nixos: fix evaluation

After commit 5e468b9, evaluation failed with:

  error: undefined variable ‘dnsExtensionMechanism’ at
  .../nixpkgs/nixos/modules/config/networking.nix:177:33
This commit is contained in:
Tobias Geerinckx-Rice 2016-01-20 01:18:57 +01:00
parent 077f7ceaab
commit df29b0d23f

@ -174,7 +174,7 @@ in
'' + optionalString cfg.dnsSingleRequest ''
# only send one DNS request at a time
resolv_conf_options+=' single-request'
'' + optionalString dnsExtensionMechanism ''
'' + optionalString cfg.dnsExtensionMechanism ''
# enable extension mechanisms for DNS
resolv_conf_options+=' edns0'
'' + optionalString hasLocalResolver ''