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/pysnmp/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pyasn1
+, pycryptodomex
+, pysmi
+}:
+
+buildPythonPackage rec {
+  pname = "pysnmp";
+  version = "4.4.12";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1acbfvpbr45i137s00mbhh21p71ywjfw3r8z0ybcmjjqz7rbwg8c";
+  };
+
+  patches = [ ./setup.py-Fix-the-setuptools-version-check.patch ];
+
+  # NameError: name 'mibBuilder' is not defined
+  doCheck = false;
+
+  propagatedBuildInputs = [ pyasn1 pycryptodomex pysmi ];
+
+  meta = with lib; {
+    homepage = "http://snmplabs.com/pysnmp/index.html";
+    description = "A pure-Python SNMPv1/v2c/v3 library";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ primeos koral ];
+  };
+}

pkgs/development/python-modules/pysnmp/setup.py-Fix-the-setuptools-version-check.patch

@@ -0,0 +1,27 @@
+From 5f843f7c8554e2feab7f57d8718231408196fd80 Mon Sep 17 00:00:00 2001
+From: Michael Weiss <dev.primeos@gmail.com>
+Date: Fri, 1 Nov 2019 18:47:14 +0100
+Subject: [PATCH] setup.py: Fix the setuptools version check
+
+This broke the Nix build after setuptools.__version__ changed from
+"41.2.0" to "41.4.0.post20191022".
+---
+ setup.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index 0d987d5c..4f625d7c 100644
+--- a/setup.py
++++ b/setup.py
+@@ -63,7 +63,7 @@ try:
+ 
+     setup, Command = setuptools.setup, setuptools.Command
+ 
+-    observed_version = [int(x) for x in setuptools.__version__.split('.')]
++    observed_version = [int(x) for x in setuptools.__version__.split('.')[0:3]]
+     required_version = [36, 2, 0]
+ 
+     # NOTE(etingof): require fresh setuptools to build proper wheels
+-- 
+2.23.0
+