pythonPackages.searx: fix build

The certifi package was upgraded but searx had a hard dependency on a
specific version. It still works with the new version.

Changed files
+5
pkgs
+5
pkgs/top-level/python-packages.nix
···
sha256 = "030qkrsj4as9anr8xfpk5n41qzg7w4yyjasb4cqislvyl1l1dvvs";
+
postPatch = ''
+
substituteInPlace requirements.txt \
+
--replace 'certifi==2015.11.20.1' 'certifi==2016.2.28'
+
'';
+
propagatedBuildInputs = with self; [
pyyaml lxml_3_5 grequests flaskbabel flask requests2
gevent speaklater Babel pytz dateutil pygments_2_0