Adding iw to systemPackages.
lighttpd: add cgit sub-service

(cgit is "a hyperfast web frontend for git repositories written in C")

cgit is enabled like this (assuming lighttpd is already enabled):

  services.lighttpd.cgit.enable = true;

and configured verbatim like this (contents of the cgitrc file):

  services.lighttpd.cgit.configText = ''
    cache-size=1000
    scan-path=/srv/git
  '';

cgit will be available from this URL: http://yourserver/cgit

In lighttpd, I've ensured that the cache dir for cgit is created if cgit
is enabled.
lighttpd: gitweb: add extraConfig option

So that we can append custom configuration text to the end of the
generated gitweb.conf file.
Merge pull request #179 from bjornfor/lighttpd-gitweb-improvements

lighttpd: gitweb: add extraConfig option
Merge pull request #178 from bjornfor/lighttpd-cgit-subservice

lighttpd: add cgit sub-service
Fixed disnix service to use systemd's dependency facilities
openvpn: fix type error

either use
- optional cond "target"
or
- optionals cond ["target1" "target2"]