Turns out it was already up to date and I just had a stale cache!

Seems like the community was in support of changing it, and someone went and changed it on the homepage, so we might as well stay consistent.

nginx: factor out modules into a separate file, add new "pam" module

add django-silk package

The python.buildEnv wrapper expects that all pythonPackages
have a pythonPath set, so we set to a dummy value here.

svtplay-dl: 0.20.2015.10.08 -> 0.20.2015.10.25

lxc: 1.1.3 -> 1.1.4 (security)

youtube-DL: 2015.08.28 -> 2015.10.24

fixes CVE-2015-1335

Python packages: some new ones and fixes to cairocffi

hackrf: allow on darwin

mbuffer: new package

calibre-server service: init

python: nbconvert update and new tabulate package

lightning-python: init at 1.2.1

mkvtoolnix: darwin fixes

ascii: allow build on darwin

ssdeep: only run patchelf on linux

xdg-utils: allow build on darwin

gptfdisk: darwin fixes

testdisk: darwin fixes