g' tests/*.xml
+  '';
+
+  disabledTests = [
+    # Disabled tests try to access the network
+    "test_load_extern_incommon"
+    "test_load_remote_encoding"
+    "test_load_external"
+    "test_conf_syslog"
+  ];
+
+  pythonImportsCheck = [
+    "saml2"
+  ];
+
+  meta = with lib; {
+    description = "Python implementation of SAML Version 2 Standard";
+    homepage = "https://github.com/IdentityPython/pysaml2";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ];
+  };
+}

pkgs/development/python-modules/pysaml2/hardcode-xmlsec1-path.patch

@@ -0,0 +1,39 @@
+diff --git a/src/saml2/sigver.py b/src/saml2/sigver.py
+index 59fe2dee..0c24fbcc 100644
+--- a/src/saml2/sigver.py
++++ b/src/saml2/sigver.py
+@@ -165,33 +165,7 @@ def get_xmlsec_binary(paths=None):
+     :return: full name of the xmlsec1 binary found. If no binaries are
+         found then an exception is raised.
+     """
+-    if os.name == 'posix':
+-        bin_name = ['xmlsec1']
+-    elif os.name == 'nt':
+-        bin_name = ['xmlsec.exe', 'xmlsec1.exe']
+-    else:  # Default !?
+-        bin_name = ['xmlsec1']
+-
+-    if paths:
+-        for bname in bin_name:
+-            for path in paths:
+-                fil = os.path.join(path, bname)
+-                try:
+-                    if os.lstat(fil):
+-                        return fil
+-                except OSError:
+-                    pass
+-
+-    for path in os.environ['PATH'].split(os.pathsep):
+-        for bname in bin_name:
+-            fil = os.path.join(path, bname)
+-            try:
+-                if os.lstat(fil):
+-                    return fil
+-            except OSError:
+-                pass
+-
+-    raise SigverError('Cannot find {binary}'.format(binary=bin_name))
++    return '@xmlsec@/bin/xmlsec1'
+ 
+ 
+ def _get_xmlsec_cryptobackend(path=None, search_paths=None):